Obstetrics and Gynecology

1046 questions

Question 921Question →

While rounding on the labor and delivery unit, an attending physician evaluates a full-term pregnant woman undergoing a trial of labor after a previous low transverse cesarean section. The pregnancy has been entirely uncomplicated to date. Over the last six hours, her labor progressed normally, and the fetal head was documented at a +1+1 station. Suddenly, the patient reports a severe, tearing pain in her lower abdomen that persists between contractions. On physical examination, the fetal presenting part is now palpated at a −2-2 station. The continuous fetal heart rate monitor, which previously showed a category I tracing, now demonstrates a sustained fetal heart rate of 8080 beats per minute lasting for over four minutes. Vaginal bleeding is scant, but the patient's heart rate has increased to 115115 beats per minute and her blood pressure is 90/5590/55 mmHg. Which of the following is the most appropriate next step in the management of this patient?

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Answer: Emergent laparotomy and cesarean delivery

Answer

Emergent laparotomy and cesarean delivery
The correct answer addresses the immediate life-threatening nature of a uterine rupture. The patient's presentation—sudden tearing pain, loss of fetal station, maternal shock, and fetal bradycardia during a trial of labor after cesarean—is pathognomonic. The definitive treatment is emergent laparotomy to deliver the fetus, control bleeding, and repair (or remove) the ruptured uterus.

Step-by-Step Solution

1
Evaluate the patient's sudden onset of symptoms during a trial of labor after cesarean (TOLAC).
The acute tearing pain and regression of fetal station from +1+1 to −2-2 strongly suggest that the prior uterine scar has separated.
Loss of fetal station is a highly specific physical examination finding for uterine rupture, as the fetus extrudes through the defect into the abdominal cavity.
2
Analyze the maternal and fetal vital signs in the context of the physical exam.
The sustained fetal bradycardia (8080 beats per minute) indicates severe fetal hypoxemia due to placental detachment. The maternal tachycardia and hypotension indicate significant internal hemorrhage.
Uterine rupture involves tearing of highly vascular tissue, leading to rapid blood pooling in the abdomen even if vaginal bleeding is minimal.
3
Determine the definitive next step in management.
The clinical picture dictates immediate surgical intervention.
Once a symptomatic uterine rupture occurs, the only way to arrest maternal hemorrhage and salvage the fetus is through an emergent laparotomy and cesarean delivery.

Key Concept

Diagnosis and acute management of uterine rupture
Question 922Question →

During a routine follow-up appointment, a 68-year-old female reports a recent onset of bothersome urinary leakage. Over the past month, she has experienced frequent episodes where a sudden, intense desire to pass urine is immediately followed by incontinence. Additionally, she reports an increase in nighttime awakenings to void. Her past medical history includes poorly controlled type 2 diabetes mellitus, essential hypertension, and painful peripheral neuropathy. Medication adjustments one month ago included the addition of amitriptyline. Current vital signs are within normal limits. On physical examination, there is mild suprapubic fullness but no identifiable anterior or posterior vaginal wall defects. The Q-tip test demonstrates a maximum straining angle of 15∘15^\circ from the horizontal. Bedside bladder ultrasonography demonstrates a residual volume of 410 mL immediately after the patient voluntarily voids. Dipstick urinalysis shows no abnormalities. Which of the following is the most appropriate next step in the care of this patient?

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Answer: Discontinuation of the tricyclic antidepressant

Answer

Discontinuation of the tricyclic antidepressant
The correct answer identifies that the patient is suffering from overflow incontinence secondary to detrusor underactivity. Although she describes symptoms mimicking urgency urinary incontinence (sudden desire to pass urine), the objective finding of a post-void residual (PVR) volume of 410 mL indicates severe urinary retention. Normal PVR is typically less than 50 to 100 mL. This retention is highly likely an adverse effect of her recently prescribed amitriptyline, a tricyclic antidepressant with strong anticholinergic properties that block parasympathetic input to the detrusor muscle, thereby preventing adequate bladder contraction. The most appropriate initial step in management is to discontinue the offending medication.

Step-by-Step Solution

1
Analyze the patient's presenting symptoms and objective data.
The patient reports urgency and frequency, but objective testing reveals a post-void residual (PVR) of 410 mL and a normal Q-tip test.
Subjective symptoms of urgency can occur in multiple incontinence subtypes; integrating objective data like PVR and urethral mobility is necessary to differentiate the exact etiology.
2
Identify the primary mechanism of incontinence.
A PVR greater than 150-200 mL confirms urinary retention with overflow incontinence, rather than pure urgency incontinence (which typically has a normal PVR).
When the bladder becomes overdistended, small amounts of urine frequently leak out, and the patient may feel a constant or sudden urge to void despite an inability to empty.
3
Determine the underlying etiology based on the patient's history.
The patient recently started amitriptyline for diabetic neuropathy, a medication with potent anticholinergic side effects.
Anticholinergic medications inhibit parasympathetic stimulation of the detrusor muscle, impairing bladder contraction and leading to acute urinary retention, especially in patients with underlying risks like diabetic cystopathy.
4
Select the most appropriate management.
Cessation of the recently started amitriptyline.
The primary intervention for iatrogenic overflow incontinence is discontinuing the offending pharmacologic agent.

Key Concept

Overflow incontinence can paradoxically present with urgency and frequency symptoms; diagnosis requires identifying an elevated post-void residual volume, and initial management involves stopping offending anticholinergic medications.
Question 923Question →

A 28-year-old nulliparous woman is evaluated in the hospital for persistent abdominal pain. Two days ago, she was admitted with severe bilateral lower abdominal pain, a temperature of 39.2∘C39.2^\circ\text{C} (102.6∘F102.6^\circ\text{F}), and purulent cervical discharge. At that time, pelvic examination revealed extreme cervical motion tenderness and a palpable, tender fullness in the left adnexa. A transvaginal ultrasound demonstrated a 6 cm6\text{ cm} complex, multiloculated cystic mass in the left adnexa with thick walls and internal debris. She was diagnosed with a tubo-ovarian abscess and immediately started on intravenous cefoxitin and doxycycline.

Today (48 hours48\text{ hours} after admission), she reports her left lower quadrant pain has progressively worsened. Her temperature is 39.0∘C39.0^\circ\text{C} (102.2∘F102.2^\circ\text{F}), blood pressure is 112/72 mm Hg112/72\text{ mm Hg}, and pulse is 114 /min114\text{ /min}. Abdominal examination shows hypoactive bowel sounds and significant left lower quadrant tenderness with guarding, but no rebound tenderness. Her leukocyte count has increased from 16,500 /mm316,500\text{ /mm}^3 on admission to 21,000 /mm321,000\text{ /mm}^3 today. Which of the following is the most appropriate next step in management?

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Answer: Ultrasound-guided percutaneous drainage of the adnexal mass

Answer

The most appropriate next step is ultrasound-guided percutaneous drainage of the adnexal mass.
The correct answer identifies that a tubo-ovarian abscess unresponsive to 48-72 hours of appropriate intravenous antibiotics requires minimally invasive drainage. The patient's worsening pain, persistent high fever, and rising leukocytosis clearly indicate medical failure, necessitating immediate source control to prevent frank rupture.

Step-by-Step Solution

1
Evaluate the initial diagnosis and management.
The patient was correctly diagnosed with a tubo-ovarian abscess (TOA) and started on a guideline-concordant regimen of intravenous cefoxitin and doxycycline.
First-line management for a hemodynamically stable patient with an unruptured TOA less than 7-9 cm is hospitalization and intravenous broad-spectrum antibiotics.
2
Assess the patient's clinical trajectory over the standard observation period.
After 48 hours of medical therapy, the patient exhibits persistent high fever, worsening localized pain, and an increasing leukocyte count.
Patients receiving medical management for TOA must be closely monitored; lack of clinical improvement or frank deterioration within 48 to 72 hours defines medical failure.
3
Determine the appropriate intervention for a medically refractory TOA.
The patient requires physical source control of the abscess. Given her hemodynamic stability, minimally invasive drainage (ultrasound-guided percutaneous or laparoscopic) is preferred over exploratory laparotomy.
Drainage removes the infected fluid collection that antibiotics cannot fully penetrate, preventing life-threatening abscess rupture while preserving the adnexal structures in a nulliparous patient.

Key Concept

Management of a tubo-ovarian abscess (TOA) that fails to improve after 48-72 hours of broad-spectrum intravenous antibiotics requires prompt procedural intervention, ideally through minimally invasive image-guided or laparoscopic drainage.
Question 924Question →

An active 71-year-old woman is evaluated in the clinic to discuss surgical intervention for severe pelvic organ prolapse. She has a history of five vaginal deliveries. Over the past year, she has experienced a bothersome vaginal bulge and a sensation of pelvic heaviness that worsens after prolonged standing. She occasionally has to apply manual pressure to her perineum to initiate voiding. Two months ago, a trial of conservative management with a vaginal ring pessary was attempted but was discontinued because the patient experienced recurrent dislodgment and discomfort. She currently denies any involuntary leakage of urine with coughing, laughing, or physical exertion. Vital signs are within normal limits. Body mass index is 28 kg/m228 \text{ kg/m}^2. Pelvic examination in the supine position reveals an anterior vaginal wall prolapse that descends 4 cm4 \text{ cm} beyond the hymen during the Valsalva maneuver. The apical and posterior vaginal compartments are well supported. Post-void residual volume is 45 mL45 \text{ mL}. The patient is eager to proceed with surgical repair. Which of the following is the most appropriate next step in the management of this patient?

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Answer: Urodynamic evaluation with temporary reduction of the prolapse

Answer

Urodynamic evaluation with temporary reduction of the prolapse
The correct answer is Urodynamic evaluation with temporary reduction of the prolapse. This patient presents with severe anterior vaginal wall prolapse and is planning definitive surgical repair. Although she currently has no symptoms of stress urinary incontinence (SUI), a large prolapse can kink the urethra, thereby artificially increasing urethral resistance and maintaining continence. This mechanical phenomenon can mask underlying SUI, leading to a condition known as occult stress urinary incontinence. When the prolapse is surgically corrected (e.g., via anterior colporrhaphy), the urethra is straightened, urethral resistance drops, and the patient may develop de novo SUI postoperatively. To prevent this highly distressing complication, patients with severe prolapse planning surgical correction should undergo a cough stress test or urodynamic evaluation while the prolapse is temporarily reduced (e.g., using a pessary or large cotton swabs in the office). If occult SUI is objectively demonstrated during this reduction, the patient can then be offered a concurrent anti-incontinence procedure, such as a midurethral sling, at the time of the prolapse repair.

Step-by-Step Solution

1
Identify the primary clinical problem and surgical plan.
The patient has symptomatic, severe anterior vaginal wall prolapse (cystocele) that has failed conservative management, and she is planning surgical repair.
Establishes the need for appropriate preoperative evaluation and risk assessment.
2
Assess the patient's current urinary symptoms in relation to her anatomy.
She denies any symptoms of stress urinary incontinence (SUI), but requires manual splinting to void due to mechanical obstruction by the severe prolapse.
Highlights the absence of overt SUI symptoms while confirming anatomical distortion.
3
Apply knowledge of pelvic floor pathophysiology to severe prolapse.
Severe anterior prolapse can kink the urethra, artificially increasing urethral resistance and masking underlying SUI (a condition known as occult SUI).
Connects the severe anatomical prolapse to the potential for hidden urinary incontinence.
4
Determine the necessary preoperative diagnostic workup.
A cough stress test or urodynamic evaluation must be performed with the prolapse temporarily reduced (e.g., via a pessary or large swab) to unmask potential SUI before surgery.
Ensures that if occult SUI is present, a concurrent anti-incontinence procedure can be safely planned and offered to the patient.

Key Concept

Patients with severe pelvic organ prolapse should undergo evaluation for occult stress urinary incontinence (via temporary prolapse reduction) prior to surgical repair to prevent de novo postoperative incontinence.
Question 925Question →

A 3232-year-old parous woman presents for evaluation of a 99-month history of absent menstruation. She previously experienced regular 3030-day menstrual cycles. Her obstetric history is notable for a difficult vaginal delivery three years ago that was complicated by postpartum hemorrhage and required emergent uterine curettage. She denies hot flashes, visual disturbances, or galactorrhea. Her BMI is 21 kg/m221 \text{ kg/m}^2. Based on standard diagnostic algorithms for secondary amenorrhea, arrange the following management steps in the correct chronological sequence to definitively confirm her suspected diagnosis. Assume all preliminary laboratory results and withdrawal tests yield non-diagnostic or negative results (e.g., normal hormone levels or absence of withdrawal bleeding), thereby necessitating progression to the next step down the diagnostic pathway.

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Answer

The correct sequence begins with ruling out pregnancy, followed by initial endocrine labs, a progestin challenge, an estrogen-progestin challenge, and finally direct visualization via hysteroscopy.
The evaluation of secondary amenorrhea follows a strict stepwise logical progression to isolate the disrupted tier of the hypothalamic-pituitary-ovarian-uterine axis. After excluding pregnancy (the most common etiology overall), baseline endocrine studies are obtained. If normal, clinicians use targeted hormonal challenges. The progestin challenge evaluates for sufficient endogenous estrogen. If negative, an estrogen-progestin challenge evaluates the integrity of the endometrium and outflow tract. A negative response to both strongly indicates an anatomical defect, triggering surgical evaluation.

Step-by-Step Solution

1
Rule out pregnancy
Perform a serum β\beta-hCG assay.
Pregnancy is the most common cause of secondary amenorrhea and must be definitively excluded before any other diagnostic tests or hormonal challenges are administered.
2
Evaluate basal endocrine function
Measure serum FSH, TSH, and prolactin.
These tests identify common systemic and endocrine causes of amenorrhea, including central hypothyroidism, hyperprolactinemia, and primary ovarian insufficiency.
3
Assess endogenous estrogen and outflow tract patency
Administer an oral progestin challenge.
If basal labs are normal, providing a progestin will induce withdrawal bleeding only if the patient has adequate endogenous estrogen and an intact, responsive endometrium.
4
Differentiate hypoestrogenism from an anatomical defect
Administer sequential estrogen and progestin.
If the progestin challenge fails, exogenous estrogen followed by progestin will build up and shed the lining unless there is severe physical scarring (synechiae) preventing endometrial proliferation.
5
Confirm anatomical etiology directly
Perform hysteroscopy.
Failure to bleed after the estrogen-progestin challenge confirms target organ failure (Asherman syndrome in this context), making direct visualization and potential treatment the final definitive step.

Key Concept

Algorithm for the evaluation of secondary amenorrhea, specifically isolating anatomical etiologies like Asherman syndrome through sequential withdrawal testing.
Estimated Time:2m 0s
Question 926Question →

A 72-year-old multiparous woman presents to the urogynecology clinic with a sensation of pelvic pressure and a vaginal bulge. Examination reveals stage III anterior vaginal wall prolapse. After discussing treatment options, she elects for conservative management with a vaginal pessary. The physician prepares to fit the patient for a ring pessary with support. Arrange the following steps of the pessary fitting and management process in the correct chronological order, from the initial evaluation to the final discharge instructions.

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Answer

The correct sequence is: comprehensive pelvic examination, insertion with static fit check, dynamic retention testing, and patient education/follow-up planning.
Pessary fitting is a sequential clinical procedure. It begins with a comprehensive pelvic examination to assess the patient's anatomy and select the correct device size. Next, the pessary is inserted, and a static fit is confirmed by ensuring an examining finger can easily pass between the device and the vaginal wall. Once the static fit is deemed safe, dynamic testing (standing, walking, and Valsalva maneuver) is performed to ensure the device does not dislodge during normal physiological stresses. Finally, the visit concludes with educating the patient on maintenance (removal and reinsertion) or scheduling frequent follow-up visits to prevent long-term complications like vaginal erosion or ulceration.

Step-by-Step Solution

1
Determine the initial prerequisite step for fitting a device.
A comprehensive pelvic examination (Item 1).
The clinician must evaluate the vaginal dimensions and prolapse characteristics to select the appropriate pessary type and size.
2
Determine the first step after device selection.
Insertion and static fit confirmation (Item 2).
The clinician inserts the device and ensures an examining finger can sweep around the pessary, confirming it is not too tight against the vaginal mucosa.
3
Identify the functional testing step.
Dynamic retention testing (Item 3).
The patient must perform physiological stresses (standing, walking, Valsalva) to ensure the device remains properly seated and provides relief without dislodging.
4
Identify the final management step prior to discharge.
Patient education and care planning (Item 4).
To prevent serious complications like fistulas or erosions, a strict maintenance regimen (self-care or provider-led) must be agreed upon.

Key Concept

Clinical sequence of vaginal pessary fitting and management
Question 927Question →

A 62-year-old woman comes to the office reporting a three-week history of breast tenderness, abdominal bloating, and intermittent vaginal spotting. She underwent menopause at age 51 and has not experienced any vaginal bleeding until now. Her past medical history is notable for well-controlled hypertension. She takes amlodipine and has no history of hormone replacement therapy. Vital signs are within normal limits. Pelvic examination reveals a parous cervix with a small amount of dark blood in the vaginal vault. Bimanual examination is notable for a slightly enlarged, mobile uterus and a palpable, firm, 9-cm mass in the left adnexa. Transvaginal ultrasound demonstrates a 9.5-cm complex, solid and cystic left ovarian mass and an endometrial stripe thickness of 16 mm. A urine pregnancy test is negative. Which of the following is the most appropriate next step in the evaluation of this patient?

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Answer: Endometrial biopsy

Answer

Endometrial biopsy
The correct answer is endometrial biopsy. This patient presents with a classic constellation of symptoms for an estrogen-secreting granulosa cell tumor of the ovary. Granulosa cell tumors are malignant sex cord-stromal tumors that autonomously produce excess estrogen. In a postmenopausal woman, this unregulated estrogen stimulation causes endometrial proliferation, presenting as a markedly thickened endometrial stripe and postmenopausal bleeding. Because 5% to 10% of these patients will have a concurrent endometrial carcinoma (and up to 50% will have endometrial hyperplasia), it is mandatory to perform an office endometrial biopsy. Establishing the presence or absence of endometrial cancer is a critical preliminary step, as a diagnosis of uterine malignancy dictates a more extensive surgical staging procedure (e.g., total extrafascial hysterectomy, bilateral salpingo-oophorectomy, and comprehensive lymph node dissection) than the ovarian mass might require on its own.

Step-by-Step Solution

1
Identify the patient's key clinical presentation
Postmenopausal bleeding, breast tenderness, a 9.5-cm complex ovarian mass, and a 16-mm thickened endometrial stripe.
Synthesizing these findings points toward a specific etiology.
2
Correlate the symptoms with potential ovarian pathology
The triad of a solid/cystic ovarian mass, signs of hyperestrogenism (breast tenderness), and postmenopausal bleeding is highly characteristic of a granulosa cell tumor.
Granulosa cell tumors are sex cord-stromal tumors that secrete large amounts of estrogen.
3
Determine the most critical immediate diagnostic intervention
Tissue diagnosis of the thickened endometrium via endometrial biopsy is mandatory.
Up to 50% of patients with granulosa cell tumors have concurrent endometrial hyperplasia, and 5-10% have endometrial carcinoma. Diagnosing a concurrent uterine malignancy is essential before planning surgical intervention for the ovarian mass.

Key Concept

Patients with suspected estrogen-secreting ovarian tumors (e.g., granulosa cell tumors) who present with postmenopausal bleeding and a thickened endometrium must undergo an endometrial biopsy to rule out concurrent endometrial carcinoma before surgical staging.
Estimated Time:1m 30s
Question 928Question →

Emergency medical services bring a 58-year-old woman to the hospital after she experienced a sudden onset of severe lower abdominal pain and a sensation of a "bulge" in her vagina. The symptoms began abruptly one hour ago while she was straining to pass stool. Four weeks prior to presentation, she underwent a total laparoscopic hysterectomy for recurrent, heavy uterine bleeding. Her temperature is 37.1°C (98.8°F), blood pressure is 118/76 mm Hg, pulse is 102/min, and respirations are 18/min. On physical examination, the lower abdomen is tender to palpation. Pelvic examination demonstrates a separation at the vaginal apex. A hyperemic segment of small bowel is visible protruding through the defect into the vaginal canal. Which of the following is the most appropriate next step in the management of this patient?

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Answer: Immediate surgical exploration and repair

Answer

The most appropriate next step in management is immediate surgical exploration and repair.
The correct answer is immediate surgical exploration and repair. Vaginal cuff dehiscence is a known, severe complication following a hysterectomy. When accompanied by evisceration (the protrusion of intra-abdominal contents, usually small bowel, through the vaginal defect), it constitutes an acute surgical emergency. The prolapsed bowel is highly susceptible to strangulation, ischemia, and necrosis if not promptly managed. The patient must be taken directly to the operating room where the bowel can be carefully inspected for viability, repaired or resected if damaged, and returned to the peritoneal cavity before the vaginal defect is securely closed.

Step-by-Step Solution

1
Identify the complication from the patient's history and physical examination.
The patient has a separated vaginal apex with small bowel protruding into the vagina 4 weeks after a total laparoscopic hysterectomy.
This confirms a definitive clinical diagnosis of vaginal cuff dehiscence complicated by bowel evisceration.
2
Determine the severity and risks associated with the diagnosed complication.
Exposed bowel is at high risk for strangulation, ischemia, necrosis, and massive intra-abdominal infection.
Understanding the high risk of rapid bowel ischemia dictates the urgency of the necessary intervention.
3
Select the most appropriate management based on the clinical urgency.
The patient must be taken directly to the operating room without delay.
Definitive surgical exploration is required to visually inspect the bowel for viability, perform any needed bowel resection, and repair the anatomical vaginal cuff defect.

Key Concept

Vaginal cuff dehiscence with bowel evisceration is a life-threatening surgical emergency requiring immediate operative exploration to evaluate bowel viability and repair the defect.
Estimated Time:1m 0s
Question 929Question →

A 26-year-old woman is referred to the emergency department by her university health clinic due to a 3-day history of escalating pelvic pain and high fever. Upon arrival, her temperature is 39.3°C (102.7°F), heart rate is 112/min, and blood pressure is 108/65 mmHg. Speculum examination demonstrates copious, yellow-green cervical exudate. Bimanual examination elicits exquisite pain on cervical manipulation and identifies a boggy, 8-cm mass in the right adnexal region. Arrange the following clinical steps in the most appropriate chronological sequence for managing this patient's condition.

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Answer

The correct sequence is: rapid urine pregnancy test, transvaginal ultrasound, inpatient intravenous antibiotics, percutaneous drainage for failure to improve, and transition to a 14-day outpatient oral antibiotic course.
The correct sequence for a patient presenting with symptoms of a tubo-ovarian abscess (TOA) begins with ruling out an ectopic pregnancy using a rapid urine beta-hCG test. Following this, transvaginal ultrasonography is the preferred modality to confirm the presence and size of the adnexal mass. Once a TOA is diagnosed, the patient must be admitted for inpatient management with broad-spectrum intravenous antibiotics (e.g., cefoxitin and doxycycline). If the patient fails to defervesce or improve clinically after 48 to 72 hours, image-guided percutaneous drainage is indicated. Finally, upon clinical stability, the patient is discharged to complete a full 14-day course of oral antibiotics.

Step-by-Step Solution

1
Rule out pregnancy
Excludes ectopic pregnancy and prevents teratogenic medication exposure.
All women of reproductive age presenting with lower abdominal pain must have pregnancy ruled out immediately.
2
Perform diagnostic imaging
Visualizes the 8-cm adnexal mass.
Once pregnancy is excluded, imaging is required to confirm the presence of a tubo-ovarian abscess and assess its size.
3
Initiate medical management
Provides broad-spectrum coverage for PID/TOA.
Patients with a TOA require hospitalization and parenteral antibiotics to cover N. gonorrhoeae, C. trachomatis, and anaerobes.
4
Escalate to procedural intervention
Evacuates the purulent collection.
If clinical parameters (fever, pain, leukocytosis) do not improve after 48-72 hours of IV antibiotics, surgical or radiologic drainage is indicated.
5
Plan discharge therapy
Completes the antimicrobial course.
After clinical improvement and/or drainage, the patient must complete a total of 14 days of therapy to fully eradicate the infection and prevent sequelae.

Key Concept

The management of complicated pelvic inflammatory disease (tubo-ovarian abscess) follows a specific sequence: exclude pregnancy, confirm via imaging, initiate inpatient IV antibiotics, drain if refractory, and complete a 14-day oral course.
Question 930Question →

A 55-year-old woman is evaluated on postoperative day 1 following an anterior colporrhaphy and a vaginal hysterectomy for pelvic organ prolapse. She reports lower abdominal discomfort and a strong urge to urinate, but she is unable to pass urine despite multiple attempts over the last six hours. Her vital signs are stable. Physical examination reveals a palpable, tender, suprapubic mass. Arrange the following steps in the most appropriate chronological order for managing this patient's suspected postoperative urinary retention.

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Answer

The correct sequence is to first confirm the volume with a bladder ultrasound, immediately perform catheterization for relief, maintain the catheter for 24-48 hours for bladder rest, and finally conduct an active voiding trial.
Postoperative urinary retention is a common and highly uncomfortable complication following pelvic reconstructive surgery and vaginal hysterectomy. The standard management sequence begins with a non-invasive bladder ultrasound to rapidly confirm the diagnosis and measure the retained volume without introducing infection risk. Once confirmed, the immediate priority is to decompress the bladder via urethral catheterization to relieve pain and prevent ischemic damage to the bladder wall. Because the bladder has been acutely overdistended, it requires a period of 'bladder rest'—typically managed by leaving an indwelling catheter in place for 24 to 48 hours. Finally, after this recovery period, an active voiding trial is performed to ensure the patient can void spontaneously and adequately empty her bladder before catheter use is discontinued permanently.

Step-by-Step Solution

1
Measure post-void residual volume
A bladder ultrasound confirms a high volume of retained urine.
To non-invasively confirm the diagnosis of postoperative urinary retention before initiating invasive interventions.
2
Perform urethral catheterization
Urine is drained, providing immediate symptomatic relief.
To decompress the bladder, alleviate pain, and prevent acute kidney injury or permanent detrusor injury from overdistension.
3
Allow for bladder rest
An indwelling Foley catheter is maintained for 24-48 hours.
To allow the detrusor muscle to recover from surgical trauma, anesthesia effects, and the acute overdistension event.
4
Perform a voiding trial
The catheter is removed and the patient's spontaneous voiding is evaluated.
To determine if the transient postoperative retention has resolved and normal bladder function has returned.

Key Concept

Management of Postoperative Urinary Retention
Question 931Question →

An obstetrician is called to the labor unit to evaluate a fetal heart rate tracing for a 28-year-old patient. The patient is a gravida 3, para 2 at 4040 weeks gestation. She was admitted 44 hours ago in spontaneous labor and was subsequently started on an intravenous oxytocin infusion for labor augmentation due to a secondary arrest of dilation. Her temperature is 37.0∘C37.0^\circ\text{C} (98.6∘F98.6^\circ\text{F}), blood pressure is 115/75 mmHg115/75\text{ mmHg}, and pulse is 88/min88/\text{min}. The tocodynamometer demonstrates 77 uterine contractions in a 1010-minute period. The fetal heart rate tracing reveals a baseline of 135/min135/\text{min}, minimal variability, and visually apparent, gradual decreases in the fetal heart rate that begin after the peak of each contraction and return to baseline after the contraction ends. Which of the following is the most appropriate next step in the management of this patient?

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Answer: Discontinuation of the oxytocin infusion

Answer

Discontinuation of the oxytocin infusion
The patient is experiencing uterine tachysystole, defined as more than 55 contractions in a 1010-minute period. This excessive uterine activity limits the relaxation time between contractions, decreasing blood flow to the intervillous space and causing uteroplacental insufficiency. This is reflected on the fetal heart rate tracing as late decelerations, which are characterized by a gradual decrease in the fetal heart rate that begins after the peak of the contraction. The most appropriate initial step in intrauterine resuscitation for oxytocin-induced tachysystole is the immediate discontinuation of the oxytocin infusion. Additional resuscitative measures may include maternal repositioning, intravenous fluid bolus, and supplemental oxygen administration.

Step-by-Step Solution

1
Analyze the fetal heart rate (FHR) tracing.
The FHR shows late decelerations (gradual decreases starting after the contraction peak) with minimal variability.
Identifying the type of deceleration determines the underlying pathophysiology, which in this case is uteroplacental insufficiency.
2
Evaluate the uterine contraction pattern.
The tocodynamometer shows 7 contractions in a 10-minute period.
Normal labor has 5 or fewer contractions in 10 minutes. More than 5 indicates uterine tachysystole.
3
Determine the cause of the late decelerations and the appropriate intervention.
The tachysystole is likely driven by the oxytocin infusion, leading to compromised blood flow to the intervillous space and subsequent fetal hypoxia.
To restore uteroplacental blood flow, the immediate next step must address the tachysystole by stopping the offending agent.

Key Concept

Management of uterine tachysystole with late fetal heart rate decelerations requires immediate intrauterine resuscitation, starting with the discontinuation of uterotonic agents like oxytocin.
Question 932Question →

A 28-year-old woman, gravida 1, para 1, comes to the office 3 weeks after a difficult vaginal delivery. Her delivery was complicated by a prolonged second stage of labor and required forceps assistance. For the past 5 days, she has experienced a continuous leakage of clear fluid from her vagina. She has no dysuria, fever, abdominal pain, or fecal incontinence. Her voiding frequency is normal, but she feels constantly damp and must wear a sanitary pad at all times. Physical examination shows normal vital signs. The abdomen is soft and non-tender. A cotton swab test reveals a straining angle of 25∘25^\circ (normal is <30∘<30^\circ). Speculum examination reveals a small pool of clear fluid in the posterior vaginal fornix. The fluid has a slight ammonia-like odor. Which of the following is the most appropriate next step in diagnosis?

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Answer: Retrograde instillation of methylene blue into the bladder

Answer

The most appropriate next step is the retrograde instillation of methylene blue into the bladder.
The correct action is to perform a bladder dye test (retrograde instillation of methylene blue). This patient's presentation of continuous leakage of clear fluid from the vagina following a prolonged, difficult, and instrument-assisted labor is highly suspicious for a vesicovaginal fistula. During prolonged labor, the bladder can be compressed between the fetal head and the maternal pubic symphysis, leading to ischemic necrosis of the vesicovaginal septum. The necrotic tissue sloughs off over several days to weeks, forming a fistula between the bladder and the vagina. A bladder dye test involves instilling a visible dye (such as methylene blue or indigo carmine) into the bladder via a catheter. If a vesicovaginal fistula is present, the dye will be observed leaking into the vaginal canal, confirming the diagnosis.

Step-by-Step Solution

1
Analyze the patient's symptoms and examination findings.
The patient has continuous, rather than episodic, leakage of clear, ammonia-smelling fluid pooling in the vaginal vault.
Identifying the pattern of leakage (continuous vs. stress-induced vs. urge-induced) is the most critical first step in determining the etiology of urinary incontinence.
2
Correlate the symptoms with the patient's obstetric history.
The patient had a prolonged second stage of labor requiring operative forceps delivery, which is a major risk factor for ischemic necrosis of the vesicovaginal septum.
Prolonged compression of the maternal bladder between the fetal head and the pubic symphysis leads to tissue necrosis and subsequent fistula formation, typically presenting days to weeks postpartum.
3
Select the appropriate diagnostic intervention for the suspected condition.
A bladder dye test using retrograde instillation of methylene blue is the indicated next step.
Instilling dye into the bladder allows direct visualization of a vesicovaginal fistula. If a fistula is present, the blue dye will leak directly into the vaginal canal.

Key Concept

Continuous urinary leakage pooling in the vagina following a prolonged or obstructed labor strongly suggests a vesicovaginal fistula, which is diagnosed using a bladder dye test (instillation of methylene blue) or cystourethroscopy.
Question 933Question →

A 4848-year-old multiparous woman presents to the clinic complaining of heavy, irregular vaginal bleeding, foul-smelling discharge, and deep pelvic pain for the past 33 months. She has not seen a physician in over a decade. Pelvic examination reveals a 66-cm friable, exophytic mass replacing the cervix. Rectovaginal examination demonstrates nodularity and induration extending into the medial aspect of the right parametrium, but not to the pelvic sidewall. Arrange the following steps in the most appropriate sequence for the diagnosis, staging, and definitive management of this patient's condition.

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Answer

The optimal sequence is: Cervical biopsy, followed by PET/CT staging, external beam radiation with concurrent chemotherapy, intracavitary brachytherapy, and finally long-term clinical surveillance.
The patient's presentation of a large cervical mass with parametrial involvement is highly suspicious for locally advanced cervical cancer (Clinical Stage IIB). The initial step is always to secure a tissue diagnosis via biopsy of the visible lesion. Once confirmed, clinical staging with advanced imaging (PET/CT) is required to evaluate nodal status and distant spread. Because the disease extends into the parametrium, primary surgery is contraindicated. Definitive management consists of concurrent chemoradiation therapy, which typically involves whole-pelvic external beam radiation paired with cisplatin, followed by localized intracavitary brachytherapy to maximize tumor destruction. Finally, patients enter a strict post-treatment clinical surveillance program.

Step-by-Step Solution

1
Diagnose via tissue biopsy
Histologically confirms invasive cervical carcinoma.
All oncologic treatment pathways require definitive tissue confirmation prior to extensive radiologic staging or intervention.
2
Stage via advanced imaging (PET/CT)
Evaluates the extent of disease, specifically focusing on pelvic and para-aortic lymph node spread and distant metastasis.
Clinical examination identified parametrial involvement (Stage IIB). Radiologic staging is necessary to define the required radiation treatment fields.
3
Treat with external beam radiation and chemotherapy (EBRT + Cisplatin)
Provides targeted regional therapy with systemic radiosensitization.
Parametrial involvement makes the patient a poor candidate for primary surgical resection (radical hysterectomy). Concurrent chemoradiation is the definitive standard of care.
4
Boost therapy with brachytherapy
Delivers a maximum, targeted radiation dose to the primary tumor bed.
Supplementing external beam radiation with intracavitary brachytherapy improves local control rates while sparing adjacent healthy pelvic organs (bladder and rectum).
5
Perform ongoing clinical surveillance
Monitors the patient for clinical remission, treatment complications, or disease recurrence.
Regular follow-up detects early signs of recurrent disease that might be amenable to targeted salvage therapies (e.g., pelvic exenteration).

Key Concept

The diagnostic and management pathway for locally advanced cervical cancer (Stage IB3 and higher) requires establishing a tissue diagnosis, radiologic staging via PET/CT, and definitive chemoradiation therapy rather than primary surgical resection.
Question 934Question →

Identify the most likely diagnosis for each of the following third-trimester obstetric presentations.

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Items

A 33-year-old at 37 weeks gestation with severe preeclampsia presents with sudden, constant abdominal pain, dark red vaginal bleeding, and a rigid, hypertonic uterus.
A 28-year-old at 35 weeks gestation presents with an episode of painless, bright red vaginal bleeding. Her vital signs are stable, and the fetal heart tracing is reassuring.
A 35-year-old at 38 weeks gestation undergoing a trial of labor after a previous cesarean delivery suddenly experiences intense lower abdominal pain, loss of fetal station, and fetal bradycardia.
A 30-year-old at 39 weeks gestation with a known velamentous umbilical cord insertion experiences a gush of blood and abrupt fetal bradycardia immediately following artificial rupture of membranes.

Matches

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Answer

The vignettes describe placental abruption, placenta previa, uterine rupture, and vasa previa, respectively.
Each obstetric complication has a distinct clinical presentation. Placental abruption presents with painful bleeding and a rigid uterus. Placenta previa presents with painless bleeding. Uterine rupture presents with severe pain, loss of fetal station, and fetal distress in a patient with a prior uterine scar. Vasa previa presents with painless bleeding and immediate profound fetal distress upon rupture of membranes.

Step-by-Step Solution

1
Analyze the first presentation: pain, dark bleeding, and a rigid uterus in a patient with preeclampsia.
This indicates placental abruption.
Hypertension is a major risk factor, and the clinical triad is classic for premature placental separation.
2
Analyze the second presentation: painless, bright red bleeding with stable vitals and reassuring fetal status.
This indicates placenta previa.
Placenta previa classically presents as painless third-trimester bleeding without uterine tenderness.
3
Analyze the third presentation: trial of labor after cesarean, intense pain, loss of station, and fetal bradycardia.
This indicates uterine rupture.
A prior uterine scar is the main risk factor, and loss of fetal station is a pathognomonic sign of full-thickness uterine rupture.
4
Analyze the fourth presentation: bleeding and fetal bradycardia immediately after rupture of membranes with velamentous cord insertion.
This indicates vasa previa.
Vasa previa rupture occurs when fetal vessels crossing the membranes are torn during amniotomy or spontaneous rupture, leading to rapid fetal exsanguination.

Key Concept

Differentiation of third-trimester bleeding and intrapartum emergencies based on maternal pain, fetal heart rate changes, and specific risk factors.
Question 935Question →

A 15-year-old girl is brought to the clinic by her mother for evaluation of absent menstrual periods. She has never menstruated. Physical examination reveals a height at the 5th percentile for age, Tanner stage 1 breast development, and normal-appearing female external genitalia with a patent vagina. A urine pregnancy test is negative. Arrange the following diagnostic and management actions in the most appropriate sequential order according to the standard algorithmic approach for primary amenorrhea.

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Answer

The correct sequence is: Pelvic ultrasonography, followed by Serum FSH measurement, followed by Karyotype analysis, followed by Transthoracic echocardiogram, and finally Initiation of estrogen therapy.
The standard diagnostic ladder for primary amenorrhea begins with a physical exam and ultrasound to verify the presence of a uterus. If a uterus is present but breast development is absent, the patient is hypoestrogenic, prompting FSH measurement. Elevated FSH signifies primary ovarian insufficiency. In a short-statured teenager, this is highly suspicious for Turner syndrome, prompting a karyotype. Once Turner syndrome is confirmed, cardiovascular screening (echocardiogram) is mandatory before establishing long-term care. Finally, hormone replacement (estrogen) is initiated to induce puberty and prevent osteoporosis.

Step-by-Step Solution

1
Pelvic ultrasonography
Confirms the presence of normal internal Müllerian structures.
In any patient presenting with primary amenorrhea, establishing the anatomical presence of a uterus is the foundational step before initiating biochemical workup, ruling out Müllerian agenesis or androgen insensitivity syndrome.
2
Serum FSH measurement
Differentiates central from peripheral etiology based on estrogen deficiency.
Because the patient has Tanner stage 1 breast development, she lacks endogenous estrogen. FSH distinguishes between ovarian failure (high FSH) and a hypothalamic/pituitary defect (low/normal FSH).
3
Karyotype analysis
Provides the definitive genetic diagnosis of gonadal dysgenesis.
Assuming hypergonadotropic hypogonadism (elevated FSH) given the clinical presentation of short stature, a karyotype is required to diagnose Turner syndrome (45,X) and determine if Y chromosome material is present (which would necessitate gonadectomy).
4
Transthoracic echocardiogram
Screens for critical, life-threatening congenital heart defects.
All patients newly diagnosed with Turner syndrome must undergo comprehensive cardiovascular screening, as aortic root dilation, bicuspid aortic valve, and aortic coarctation are a major source of morbidity and mortality.
5
Estrogen therapy initiation
Induces secondary sexual characteristics and protects bone health.
Once the diagnosis is secured and associated risks are evaluated, the long-term management of hypergonadotropic hypogonadism involves estrogen replacement to mimic natural puberty, followed eventually by progestin to protect the endometrium.

Key Concept

The algorithmic evaluation of primary amenorrhea requires establishing anatomy (ultrasound) followed by biochemical axis testing (FSH), and finally genetic testing (karyotype) for hypergonadotropic states prior to initiating long-term management.
Question 936Question →

Evaluate the following clinical and laboratory profiles of patients presenting with amenorrhea. Match each profile to the most likely underlying diagnosis.

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Items

16-year-old phenotypic female with primary amenorrhea, Tanner stage V breast development, and absent pubic hair. Pelvic ultrasound reveals an absent uterus. Laboratory studies show male-range testosterone, normal FSH, and elevated LH.
17-year-old phenotypic female with primary amenorrhea and absent breast development. Blood pressure is 155/95 mmHg. Pelvic ultrasound reveals a prepubertal uterus. Laboratory studies show profound hypokalemia, elevated FSH, and elevated LH.
28-year-old female with secondary amenorrhea and galactorrhea. She had a massive postpartum hemorrhage 18 months ago but successfully breastfed her infant for 8 months. Laboratory studies show low FSH, low LH, elevated prolactin, and elevated TSH.
15-year-old phenotypic female with primary amenorrhea and absent breast development. Blood pressure is 110/70 mmHg. Karyotype is 46,XY. Pelvic ultrasound reveals a small uterus. Laboratory studies show elevated FSH, elevated LH, and low female-range testosterone.

Matches

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Answer

Profile 1 matches Complete androgen insensitivity syndrome. Profile 2 matches 17-alpha-hydroxylase deficiency. Profile 3 matches Primary hypothyroidism. Profile 4 matches Swyer syndrome.
Each profile highlights a distinct pathophysiologic mechanism of amenorrhea. Profile 1's androgen resistance causes an absent uterus (due to active AMH) with male testosterone. Profile 2's enzyme deficiency shifts adrenal synthesis toward mineralocorticoids, causing hypertension alongside hypogonadism. Profile 3 demonstrates primary hypothyroidism, where elevated TRH stimulates prolactin, which in turn inhibits GnRH; prior lactation explicitly rules out pituitary necrosis. Profile 4 shows a failure of testicular differentiation (Swyer syndrome), resulting in a lack of both AMH (allowing uterus formation) and testosterone, leading to hypergonadotropic hypogonadism.

Step-by-Step Solution

1
Analyze the first clinical profile focusing on the absent uterus and male-range testosterone.
The profile is identified as a 46,XY disorder of sex development where testes are present (producing AMH to regress the uterus) but peripheral tissues do not respond to androgens.
This uniquely describes complete androgen insensitivity syndrome.
2
Evaluate the second profile's combination of primary amenorrhea, hypertension, and hypokalemia.
The hypertension and hypokalemia reflect mineralocorticoid excess, while the primary amenorrhea reflects absent sex steroids.
This specific enzymatic block identifies 17-alpha-hydroxylase deficiency.
3
Examine the third profile, noting the high TSH and prolactin levels, and carefully evaluate the postpartum hemorrhage history.
The ability to breastfeed rules out ischemic necrosis of the pituitary. The laboratory profile demonstrates TRH-induced hyperprolactinemia.
This correctly identifies primary hypothyroidism as the cause of the secondary amenorrhea.
4
Assess the fourth profile's 46,XY karyotype in the presence of a uterus and hypergonadotropic hypogonadism.
The presence of a uterus confirms no AMH was produced, meaning testes never formed. Streak gonads produce no hormones, leading to high FSH/LH.
This presentation defines Swyer syndrome (46,XY complete gonadal dysgenesis).

Key Concept

Integration of karyotype, Mullerian anatomy, and distinct hormone panels (gonadotropins, sex steroids, TSH, and mineralocorticoids) is required to differentiate complex etiologies of amenorrhea.
Question 937Question →

Match each clinical presentation of urinary incontinence with its most appropriate next step in management.

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Items

Involuntary urine loss triggered by physical exertion or Valsalva maneuvers; patient has already maximized pelvic floor physical therapy.
Involuntary leakage accompanied by a sudden, compelling desire to void; detrusor overactivity is suspected.
Continuous dribbling of urine associated with a distended, palpable bladder and a postvoid residual volume of 600 mL in a patient with uncontrolled diabetes.
Constant pooling of clear fluid in the vaginal vault noted several days following extensive pelvic surgery for endometriosis.

Matches

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Answer

The presentations map to their distinct etiologies: exertional leakage matches midurethral sling; urgency leakage matches bladder relaxant medication; continuous dribbling with high postvoid residual matches intermittent self-catheterization; and constant fluid pooling post-surgery matches surgical fistula repair.
Correct management of urinary incontinence requires identifying the underlying mechanism. Stress incontinence arises from urethral hypermobility and is surgically treated with a midurethral sling once conservative measures fail. Urgency incontinence stems from detrusor overactivity and responds to bladder relaxants. Overflow incontinence results from impaired contractility (e.g., diabetic neuropathy), causing high residual volumes that must be drained via catheterization. Vesicovaginal fistulae are anatomic tracts forming after surgery, necessitating surgical repair.

Step-by-Step Solution

1
Analyze the presentation involving exertional leakage after failed physical therapy.
Identify as stress urinary incontinence.
To select a definitive surgical option, which is a midurethral sling.
2
Evaluate the presentation with a compelling desire to void and leakage.
Identify as urgency urinary incontinence.
To determine the need for pharmacotherapy targeting detrusor overactivity.
3
Assess the presentation featuring continuous dribbling and a postvoid residual of 600 mL.
Identify as overflow incontinence.
To recognize neurogenic detrusor underactivity requiring bladder decompression via catheterization.
4
Examine the presentation of constant clear fluid pooling following pelvic surgery.
Identify as a vesicovaginal fistula.
To choose surgical repair for the resulting anatomic defect.

Key Concept

Differentiation of urinary incontinence types and their targeted management algorithms based on underlying pathophysiology.
Question 938Question →

Following a routine well-woman examination, a 52-year-old nulligravid patient is asked to return to the clinic to discuss her cervical cytology results. She transitioned through menopause at age 50 and denies any postmenopausal bleeding, pelvic pressure, or abnormal vaginal discharge. Her current health is excellent with no chronic medical conditions, and she takes no medications. Pelvic examination demonstrates normal external genitalia, a parous-appearing cervix without gross lesions, and a small, mobile uterus without adnexal masses. The cytology report notes the presence of atypical glandular cells (AGC). A concurrent high-risk human papillomavirus (HPV) test is negative. Which of the following is the most appropriate next step in the diagnostic evaluation?

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Answer: Colposcopy, endocervical sampling, and endometrial biopsy

Answer

The most appropriate next step is to perform colposcopy, endocervical sampling, and endometrial biopsy concurrently.
The finding of atypical glandular cells (AGC) on cervical cytology is concerning because it is associated with a high risk of significant pathology, including cervical adenocarcinoma in situ, invasive cervical adenocarcinoma, and endometrial adenocarcinoma. Because the glandular cells could originate from either the cervix or the uterus, standard guidelines require comprehensive evaluation. For all women aged 35 years and older with AGC (as well as younger women with risk factors for endometrial cancer, such as obesity or chronic anovulation), the required next step is a combination of colposcopy, endocervical sampling, and endometrial biopsy. This triad ensures that all potential anatomic sources of the abnormal cells are histologically evaluated.

Step-by-Step Solution

1
Analyze the cervical cytology result.
The Pap test shows Atypical Glandular Cells (AGC), which is a high-risk finding.
Unlike squamous cell abnormalities, AGC has a higher positive predictive value for underlying premalignancy or malignancy (such as cervical adenocarcinoma in situ, invasive cervical adenocarcinoma, or endometrial adenocarcinoma).
2
Determine the required diagnostic procedures based on the patient's age and risk factors.
The patient is 52 years old. Guidelines mandate that all women ≥\geq 35 years of age with AGC undergo evaluation of the endometrium in addition to the cervix and endocervix.
The source of the atypical glandular cells can be the endocervical canal or the endometrial cavity. Age ≥\geq 35 is a primary risk factor for endometrial cancer.
3
Synthesize the management plan.
The patient must undergo colposcopy (to evaluate the ectocervix), endocervical sampling (to evaluate the endocervical canal), and an endometrial biopsy (to evaluate the endometrium).
This triad of tests ensures comprehensive sampling of all potential anatomic sources for the atypical glandular cells, preventing a missed diagnosis of occult adenocarcinoma.

Key Concept

Management of Atypical Glandular Cells (AGC) on cervical cytology
Estimated Time:1m 15s
Question 939Question →

Match each patient's clinical presentation with the most accurate diagnosis and guideline-concordant management step.

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Items

A 32-year-old woman with profuse, purulent vaginal discharge, intense vaginal erythema, and dyspareunia. Vaginal pH is 5.5. Microscopy reveals numerous parabasal cells and >10 leukocytes per high-power field, but no clue cells, yeast, or motile organisms.
A 28-year-old woman with thick, white vaginal discharge and severe pruritus. Wet mount shows budding yeast. She has had four similar, culture-confirmed episodes in the past 12 months.
A 24-year-old woman with bilateral lower abdominal pain, cervical motion tenderness, and fever. She has a levonorgestrel intrauterine device (IUD) placed 3 years ago. Pelvic ultrasound shows no adnexal masses.
A 21-year-old woman with malodorous, frothy discharge and punctate cervical hemorrhages. Microscopy shows flagellated, motile organisms. She completed a 7-day course of metronidazole two weeks ago; her sole partner was also treated concurrently.

Matches

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Answer

Match the patient with parabasal cells to Desquamative inflammatory vaginitis; the patient with 4+ yeast episodes to Recurrent candidiasis; the IUD patient to Pelvic inflammatory disease (leaving IUD in place); and the patient who failed initial therapy to Refractory trichomoniasis.
Each pair correctly links a complex or atypical presentation of a gynecologic infection with its most appropriate, evidence-based management strategy.

Step-by-Step Solution

1
Analyze each clinical vignette to identify distinguishing signs, chronicity, and microscopic findings.
Identified parabasal cells (DIV), recurrent yeast infections (RVVC), PID complicated by IUD presence, and Trichomonas treatment failure.
Accurate extraction of key clinical data differentiates standard infections from complex or refractory cases.
2
Determine the optimal, guideline-concordant management for each specifically identified condition.
DIV requires topical anti-inflammatory or clindamycin therapy; RVVC requires a 6-month maintenance regimen; PID with an IUD does not require immediate IUD removal; refractory trichomoniasis requires high-dose nitroimidazole therapy.
Management of atypical or complex gynecologic infections depends heavily on specific clinical contexts and recent treatment history rather than empiric standard therapy.

Key Concept

The management of complex gynecologic infections requires synthesizing wet mount findings (e.g., parabasal cells in DIV), recognizing chronicity (RVVC and refractory trichomoniasis), and applying specific guidelines for foreign bodies like an IUD during active infection.
Question 940Question →

Match each of the following clinical presentations of patients experiencing secondary amenorrhea or oligomenorrhea with the primary pathophysiological mechanism responsible for their reproductive endocrine dysfunction.

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Items

Patient with a BMI of 17.2 kg/m² presenting with a recent metatarsal stress fracture and 6 months of absent menses. Laboratory evaluation shows low serum estradiol and unmeasurable luteinizing hormone.
Patient with recent onset of severe dyspareunia, vasomotor symptoms, and cessation of menses at age 33. Laboratory testing reveals elevated follicle-stimulating hormone and decreased anti-Müllerian hormone.
Patient treated with risperidone for a psychiatric condition presenting with bilateral galactorrhea and secondary amenorrhea. Thyroid-stimulating hormone is normal, and pregnancy test is negative.
Patient with irregular menses every 45-90 days, recalcitrant cystic acne, and a normal body mass index. Pelvic examination is unremarkable, but serum free testosterone is elevated.

Matches

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Answer

The low-BMI patient matches with hypothalamic suppression; the patient with elevated FSH and low AMH matches with accelerated follicular depletion; the patient taking risperidone matches with pharmacological dopamine antagonism; and the normoweight patient with hyperandrogenism matches with altered gonadotropin secretion and intrinsic ovarian hyperandrogenemia.
Each clinical presentation describes a distinct etiology of reproductive dysfunction requiring specific pathophysiological correlation. Functional hypothalamic amenorrhea is driven by central energy deficits suppressing GnRH. Primary ovarian insufficiency is a peripheral failure caused by premature follicular depletion. Medication-induced hyperprolactinemia results from dopamine receptor blockade. Polycystic ovary syndrome represents an intrinsic disorder of ovarian androgen production and altered pituitary gonadotropin ratios.

Step-by-Step Solution

1
Analyze the patient with low BMI and a stress fracture.
Identify functional hypothalamic amenorrhea (FHA), matching with suppression of pulsatile GnRH release.
Relative energy deficiency causes the hypothalamus to decrease GnRH pulsatility, leading to low gonadotropins and hypoestrogenism (causing bone loss).
2
Evaluate the 33-year-old patient with dyspareunia, vasomotor symptoms, and high FSH.
Identify primary ovarian insufficiency (POI), matching with accelerated depletion of functional ovarian follicles.
Loss of ovarian follicles decreases estrogen and inhibin B production, removing negative feedback and driving FSH levels upward.
3
Assess the patient taking risperidone who developed galactorrhea.
Identify medication-induced hyperprolactinemia, matching with pharmacological antagonism of dopamine receptors.
Antipsychotics block dopamine D2 receptors on lactotrophs, lifting the normal inhibition of prolactin secretion and causing secondary hypogonadism.
4
Examine the patient with acne, oligomenorrhea, and elevated testosterone despite a normal BMI.
Identify lean-phenotype polycystic ovary syndrome (PCOS), matching with altered gonadotropin secretion and intrinsic hyperandrogenemia.
PCOS is fundamentally an endocrine disorder of androgen excess and ovulatory dysfunction, which can occur independently of obesity.

Key Concept

Differential diagnosis and pathophysiology of secondary amenorrhea and oligomenorrhea.
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