Obstetrics and Gynecology

1046 questions

Question 121Question →

Several patients present to a women's health clinic requesting initiation of a highly effective, reversible contraceptive method. Review their clinical histories and match each patient with the single most appropriate contraceptive option based on the Medical Eligibility Criteria and the patient's specific requests.

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Items

A 36-year-old woman with a history of estrogen-receptor positive breast cancer treated 3 years ago, currently in remission.
A 27-year-old woman experiencing heavy menstrual bleeding and severe dysmenorrhea, with a structurally normal uterus on ultrasound.
A 24-year-old woman with newly diagnosed, untreated chlamydial cervicitis requesting an immediate, non-invasive, self-administered method.
A 38-year-old woman who smokes a pack of cigarettes daily and has chronic hypertension, requesting a long-acting method that does not require pelvic examinations.

Matches

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Answer

Match the breast cancer patient to the Copper IUD; the patient with heavy menses to the Levonorgestrel IUD; the patient with active cervicitis to Combined oral contraceptives; and the 38-year-old hypertensive smoker to the Subdermal etonogestrel implant.
Each clinical presentation contains specific medical or historical factors that dictate safety according to the CDC/WHO Medical Eligibility Criteria (MEC). The selections made represent the safest, most effective options aligned with each patient's constraints.

Step-by-Step Solution

1
Evaluate the patient with a history of breast cancer.
Determine that all hormonal contraception is strictly contraindicated.
Breast cancer growth can be stimulated by exogenous hormones, requiring a hormone-free method like the copper IUD.
2
Evaluate the patient with heavy menstrual bleeding.
Select the levonorgestrel-releasing IUD.
The LNG-IUD significantly reduces menstrual blood loss and treats dysmenorrhea, while the copper IUD would exacerbate these symptoms.
3
Evaluate the patient with active chlamydial cervicitis.
Rule out any IUD insertion and select combined oral contraceptive pills.
IUD insertion during active cervical infection greatly increases the risk of ascending infection (pelvic inflammatory disease). COCs fulfill her request for a self-administered method.
4
Evaluate the 38-year-old smoker with hypertension who declines pelvic procedures.
Select the subdermal etonogestrel implant.
Estrogen is contraindicated due to cardiovascular risk factors (age >35, smoking, hypertension). The implant provides highly effective progestin-only contraception without requiring pelvic instrumentation.

Key Concept

Medical Eligibility Criteria (MEC) for Contraceptive Use
Estimated Time:1m 30s
Question 122Question →

A 54-year-old postmenopausal woman comes to the clinic due to a 3-month history of an itchy, flaking rash on her left nipple and areola. She states that the rash initially began as a small red patch but has gradually spread and thickened. She applied an over-the-counter hydrocortisone cream twice daily for 4 weeks with no improvement. She has no personal or family history of breast cancer. On physical examination, there is a unilateral, well-demarcated, erythematous, scaly plaque confined to the left nipple-areolar complex with small areas of superficial crusting and ulceration. The nipple appears slightly flattened. Palpation of the left breast yields no distinct masses. Axillary lymph nodes are not palpable. Bilateral diagnostic mammography reveals no abnormalities. Which of the following is the most appropriate next step in management?

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Answer: Punch biopsy of the skin lesion

Answer

Punch biopsy of the skin lesion is the most appropriate next step to diagnose suspected Paget disease of the breast.
This patient presents with a unilateral, pruritic, scaly, and crusting erythematous plaque on the nipple-areolar complex that is refractory to low-potency topical corticosteroids. This presentation is highly suspicious for Paget disease of the breast, a rare malignancy characterized by the migration of malignant glandular cells (Paget cells) through the lactiferous ducts to the nipple epidermis. The most appropriate next step in management is a full-thickness skin biopsy (such as a punch biopsy) of the affected area to establish a histopathologic diagnosis. Even with a negative mammogram and no palpable mass, biopsy is mandatory because a significant percentage of patients with Paget disease have an underlying ductal carcinoma in situ (DCIS) or invasive carcinoma that is occult on mammography.

Step-by-Step Solution

1
Identify the key clinical features
Unilateral, persistent, pruritic and scaling nipple rash in a postmenopausal woman that is refractory to topical corticosteroids.
Differentiates malignant from benign etiology.
2
Determine the most likely diagnosis
Paget disease of the breast.
The failure of empirical treatment for a unilateral eczema-like lesion points toward a neoplastic process involving the nipple epidermis.
3
Select the most appropriate diagnostic test
Punch biopsy of the affected skin.
A full-thickness skin biopsy is required to identify intraepidermal Paget cells and establish the diagnosis, regardless of mammography findings.

Key Concept

Diagnosis of Paget disease of the breast requires a full-thickness skin biopsy (e.g., punch biopsy) of the affected nipple-areolar complex, especially when conservative therapy fails.
Estimated Time:1m 30s
Question 123Question →

A 24-year-old woman comes to the office after discovering a lump in her right breast while showering 3 days ago. She has not noticed any nipple discharge, skin changes, or breast pain. Her menstrual periods occur every 28 days and last for 4 to 5 days. Her last menstrual period ended 2 weeks ago. Her medical history is unremarkable, and she takes no medications. She has no family history of breast or ovarian cancer. Vital signs are within normal limits. On physical examination, there is a 2.5-cm, firm, mobile, non-tender, well-circumscribed mass in the upper outer quadrant of the right breast. There is no overlying skin erythema, dimpling, or nipple retraction. No axillary or supraclavicular lymphadenopathy is appreciated. Which of the following is the most appropriate next step in management?

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Answer: Targeted ultrasound of the right breast

Answer

Targeted ultrasound of the right breast
The correct approach for a new palpable breast mass in a woman younger than 30 years is to perform a targeted ultrasound. Ultrasound is the preferred initial imaging modality in this age group because young women typically have dense breast tissue, which significantly decreases the sensitivity of mammography. Ultrasound can reliably differentiate between solid masses (e.g., fibroadenomas, carcinomas) and fluid-filled simple cysts. If the ultrasound confirms a benign-appearing solid mass (like a fibroadenoma), the patient may then be managed with short-term follow-up or a core needle biopsy based on patient preference and specific ultrasound features.

Step-by-Step Solution

1
Identify the patient's age and clinical presentation.
The patient is a 24-year-old female with a new, distinct, palpable breast mass.
Age is the primary determinant for the initial choice of imaging modality in the diagnostic workup of breast masses.
2
Determine the appropriate initial diagnostic modality based on age.
For women younger than 30 years, targeted ultrasound is indicated.
Younger women have denser breast tissue, which makes mammography less sensitive. Ultrasound effectively differentiates solid masses from fluid-filled cysts.
3
Rule out premature or inappropriate interventions.
Biopsy, mammography, and simple reassurance without imaging are rejected.
Imaging must precede invasive tissue sampling, mammography is reserved for older patients initially, and all new palpable masses require at least baseline imaging evaluation.

Key Concept

Age-based diagnostic pathways for palpable breast masses
Question 124Question →

Match each gynecologic surgical procedure step or scenario with the most likely clinical presentation of its associated iatrogenic complication.

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Items

Thermal injury to the ureter during transection of the cardinal ligaments
Complete ligation of the ureter during division of the infundibulopelvic ligament
Laceration of the inferior epigastric vessels during secondary laparoscopic trocar placement
Prolonged compression by self-retaining retractor blades resting on the psoas muscle

Matches

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Answer

Thermal injury matches with delayed watery vaginal discharge. Complete ureteral ligation matches with acute flank pain and hydroureteronephrosis. Inferior epigastric laceration matches with immediate abdominal mass and anemia. Retractor compression matches with knee extension weakness and anterior thigh paresthesia.
The correct pairings successfully integrate the mechanism of surgical injury with the anatomical structure involved and its expected clinical timeline. Ureteral injuries vary by mechanism: thermal spread causes delayed fistulas (incontinence), while mechanical ligation causes acute obstruction (flank pain). Vascular abdominal wall injuries present as acute hemorrhages. Neurological injuries map strictly to the dermatome and myotome of the affected nerve, with the femoral nerve uniquely vulnerable to psoas muscle compression.

Step-by-Step Solution

1
Analyze the consequences of thermal injury near the cardinal ligaments.
Associates with delayed ureteral necrosis and fistula formation.
Thermal spread causes insidious tissue ischemia. The dead tissue sloughs off 7-14 days later, creating a ureterovaginal fistula which manifests as continuous urinary incontinence without urinary tract obstruction.
2
Determine the effect of complete ureteral ligation near the infundibulopelvic ligament.
Associates with acute ureteral obstruction.
Tying off the ureter mechanically blocks urine flow instantly. This leads to rapid backup of urine (hydroureteronephrosis), capsular distension, and severe unilateral flank pain typically presenting within the first two postoperative days.
3
Evaluate the structures at risk during lateral trocar placement.
Associates with inferior epigastric vessel injury and hematoma.
Secondary trocars placed lateral to the midline risk piercing the inferior epigastric arteries. An arterial laceration causes acute, localized bleeding into the rectus sheath, leading to an expanding mass and a hemoglobin drop.
4
Assess the neurological risk of deep retractor blades on the psoas muscle.
Associates with femoral neuropathy.
The femoral nerve originates from L2-L4 and travels through the psoas muscle. Compression leads to denervation of the anterior thigh compartment (quadriceps), causing knee extension weakness and sensory loss over the anterior thigh.

Key Concept

Iatrogenic injuries during gynecologic surgery present with specific temporal patterns and physical findings dictated by the underlying pelvic anatomy.
Question 125Question →

A 28-year-old nulligravid woman comes to the clinic reporting severe, cyclic lower pelvic pain for the past 4 months. She states the pain lasts for 4 to 5 days each month and is accompanied by breast tenderness and bloating, but she has not had any vaginal bleeding during these episodes. Her last normal menstrual period was 6 months ago. Five months ago, the patient underwent a loop electrosurgical excision procedure (LEEP) for high-grade cervical intraepithelial neoplasia (CIN 3). She has a negative home pregnancy test. Her BMI is 24 kg/m224 \text{ kg/m}^2. Vital signs are within normal limits. Pelvic examination reveals normal external genitalia. Speculum examination shows a scarred, flush cervix without a visible external os. Bimanual examination reveals a symmetrically enlarged, globular, and very tender uterus. Bilateral adnexa are normal. A transvaginal ultrasound demonstrates a distended uterine cavity filled with 45 mL45 \text{ mL} of echogenic fluid. Which of the following is the most appropriate next step in management?

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Answer: Ultrasound-guided cervical dilation

Answer

Ultrasound-guided cervical dilation
The correct approach involves recognizing that the patient has developed cervical stenosis, a well-documented complication of loop electrosurgical excision procedures (LEEP). The stenosis has completely obstructed the cervical canal, preventing the egress of menstrual blood and resulting in hematometra (blood trapped in the uterine cavity). This manifests as cyclic pelvic pain (due to ongoing normal ovarian function and menstruation) without external vaginal bleeding. The transvaginal ultrasound confirming a fluid-filled cavity seals the diagnosis. The definitive management is to mechanically re-establish the outflow tract through ultrasound-guided cervical dilation and drainage.

Step-by-Step Solution

1
Analyze the patient's history and symptoms.
A young woman presents with secondary amenorrhea and severe cyclic pelvic pain following a recent LEEP procedure.
To identify the temporal relationship between a specific gynecologic surgery and the onset of new cyclic symptoms.
2
Evaluate the physical examination and imaging findings.
Exam shows a scarred cervix with no visible os, and an enlarged/tender uterus. Ultrasound shows an echogenic fluid-filled cavity.
To physically distinguish between endocrine causes of amenorrhea and mechanical outflow tract obstruction.
3
Synthesize findings to determine the underlying diagnosis.
The clinical picture strongly indicates cervical stenosis leading to hematometra (trapped menstrual blood).
LEEP is a known risk factor for cervical scarring, which physically blocks the menstrual outflow tract while the hormonal cycle remains intact.
4
Select the most appropriate management for the complication.
Mechanical opening of the tract via ultrasound-guided cervical dilation is required.
The structural obstruction must be bypassed to drain the trapped blood and alleviate the patient's pain.

Key Concept

Cervical stenosis leading to hematometra is a known complication of cervical excisional procedures (e.g., LEEP, cone biopsy). It classically presents with secondary amenorrhea, cyclic pelvic pain, and a tender, enlarged uterus. The definitive treatment is mechanical cervical dilation to allow drainage.
Estimated Time:1m 30s
Question 126Question →

Evaluate the following clinical scenarios encountered in an outpatient women's health clinic. Select the most accurate diagnosis that corresponds to each patient's specific presentation.

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Items

A 24-year-old nulliparous patient presenting with a 2-cm, firm, highly mobile, non-tender nodule; ultrasound demonstrates a well-circumscribed, solid, hypoechoic mass.
A 48-year-old perimenopausal patient presenting with cyclical bilateral breast pain and diffuse cord-like thickening that is most pronounced just prior to menstruation.
A 36-year-old patient presenting with spontaneous, bloody, unilateral nipple discharge; physical examination reveals no palpable breast masses or skin changes.
A 58-year-old postmenopausal patient presenting with a chronic, scaly, erythematous rash confined to the areola that oozes and has failed treatment with topical corticosteroids.

Matches

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Answer

The presentations match as follows: the young patient with a highly mobile solid mass has a Fibroadenoma; the perimenopausal patient with cyclical pain has Fibrocystic changes; the patient with isolated bloody nipple discharge has an Intraductal papilloma; and the postmenopausal patient with areolar eczema has Paget disease of the breast.
Each clinical vignette provides classic epidemiological and pathophysiological clues. Fibroadenomas present as mobile solid masses in younger women. Fibrocystic changes cause cyclical pain and nodularity in pre- and perimenopausal women. Intraductal papillomas cause spontaneous bloody discharge without a mass. Paget disease of the breast mimics areolar eczema in older women.

Step-by-Step Solution

1
Analyze the 24-year-old patient with a mobile solid mass.
The age and 'highly mobile' clinical characteristic point to a benign fibroadenoma.
Fibroadenomas are the most common benign breast tumors in women under 30 and typically present as well-circumscribed, mobile masses.
2
Assess the 48-year-old patient with cyclical pain and nodularity.
The timing of the pain relative to menses indicates fibrocystic changes.
Hormonal fluctuations cause these benign physiologic changes to become symptomatic, usually worsening just prior to menstruation.
3
Evaluate the 36-year-old patient with unilateral bloody discharge.
The lack of a palpable mass combined with spontaneous bloody discharge isolates intraductal papilloma as the primary suspect.
Intraductal papillomas arise from the ductal epithelium and are the most common cause of pathologic bloody nipple discharge.
4
Review the 58-year-old patient with a refractory areolar rash.
The eczematous changes refractory to topical steroids point to Paget disease of the breast.
Paget disease is characterized by malignant intraepithelial cells spreading to the nipple and areolar skin, initially mimicking eczema.

Key Concept

Differentiating benign and malignant breast pathology based on patient age, physical examination findings, and symptom cyclicity.
Question 127Question →

A 33-year-old gravid 3, para 2 woman at 38 weeks of gestation is evaluated in the labor unit. She was admitted in active labor 2 hours ago. Her past medical history is notable for a laparoscopic myomectomy three years ago that required extensive entry into the uterine cavity. She has been comfortable on continuous epidural analgesia until 10 minutes ago, when she reports the sudden onset of severe, tearing lower abdominal pain that radiates to her left shoulder. Her blood pressure is 82/4882/48 mm Hg, and her pulse is 132132/min. The tocodynamometer reveals a sudden cessation of previously regular uterine contractions. Fetal heart rate monitoring demonstrates an abrupt deceleration to 8080/min that has persisted for 4 minutes without recovery. On sterile vaginal examination, the fetal presenting part has receded from 00 station to −3-3 station. Which of the following is the most appropriate next step in management?

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Answer: Emergency laparotomy and cesarean delivery

Answer

Emergency laparotomy and cesarean delivery
The correct answer is immediate emergency laparotomy and cesarean delivery. This patient's presentation—sudden severe tearing pain, referred shoulder pain (Kehr sign from hemoperitoneum), maternal hemodynamic instability, cessation of contractions, loss of fetal station, and sudden fetal bradycardia—is highly specific for uterine rupture. Her history of a laparoscopic myomectomy with extensive entry into the uterine cavity leaves a full-thickness uterine scar, which carries a risk of rupture similar to a prior classical cesarean delivery. Once uterine rupture is clinically suspected, immediate laparotomy is mandated to deliver the fetus, control maternal hemorrhage, and repair or remove the uterus.

Step-by-Step Solution

1
Analyze the maternal vital signs and symptom onset.
The patient has acute hypotension (82/4882/48 mm Hg), tachycardia (132132/min), and severe tearing abdominal pain radiating to the shoulder.
These findings indicate hemorrhagic shock and hemoperitoneum (causing diaphragmatic irritation and referred shoulder pain).
2
Evaluate the obstetric and fetal findings in the context of the patient's medical history.
There is a sudden cessation of uterine contractions, loss of fetal station (00 to −3-3), and profound fetal bradycardia in a patient with a prior transmural myomectomy.
A prior surgery entering the uterine cavity significantly increases the risk of uterine rupture during a subsequent trial of labor.
3
Synthesize the findings to establish a diagnosis.
The combined presentation of maternal shock, loss of fetal station, and fetal distress confirms an acute uterine rupture.
The fetus and amniotic fluid have likely extruded into the maternal abdomen, stopping labor mechanics and severely compromising fetal oxygenation.
4
Determine the definitive next best step in management.
Immediate progression to emergency laparotomy and cesarean delivery is required.
Definitive surgical intervention is life-saving for both the mother and the fetus to control hemorrhage and accomplish delivery.

Key Concept

Diagnosis and management of acute uterine rupture.
Question 128Question →

A 28-year-old woman comes to the office with her partner for evaluation of an inability to conceive for the past 14 months. She has a history of irregular menstrual cycles occurring every 35 to 90 days. Her last menstrual period was 10 weeks ago. Recently, she has felt unusually fatigued and has experienced mild nausea upon awakening. She takes a daily prenatal vitamin. Blood pressure is 112/70 mm Hg112/70 \text{ mm Hg}, and pulse is 88/min88/\text{min}. BMI is 27 kg/m227 \text{ kg/m}^2. Physical examination shows mild facial acne. Pelvic examination reveals a soft, slightly enlarged globular uterus and a bluish discoloration of the cervix. Laboratory studies obtained at a health fair last week show:

Thyroid-stimulating hormone (TSH): 0.1 mU/L0.1 \text{ mU/L} (N: 0.4−4.0 mU/L0.4-4.0 \text{ mU/L})
Total thyroxine (T4): 13.5 \mug/dL13.5 \text{ \mu g/dL} (N: 5.0−12.0 \mug/dL5.0-12.0 \text{ \mu g/dL})
Prolactin: 35 ng/mL35 \text{ ng/mL} (N: <20 ng/mL< 20 \text{ ng/mL})

Which of the following is the most appropriate next step in management?

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Answer: Urine human chorionic gonadotropin testing

Answer

Urine human chorionic gonadotropin testing
The correct next step is to perform a pregnancy test. Although this patient presents with a history of subfertility and irregular cycles suggestive of polycystic ovary syndrome (PCOS), her current symptoms (fatigue, morning nausea, 10 weeks of amenorrhea) and physical examination findings (Chadwick sign, Hegar sign) strongly point to an unconfirmed pregnancy. Furthermore, early pregnancy causes normal physiologic changes in thyroid and prolactin levels. The alpha subunit of hCG is structurally identical to TSH, leading to mild stimulation of the TSH receptor and a subsequent physiologic suppression of TSH. Estrogen increases thyroid-binding globulin (TBG) production, raising total T4 levels (while free T4 remains normal). Prolactin also rises physiologically to prepare for lactation. Recognizing these physiologic adaptations is critical to avoid unnecessary or harmful interventions, making a quantitative or qualitative human chorionic gonadotropin test the definitive next step.

Step-by-Step Solution

1
Analyze the patient's clinical presentation.
The patient has 10 weeks of amenorrhea, fatigue, morning nausea, a soft/enlarged uterus (Hegar sign), and a bluish cervix (Chadwick sign).
Identifying these classical signs and symptoms strongly suggests an early, unconfirmed pregnancy, despite her initial complaint of infertility.
2
Interpret the laboratory findings in the context of the clinical presentation.
Low TSH, high total T4, and mildly elevated prolactin are identified as normal physiologic adaptations to early pregnancy.
hCG shares an alpha subunit with TSH, stimulating the thyroid and suppressing endogenous TSH. Estrogen increases thyroid-binding globulin, elevating total (but not free) T4. Prolactin naturally rises during gestation.
3
Determine the most appropriate next step in management.
Select a simple pregnancy test (urine hCG).
Confirming the pregnancy is required before any further infertility workup or interventions, preventing contraindicated treatments like radioactive scans or ovulation induction.

Key Concept

Ruling out pregnancy is the mandatory first step in evaluating secondary amenorrhea and infertility, especially when accompanying physical and laboratory findings reflect normal physiologic changes of early gestation.
Estimated Time:1m 15s
Question 129Question →

A reproductive endocrinology clinic utilizes various pharmacotherapy regimens to treat patients with anovulatory and anatomical infertility. For each clinical scenario describing a patient receiving an infertility treatment, match the appropriate intervention with its primary pathophysiological mechanism of action.

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Items

A 29-year-old with irregular menses, acne, and an ultrasound showing enlarged ovaries with peripheral cysts is prescribed the preferred first-line oral medication to induce ovulation.
A 31-year-old undergoing controlled ovarian hyperstimulation for in vitro fertilization receives an injectable medication exactly 36 hours before scheduled transvaginal oocyte retrieval.
A 33-year-old with amenorrhea, bilateral milky nipple discharge, and a pituitary microadenoma is prescribed an oral medication to restore normal ovulatory cycles.
A 34-year-old with unexplained infertility is prescribed an oral medication that historically serves as an alternative first-line agent, functioning by interacting with central receptors to induce multifollicular development.

Matches

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Answer

The clinical scenarios correspond to the mechanisms of letrozole (aromatase inhibition), hCG (LH receptor stimulation), dopamine agonists (D2 receptor agonism), and clomiphene citrate (estrogen receptor blockade), respectively.
Successful fertility treatment requires targeting the specific pathophysiological defect. Letrozole targets aromatase to reduce estrogen synthesis in PCOS. hCG acts directly on ovarian LH receptors to mimic the LH surge. Dopamine agonists directly suppress prolactin hypersecretion by stimulating D2 receptors. Clomiphene competitively blocks estrogen receptors centrally.

Step-by-Step Solution

1
Diagnose the underlying etiology of infertility for each clinical scenario.
The scenarios represent PCOS, IVF trigger timing, prolactinoma, and unexplained infertility.
Identifying the specific disease process is required to determine the appropriate pharmacological intervention.
2
Identify the standard medication prescribed for each specific diagnosis.
The indicated medications are letrozole for PCOS, hCG for the IVF trigger, cabergoline/bromocriptine for the prolactinoma, and clomiphene citrate for unexplained infertility.
Treatment guidelines dictate specific therapies based on the distinct etiology of anovulation.
3
Map each identified medication to its exact molecular or physiological mechanism of action.
Letrozole inhibits aromatase; hCG mimics LH; cabergoline agonizes dopamine receptors; clomiphene blocks estrogen receptors centrally.
Matching the drug to the mechanism confirms the correct pairing for the assessment.

Key Concept

Pharmacotherapy for ovulation induction requires targeting the specific pathophysiologic defect, utilizing mechanisms such as aromatase inhibition, estrogen receptor modulation, LH receptor agonism, or dopamine agonism.
Question 130Question →

An expectant mother at 37 weeks of gestation presents to the triage unit complaining of profound, full-body itching that has progressively worsened over the last week. The sensation is particularly unbearable at night and is concentrated on the palms of her hands and the soles of her feet. She has no prior history of dermatologic conditions, and no visible rash or lesions are observed on physical examination. Her blood pressure is 118/76 mm Hg, and her temperature is 37.1°C (98.8°F).

Laboratory results are as follows:

TestValue
Hemoglobin11.2 g/dL
Platelets185,000/mm³
Total bilirubin0.9 mg/dL
Aspartate aminotransferase (AST)92 U/L
Alanine aminotransferase (ALT)105 U/L
Alkaline phosphatase350 U/L
Total serum bile acids48 µmol/L

A continuous fetal heart rate tracing reveals a baseline of 140/min, moderate variability, and periodic shallow decreases in the heart rate that begin and end exactly symmetrically with the patient's spontaneous mild uterine contractions.

Which of the following is the most appropriate next step in the management of this patient?

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Answer: Initiate induction of labor

Answer

The most appropriate next step is to initiate induction of labor.
The correct action is to initiate induction of labor. This patient's presentation of generalized pruritus most prominent on the palms and soles, elevated liver transaminases, and elevated total serum bile acids (>10 µmol/L) is diagnostic of intrahepatic cholestasis of pregnancy (ICP). The primary risk associated with ICP is sudden intrauterine fetal demise, a risk that increases substantially as bile acid levels rise (particularly >40 µmol/L) and as pregnancy advances past 36 weeks. Therefore, standard obstetric management dictates delivery at 36-37 weeks of gestation. Because the fetal heart rate tracing is reassuring (displaying benign early decelerations due to head compression), a trial of labor via induction is the most appropriate next step.

Step-by-Step Solution

1
Interpret the clinical presentation and laboratory findings.
The patient presents with severe pruritus on the palms and soles, elevated transaminases, and elevated total serum bile acids (48 µmol/L).
These findings confirm a diagnosis of intrahepatic cholestasis of pregnancy (ICP).
2
Assess the fetal status and risk profile.
The fetus is at 37 weeks of gestation, and the maternal bile acids are severely elevated (>40 µmol/L). The fetal heart tracing shows early decelerations, which are benign.
Bile acid levels above 40 µmol/L significantly increase the risk of sudden intrauterine fetal demise, particularly in the late third trimester.
3
Determine the definitive management.
Delivery is indicated at 36-37 weeks for ICP.
Because the fetal heart rate tracing is reassuring (benign early decelerations) and the patient is at term, induction of labor is the safest and most appropriate intervention.

Key Concept

Intrahepatic cholestasis of pregnancy requires prompt delivery (typically via induction of labor) at 36-37 weeks of gestation to prevent sudden intrauterine fetal demise, especially when serum bile acids exceed 40 µmol/L.
Question 131Question →

A 3131-year-old woman comes to the clinic due to an 1818-month history of inability to conceive. She and her partner have been having regular, unprotected intercourse. Her menstrual periods, previously regular, now occur every 5050 to 6060 days. The patient also reports a 5-kg5\text{-kg} (11-lb11\text{-lb}) weight gain, sluggishness, and increased sensitivity to cold over the past year. Her BMI is 28 kg/m228\ \text{kg/m}^2. Vital signs show a temperature of 36.1∘C36.1^\circ\text{C} (97.0∘F97.0^\circ\text{F}) and a pulse of 56/min56\text{/min}. Physical examination reveals an enlarged, firm, and non-tender thyroid gland, as well as bilateral milky discharge from the nipples. A urine pregnancy test is negative.

Laboratory results:
Thyroid-stimulating hormone (TSH): 22.5 μU/mL22.5\ \mu\text{U/mL} (Normal: 0.40.4 – 4.0 μU/mL4.0\ \mu\text{U/mL})
Free thyroxine (T4): 0.5 ng/dL0.5\ \text{ng/dL} (Normal: 0.90.9 – 1.7 ng/dL1.7\ \text{ng/dL})
Prolactin: 68 ng/mL68\ \text{ng/mL} (Normal: 44 – 23 ng/mL23\ \text{ng/mL})

Which of the following is the most likely pathophysiologic mechanism responsible for this patient's infertility?

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Answer: Increased hypothalamic thyrotropin-releasing hormone secretion

Answer

Increased hypothalamic thyrotropin-releasing hormone secretion
The patient's clinical presentation (weight gain, fatigue, cold intolerance, bradycardia, goiter) and laboratory findings (high TSH, low free T4) are diagnostic of primary hypothyroidism. Primary thyroid failure results in a lack of negative feedback on the hypothalamus, leading to increased secretion of thyrotropin-releasing hormone (TRH). TRH not only stimulates thyrotrophs to release TSH but also stimulates lactotrophs in the anterior pituitary to secrete prolactin. The resulting hyperprolactinemia inhibits the pulsatile release of gonadotropin-releasing hormone (GnRH), which in turn decreases luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion, leading to anovulation, oligomenorrhea, and infertility.

Step-by-Step Solution

1
Analyze the clinical presentation and vital signs.
The patient has weight gain, fatigue, cold intolerance, bradycardia, and an enlarged thyroid gland.
These findings are classic signs of hypothyroidism, which requires laboratory confirmation.
2
Evaluate the laboratory results.
TSH is markedly elevated (22.5 μU/mL22.5\ \mu\text{U/mL}) and free T4 is decreased (0.5 ng/dL0.5\ \text{ng/dL}). Prolactin is moderately elevated (68 ng/mL68\ \text{ng/mL}).
High TSH with low T4 confirms primary hypothyroidism. The elevated prolactin links the thyroid dysfunction to her galactorrhea and infertility.
3
Connect the endocrine pathways to explain the hyperprolactinemia and infertility.
Primary hypothyroidism causes decreased T4, removing negative feedback on the hypothalamus and increasing TRH production. Elevated TRH stimulates both thyrotrophs (releasing TSH) and lactotrophs (releasing prolactin).
High prolactin inhibits the pulsatile release of GnRH, leading to decreased LH and FSH, anovulation, oligomenorrhea, and infertility.

Key Concept

Primary hypothyroidism causes hyperprolactinemia because the resulting lack of negative feedback increases TRH secretion from the hypothalamus, which directly stimulates lactotrophs to release prolactin. Hyperprolactinemia subsequently suppresses GnRH pulsatility, leading to anovulatory infertility.
Estimated Time:1m 30s
Question 132Question →

A 27-year-old woman presents to the reproductive endocrinology clinic with her partner because they have been unable to conceive for the past 15 months despite regular unprotected intercourse. She reports that her menstrual periods have been unpredictable since menarche, typically occurring only 3 or 4 times a year. Her medical history is unremarkable, and she takes no medications. Vital signs include a blood pressure of 122/78 mmHg and a body mass index (BMI) of 33 kg/m 2^2. Physical examination reveals dark, thickened, velvety plaques on the posterior neck and axillae, as well as coarse, dark hair on her upper lip, chin, and chest. Laboratory evaluation shows an elevated serum free testosterone level, a normal thyroid-stimulating hormone (TSH) level, a normal prolactin level, and a normal early morning 17-hydroxyprogesterone level. A pelvic ultrasound demonstrates bilaterally enlarged ovaries with multiple small, peripherally arranged cysts. Which of the following pathophysiologic mechanisms is the primary driver of this patient's anovulatory infertility?

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Answer: Hyperinsulinemia stimulating ovarian theca cell androgen production

Answer

The primary pathophysiologic driver is hyperinsulinemia stimulating ovarian theca cell androgen production.
The patient's clinical presentation of oligomenorrhea, hirsutism, and characteristic ultrasound findings is highly consistent with polycystic ovary syndrome (PCOS). The physical finding of acanthosis nigricans strongly points to underlying insulin resistance. In PCOS, peripheral insulin resistance causes compensatory hyperinsulinemia. Insulin stimulates ovarian theca cells to overproduce androgens (testosterone and androstenedione) and inhibits hepatic synthesis of sex hormone-binding globulin (SHBG), further increasing free circulating androgens. This hyperandrogenic environment disrupts normal follicular development and triggers anovulation, leading to infertility.

Step-by-Step Solution

1
Analyze the clinical presentation to establish a primary diagnosis.
The patient has oligomenorrhea, clinical hyperandrogenism (hirsutism), and polycystic ovaries on ultrasound, confirming Polycystic Ovary Syndrome (PCOS).
Establishing the diagnosis is required to understand the underlying pathophysiology.
2
Evaluate physical exam findings for clues to the underlying metabolic derangement.
The patient has a high BMI and acanthosis nigricans (velvety plaques on the neck), which are clinical hallmarks of severe insulin resistance.
Identifying the metabolic component links the phenotype to the correct cellular mechanism.
3
Trace the pathophysiologic cascade from the metabolic derangement to the reproductive dysfunction.
Peripheral insulin resistance leads to compensatory hyperinsulinemia. High circulating insulin stimulates ovarian theca cells to overproduce androgens.
This step directly answers the question regarding the fundamental mechanism driving the patient's anovulatory infertility.

Key Concept

In polycystic ovary syndrome (PCOS), peripheral insulin resistance leads to compensatory hyperinsulinemia, which stimulates ovarian theca cells to produce excess androgens, thereby arresting follicular development and causing anovulation.
Question 133Question →

A 19-year-old woman comes to the emergency department complaining of sudden-onset, sharp right upper quadrant abdominal pain that worsens with deep inspiration. She also reports a 5-day history of lower pelvic discomfort and spotting between her menstrual periods. She recently became sexually active with a new male partner. Her only medication is an oral contraceptive. Her temperature is 38.3°C (101.0°F), blood pressure is 112/68 mmHg, pulse is 98/min, and respirations are 18/min. Physical examination shows marked right upper quadrant tenderness without guarding or rebound. Murphy sign is negative. There is also bilateral lower quadrant tenderness. Pelvic examination reveals a mucopurulent cervical discharge and pronounced cervical motion tenderness.

Laboratory testing reveals:
TestValue
Leukocyte count12,500/mm³
Aspartate aminotransferase (AST)28 U/L
Alanine aminotransferase (ALT)24 U/L
Alkaline phosphatase65 U/L
Total bilirubin0.9 mg/dL

A urine pregnancy test is negative. Right upper quadrant ultrasound demonstrates a normal gallbladder without stones, sludge, or wall thickening.

Which of the following is the most appropriate next step in management?

Show answer & explanation

Answer: Administer intramuscular ceftriaxone, oral doxycycline, and oral metronidazole

Answer

The correct answer is to administer intramuscular ceftriaxone, oral doxycycline, and oral metronidazole.
The correct action is to administer intramuscular ceftriaxone, oral doxycycline, and oral metronidazole. This patient's presentation of fever, lower pelvic pain, cervical motion tenderness, and mucopurulent discharge is diagnostic for pelvic inflammatory disease (PID). Her concurrent pleuritic right upper quadrant pain, combined with a normal right upper quadrant ultrasound and normal liver transaminases, is classic for Fitz-Hugh-Curtis syndrome (perihepatitis). This is a well-known complication of PID caused by the ascending spread of infection (typically *Neisseria gonorrhoeae* or *Chlamydia trachomatis*) along the right paracolic gutter to the liver capsule. The diagnosis is clinical, and surgical intervention or advanced imaging is not required. Because the patient is hemodynamically stable and lacks indications for hospitalization, outpatient management is appropriate. The updated CDC guidelines mandate the addition of oral metronidazole to the standard intramuscular ceftriaxone and oral doxycycline regimen to provide enhanced anaerobic coverage.

Step-by-Step Solution

1
Analyze the clinical presentation, including the pelvic exam findings and vital signs.
The patient is a sexually active female with fever, lower abdominal pain, cervical motion tenderness, and mucopurulent discharge, which establishes the diagnosis of Pelvic Inflammatory Disease (PID).
Identifying the primary pelvic infection is necessary before explaining the right upper quadrant symptoms.
2
Evaluate the cause of the pleuritic right upper quadrant pain in the context of the laboratory and ultrasound results.
The normal right upper quadrant ultrasound and normal liver transaminases rule out acute cholecystitis and primary hepatitis. The pain is caused by Fitz-Hugh-Curtis syndrome (perihepatitis).
Fitz-Hugh-Curtis syndrome is a classic complication of PID caused by the ascending spread of infection to the liver capsule.
3
Determine the appropriate setting and pharmacological regimen based on current guidelines.
Because the patient is hemodynamically stable and tolerating oral intake, outpatient management is appropriate. The updated regimen requires intramuscular ceftriaxone, oral doxycycline, and oral metronidazole.
Guidelines mandate the addition of metronidazole to the standard ceftriaxone/doxycycline regimen to ensure adequate anaerobic coverage.

Key Concept

Fitz-Hugh-Curtis syndrome (perihepatitis) is a complication of pelvic inflammatory disease presenting with pleuritic right upper quadrant pain. It is diagnosed clinically and treated with the standard PID antimicrobial regimen (ceftriaxone, doxycycline, and metronidazole).
Question 134Question →

A 4444-year-old woman, G 33 P 33, comes to the office due to a 11-week history of continuous, involuntary watery vaginal discharge. Four weeks ago, she underwent a complicated total abdominal hysterectomy for severe endometriosis and large uterine leiomyomas. Her postoperative course was notable for right-sided back pain and a fever of 38.3∘C38.3^\circ\text{C} (101.0∘F101.0^\circ\text{F}) on postoperative day 1414. She was evaluated at an urgent care clinic where urinalysis was inconclusive, and she was advised to follow up. Her pain and fever spontaneously resolved a week later, which precisely coincided with the onset of the constant vaginal leakage. The patient notes that despite the continuous leakage, she still feels the urge to urinate and voids normally in the toilet every 33 to 44 hours. Vital signs today are within normal limits. On pelvic examination, the vaginal cuff appears well-healed with no erythema, but there is pooling of clear fluid in the vaginal vault. A tampon is placed in the vagina, and a dilute methylene blue solution is instilled directly into the bladder via a urethral catheter. Thirty minutes later, the patient is asked to walk around the clinic. The tampon is then removed and shows no blue staining. Which of the following is the most appropriate next step in evaluation?

Show answer & explanation

Answer: CT scan of the abdomen and pelvis with delayed urographic phase

Answer

CT scan of the abdomen and pelvis with delayed urographic phase
This patient's clinical presentation is highly characteristic of a ureterovaginal fistula, a known complication of extensive pelvic surgery such as a complicated hysterectomy. The classic timeline involves inadvertent ureteral injury (e.g., partial ligation or devascularization), leading to an initial period of ureteral obstruction presenting with flank pain and fever. Over 11 to 33 weeks, the ischemic tissue undergoes necrosis and forms a fistulous tract into the vaginal vault. This event relieves the ureteral obstruction (causing the back pain and fever to resolve) but initiates continuous, involuntary leakage of urine. Because only one ureter is typically affected, the contralateral intact ureter continues to deliver urine to the bladder, allowing the patient to maintain normal, voluntary voiding function alongside the continuous leakage. A retrograde dye test (instilling methylene blue into the bladder) is used to differentiate a ureterovaginal fistula from a vesicovaginal fistula. Since the tampon was not stained blue, a vesicovaginal fistula is ruled out. The next most appropriate step is to evaluate the upper urinary tract to confirm the ureterovaginal fistula and pinpoint its anatomic location. A CT scan of the abdomen and pelvis with a delayed urographic phase (CT urography) is the diagnostic test of choice.

Step-by-Step Solution

1
Interpret the clinical history.
Flank pain and fever that resolved when continuous vaginal leakage began post-hysterectomy suggests a ureteral injury that has fistulized.
Inadvertent ligation of a ureter causes upstream obstruction (hydronephrosis). Over 11 to 22 weeks, ischemic necrosis creates a fistula into the vagina, relieving the obstruction and terminating the pain, but initiating continuous leakage.
2
Analyze the voiding pattern.
The patient can still void normally despite continuous leakage.
Because only one ureter is injured, the contralateral healthy kidney continues to deliver urine to the bladder, preserving normal voiding function alongside the constant fistulous leakage.
3
Evaluate the retrograde dye test results.
Methylene blue instilled into the bladder did not stain the vaginal tampon.
This confirms the leaking fluid is not originating from the bladder, effectively ruling out a vesicovaginal fistula.
4
Determine the next best step.
The diagnosis is a ureterovaginal fistula, which requires CT urography.
To confirm the diagnosis and localize the specific anatomic defect for surgical repair, contrast-enhanced imaging of the upper urinary tract is required.

Key Concept

Diagnosis of a ureterovaginal fistula involves recognizing the classic presentation (continuous leakage with normal voiding post-pelvic surgery), ruling out a vesicovaginal fistula via a negative retrograde bladder dye test, and confirming the upper tract defect with CT urography.
Estimated Time:1m 30s
Question 135Question →

An otherwise healthy 36-year-old female patient presents to the outpatient clinic reporting a 3-week history of spontaneous, unilateral breast discharge. She notes finding small, blood-stained spots on the inside of her bra on the left side. The patient denies any localized breast pain, fever, recent trauma, or palpable lumps. Her menstrual cycles are regular, and she is currently nulliparous. She takes no daily medications and has no family history of breast cancer. On physical examination, visual inspection shows normal breast symmetry without overlying skin changes or nipple retraction. Careful palpation of all quadrants yields no discrete masses, and there is no axillary lymphadenopathy. Gentle pressure applied around the left areola produces a single drop of bloody fluid from a single duct opening. Which of the following is the most likely diagnosis?

Show answer & explanation

Answer: Intraductal papilloma

Answer

Intraductal papilloma
The correct answer is intraductal papilloma, which is a benign tumor that grows within the large lactiferous ducts of the breast beneath the areola. Because these lesions are highly vascular and fragile, they commonly present with spontaneous, unilateral, bloody or serosanguineous nipple discharge, characteristically from a single duct opening. Unless the papilloma is unusually large or located very superficially, it typically does not present with an associated palpable breast mass or overlying skin changes. The patient's presentation is the textbook description of this benign pathology.

Step-by-Step Solution

1
Analyze the patient's primary symptom.
The patient has spontaneous, unilateral, bloody discharge originating from a single duct on the left breast.
Characterizing the nature (bloody vs. milky), laterality (unilateral vs. bilateral), and spontaneity of the discharge narrows the differential diagnosis.
2
Evaluate the associated physical examination findings.
There are no palpable breast masses, skin changes (such as dimpling or erythema), or signs of trauma.
The absence of a mass helps rule out etiologies like fat necrosis or large invasive carcinomas, pointing toward a small ductal lesion.
3
Synthesize findings to identify the most likely pathology.
A solitary, bloody discharge without a mass is the classic hallmark of an intraductal papilloma.
Intraductal papillomas are benign, fragile polypoid tumors within the lactiferous ducts that easily bleed, causing the exact presentation seen in this patient.

Key Concept

Intraductal papilloma is the most common cause of spontaneous, unilateral, bloody or serosanguineous nipple discharge in the absence of a palpable breast mass.
Estimated Time:50s
Question 136Question →

A 72-year-old woman comes to the office due to a 6-month history of increasingly severe, involuntary urinary leakage. She describes the urine as "just dripping out" when she transitions from sitting to standing or when walking around her home. The patient underwent a transobturator tape procedure 12 years ago that initially resolved her symptoms, but the leakage has recurred and is now worse. She reports no dysuria, hematuria, or pelvic pain. Medical history includes hypertension, osteoporosis, and well-controlled type 2 diabetes mellitus. Body mass index is 26 kg/m226 \text{ kg/m}^2. Pelvic examination reveals a well-supported vaginal apex with no anterior or posterior vaginal wall prolapse. A cotton swab (Q-tip) test demonstrates a resting angle of 5∘5^\circ and a maximal straining angle of 15∘15^\circ from the horizontal. Urodynamic evaluation shows a Valsalva leak point pressure of 45 cm H2O45 \text{ cm H}_2\text{O} and a post-void residual volume of 20 mL20 \text{ mL}. Detrusor overactivity is absent during cystometry. Urinalysis is unremarkable. Which of the following is the most appropriate next step in management?

Show answer & explanation

Answer: Urethral bulking agent injection

Answer

Urethral bulking agent injection
The correct answer is urethral bulking agent injection. This patient has stress urinary incontinence (SUI) caused by intrinsic sphincter deficiency (ISD), characterized by continuous or positional leakage, low Valsalva leak point pressure (<60 cm H2O< 60 \text{ cm H}_2\text{O}), and a lack of urethral hypermobility. The Q-tip test angle of <30∘< 30^\circ indicates a 'fixed' or non-hypermobile urethra. Because midurethral slings require a hypermobile urethra to compress against during increased intra-abdominal pressure, they are less effective in ISD without hypermobility. Therefore, urethral bulking agents (e.g., cross-linked collagen or polyacrylamide hydrogel), which increase tissue bulk to improve mucosal coaptation, are the preferred minimally invasive intervention, especially in patients with prior failed anti-incontinence surgeries.

Step-by-Step Solution

1
Analyze the patient's symptoms and prior surgical history.
The patient presents with severe, positional urinary leakage (dribbling when transitioning to standing) after a previously successful transobturator tape procedure.
Identifies the presentation as recurrent stress urinary incontinence (SUI), prompting evaluation for the specific underlying etiology.
2
Interpret the physical examination and urodynamic findings.
The Q-tip test reveals a maximal straining angle of 15∘15^\circ (indicating no urethral hypermobility). Urodynamics show a low Valsalva leak point pressure (45 cm H2O45 \text{ cm H}_2\text{O}) with no detrusor overactivity and a normal post-void residual.
Differentiates between the two main causes of SUI: urethral hypermobility versus intrinsic sphincter deficiency (ISD). The findings definitively diagnose ISD with a 'fixed' or drainpipe urethra.
3
Select the most appropriate management based on the specific phenotype of SUI.
Urethral bulking agent injection is selected as the optimal intervention.
Because the urethra is already well-supported and fixed, creating a backboard with a standard midurethral sling will be ineffective. Bulking agents directly address the poor mucosal coaptation characteristic of ISD.

Key Concept

Intrinsic sphincter deficiency (ISD) without urethral hypermobility (Q-tip test <30∘< 30^\circ) is optimally managed with urethral bulking agents rather than standard midurethral slings, which require hypermobility to function effectively.
Question 137Question →

A physician is evaluating a 61-year-old female patient who reports a six-month history of increasingly frequent urges to urinate, often resulting in involuntary leakage before she can reach a restroom. She notes having to wake up two to three times per night to void. The patient also mentions progressive vaginal dryness and discomfort during intercourse. She has no history of fevers, hematuria, or dysuria. Her last menstrual period was 10 years ago. Her medical history includes hypertension, for which she takes amlodipine. Vital signs are within normal limits. On physical examination, the vulvar and vaginal tissues appear pale, thin, and lack normal rugation. The urethral meatus is slightly retracted. A midstream urinalysis is negative for nitrites and leukocyte esterase, with 0-1 leukocytes/hpf. Which of the following is the most appropriate next step in management?

Show answer & explanation

Answer: Topical vaginal estrogen therapy

Answer

Topical vaginal estrogen therapy
The correct answer is topical vaginal estrogen therapy. This patient's presentation of urinary frequency, urgency, and urgency incontinence, combined with vaginal dryness, dyspareunia, and pale/thinned vaginal mucosa, is characteristic of genitourinary syndrome of menopause (GSM). The bladder trigone, urethra, and vagina are embryologically derived from the urogenital sinus and contain a high concentration of estrogen receptors. Estrogen deficiency following menopause leads to thinning of these tissues, which can manifest as overactive bladder symptoms (urgency, frequency, dysuria) and vaginal atrophy. Local (topical) vaginal estrogen reverses these atrophic changes, thereby improving both the vaginal discomfort and the urinary symptoms. It is the preferred first-line therapy for women presenting with this specific constellation of findings.

Step-by-Step Solution

1
Analyze the patient's urinary symptoms.
The patient has urinary frequency, urgency, nocturia, and urgency incontinence.
Characterizing the exact type of incontinence is the first step in directing management.
2
Evaluate the associated physical examination findings.
The patient has pale, thin vaginal mucosa with loss of rugation, vaginal dryness, and dyspareunia in a postmenopausal state.
These findings are classic for genitourinary syndrome of menopause (GSM).
3
Synthesize the findings to determine the best initial management.
The urgency incontinence is secondary to urogenital atrophy (GSM). Topical vaginal estrogen is the first-line treatment to reverse these changes.
Vaginal and lower urinary tract tissues share a common embryologic origin and contain estrogen receptors. Estrogen replacement locally improves both the vaginal and urinary symptoms.

Key Concept

In postmenopausal women, genitourinary syndrome of menopause (GSM) can present with vaginal atrophy, dyspareunia, and symptoms of overactive bladder (urgency, frequency). Topical vaginal estrogen is the most appropriate first-line treatment to restore the urogenital mucosa and alleviate both vaginal and urinary symptoms.
Question 138Question →

A 35-year-old nulliparous woman is brought to the emergency department 5 days after undergoing an uncomplicated laparoscopic left ovarian cystectomy with fulguration of pelvic endometriosis. For the past 24 hours, she has experienced progressive, severe generalized abdominal pain accompanied by nausea and multiple episodes of emesis. Her temperature is 39.2°C (102.6°F), blood pressure is 86/54 mm Hg, and pulse is 128/min. She appears toxic and diaphoretic. Physical examination reveals a rigid, significantly distended abdomen with diffuse rebound tenderness and involuntary guarding. Bowel sounds are absent. Laboratory studies show a leukocyte count of 22,000/mm³ with a marked left shift. Which of the following is the most appropriate next step in management?

Show answer & explanation

Answer: Immediate exploratory laparotomy

Answer

Immediate exploratory laparotomy is required to address the intra-abdominal catastrophe.
The correct answer is immediate exploratory laparotomy. This patient is presenting with septic shock and an acute surgical abdomen 5 days after a laparoscopic procedure involving electrosurgery (fulguration). This clinical picture is highly characteristic of a delayed thermal bowel injury. Unrecognized thermal energy transfer during laparoscopy can cause localized tissue necrosis that progresses over several days, eventually leading to full-thickness bowel perforation. This typically manifests between postoperative days 4 and 10. The resulting spillage of enteric contents causes diffuse peritonitis and sepsis. In a hemodynamically unstable patient with clear signs of peritonitis, immediate surgical exploration is required for source control, washout, and bowel repair or resection.

Step-by-Step Solution

1
Analyze the patient's postoperative timeline and symptoms
The patient developed severe abdominal pain, nausea, and vomiting 5 days after a laparoscopic procedure involving electrosurgery.
To identify the onset of the complication relative to the surgical intervention, which points toward delayed presentations like thermal injury.
2
Evaluate the vital signs and physical examination findings
Findings indicate septic shock (hypotension, tachycardia, fever) and peritonitis (rigid abdomen, rebound tenderness).
To determine the patient's hemodynamic stability and the urgency of the clinical situation.
3
Synthesize the clinical picture to establish the most likely diagnosis
The combination of findings strongly suggests a delayed thermal bowel injury leading to full-thickness perforation and enteric spillage.
Unrecognized thermal damage during fulguration undergoes progressive necrosis, typically perforating between postoperative days 4 and 10.
4
Determine the most appropriate next step in management
Immediate exploratory laparotomy must be performed.
Hemodynamically unstable patients with an acute surgical abdomen require emergent surgical exploration for washout and source control.

Key Concept

Unrecognized thermal bowel injury during laparoscopy typically presents on postoperative days 4-10 with peritonitis and sepsis; hemodynamically unstable patients require immediate exploratory laparotomy.
Question 139Question →

A 7171-year-old woman comes to the office due to a 44-month history of urinary dribbling, frequent small voiding, and pelvic pressure. The patient says, 'I feel like a ball is falling out of my vagina.' She also notes occasional faint pink spotting on her underwear after wiping, which she attributes to the bulge rubbing against her clothing. She does not take any medications and has never used hormone therapy. Vital signs are within normal limits. Pelvic examination reveals a large anterior vaginal mass extending 22 cm beyond the hymenal ring with the Valsalva maneuver. The mucosal surface of the prolapsed tissue is thinned, erythematous, and has a superficial 11-cm abrasion that is oozing a minute amount of blood. Post-void residual volume is 350350 mL. Urinalysis shows trace leukocyte esterase but is negative for nitrites. Which of the following is the most appropriate initial management for this patient?

Show answer & explanation

Answer: Vaginal pessary fitting

Answer

Vaginal pessary fitting
The patient's clinical presentation is classic for an advanced anterior vaginal wall prolapse (cystocele). As the bladder descends, it can cause a sharp angle or 'kinking' of the urethra, leading to mechanical outlet obstruction. This obstruction manifests as a sensation of incomplete emptying, frequent small voids, and overflow incontinence, which is confirmed by the elevated post-void residual (PVR) volume of 350350 mL (normal is typically less than 150150 mL). Furthermore, advanced prolapse exposes the vaginal mucosa to friction, leading to thinning, erythema, and superficial erosions that cause spotting. The most appropriate initial management for symptomatic pelvic organ prolapse is conservative therapy with a vaginal pessary. A pessary will manually reduce the prolapsed tissue, relieve the mechanical obstruction of the urethra to allow proper bladder emptying, and protect the mucosal abrasion from further friction, allowing it to heal.

Step-by-Step Solution

1
Identify the primary diagnosis based on the physical examination.
The patient has a stage III anterior vaginal wall prolapse (cystocele) presenting as a mass extending beyond the hymenal ring.
The anatomical defect explains the patient's sensation of a bulge and pelvic pressure.
2
Correlate the anatomical defect with the urinary symptoms and objective findings.
The large cystocele causes urethral kinking, leading to incomplete bladder emptying (post-void residual of 350 mL) and subsequent overflow incontinence (urinary dribbling).
Understanding the mechanical nature of the urinary retention is critical to avoid inappropriate medical therapies like anticholinergics.
3
Determine the source of the vaginal spotting.
The spotting originates from a superficial abrasion on the prolapsed mucosa due to friction against clothing, rather than from the uterine cavity.
This rules out the immediate need for an endometrial biopsy.
4
Select the most appropriate initial management.
A vaginal pessary is selected to anatomically reduce the prolapse.
Conservative management with a pessary is first-line for symptomatic pelvic organ prolapse before considering surgery. It resolves the urethral kinking and protects the mucosal surface.

Key Concept

The initial management of symptomatic pelvic organ prolapse, even when complicated by overflow incontinence and mucosal erosions, is conservative reduction using a vaginal pessary.
Question 140Question →

A 38-year-old woman presents to the urogynecology clinic complaining of an 8-month history of continuous postvoid dribbling, dysuria, and pelvic pressure. She also reports deep dyspareunia. Over the past year, she has visited urgent care clinics on three separate occasions for presumed urinary tract infections; each time, she received a short course of oral antibiotics which provided temporary relief of her dysuria. Her past medical history is notable for a spontaneous vaginal delivery 44 years ago complicated by a prolonged second stage of labor. Vital signs are within normal limits. Pelvic examination reveals normal external genitalia. Speculum examination demonstrates a 33 cm, exquisitely tender, fluctuant, cystic mass located on the anterior vaginal wall. Gentle palpation of this mass expresses a small amount of purulent discharge from the urethral meatus. Urinalysis demonstrates 1515-2020 leukocytes per high-power field, positive leukocyte esterase, and negative nitrites. Which of the following is the most appropriate next step in management?

Show answer & explanation

Answer: Magnetic resonance imaging of the pelvis

Answer

Magnetic resonance imaging of the pelvis
The correct answer is magnetic resonance imaging (MRI) of the pelvis. This patient's presentation is highly suggestive of a urethral diverticulum. The classic presentation includes the '3 Ds': dysuria, dyspareunia, and dribbling (postvoid). Physical examination typically reveals a tender, cystic mass on the anterior vaginal wall, and compressing the mass may express purulent or bloody discharge from the urethral meatus. Because a urethral diverticulum is a localized outpouching of the urethral mucosa into the surrounding tissue, it acts as a reservoir that can collect urine and debris, leading to recurrent inflammation and infections. While the clinical picture strongly points toward this diagnosis, advanced imaging is required before any surgical intervention. Pelvic MRI is the modality of choice because of its high sensitivity and excellent soft-tissue contrast, which allows for precise mapping of the diverticulum's size, complexity, and relationship to the urethral sphincter. Transvaginal or transperineal ultrasound is an alternative but is generally less sensitive than MRI.

Step-by-Step Solution

1
Analyze the classic triad of symptoms and physical exam findings.
The patient presents with dyspareunia, dysuria, and postvoid dribbling (the '3 Ds'), alongside a tender anterior vaginal wall mass expressing purulence.
Identifying these pathognomonic features establishes the clinical suspicion for a urethral diverticulum rather than an uncomplicated recurrent urinary tract infection or overactive bladder.
2
Determine the appropriate diagnostic workup.
Advanced imaging is required to confirm the diagnosis and map the diverticulum's size, number, and exact location.
Careful anatomical delineation is essential to plan definitive surgical excision (diverticulectomy) and minimize the risk of severe complications such as urethrovaginal fistulas.
3
Select the best imaging modality.
Magnetic resonance imaging (MRI) of the pelvis is chosen.
MRI is the most sensitive and specific non-invasive test for diagnosing and anatomically characterizing a urethral diverticulum.

Key Concept

Urethral diverticulum frequently presents with dysuria, dyspareunia, and postvoid dribbling, alongside a palpable anterior vaginal mass; diagnosis is confirmed with pelvic MRI.
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