Obstetrics and Gynecology

Following an uncomplicated pregnancy, a healthy patient presents to the labor and delivery unit at $39$ weeks of gestation in active spontaneous labor. Over the next several hours, her cervical examination reveals progression to $8$ cm of dilation, $100\%$ effacement, and the fetal vertex at a $+1$ station. External electronic fetal monitoring demonstrates a baseline fetal heart rate of $140$/min with moderate variability. The tracing also shows symmetric, gradual decreases in the fetal heart rate that begin precisely as the uterine contractions start. The nadir of each deceleration is $115$/min and aligns exactly with the peak of the concurrent contraction. The fetal heart rate returns to baseline just as the contraction concludes. Uterine contractions are occurring every $3$ minutes. Which of the following is the most appropriate next step in management for this patient?

During an uncomplicated pregnancy, the maternal body undergoes profound systemic adaptations to support fetal development. Match each underlying physiologic mechanism with its corresponding expected maternal clinical or laboratory finding.

A primigravid patient at $12$ weeks gestation presents for an initial prenatal evaluation. She feels well aside from mild morning nausea and breast tenderness. Her medical history is unremarkable, and she takes a daily prenatal vitamin. Vital signs include a blood pressure of $110/70$ mm Hg, pulse of $84$/min, and respiratory rate of $16$/min. Cardiovascular examination reveals a regular rhythm with a grade $2/6$ systolic ejection murmur at the left upper sternal border. The lungs are clear to auscultation. The uterus is palpable just above the pubic symphysis. Initial laboratory and diagnostic evaluations are obtained. Which of the following test results in this patient most strongly indicates an underlying pathological process rather than a normal physiologic adaptation to pregnancy?

Immediately following an uncomplicated spontaneous vaginal delivery of a macrosomic neonate, a multiparous patient develops heavy, continuous vaginal bleeding. The placenta was delivered spontaneously and appears grossly intact. Her blood pressure is 95/60 mm Hg and her heart rate is 115/min. Abdominal palpation reveals a soft, boggy uterus resting above the level of the umbilicus. Speculum examination demonstrates an intact lower genital tract with no lacerations. Arrange the following management interventions in the correct sequential algorithm for this patient's complication, starting with the immediate initial response and progressing step-by-step to definitive surgical care if hemorrhage remains uncontrolled.

Match each gestational age timeline during an uncomplicated pregnancy with the most appropriate routine maternal or fetal screening test.

For each of the following complicated or atypical presentations of gynecologic infections, select the most appropriate evidence-based management strategy.

Intrapartum fetal heart rate (FHR) monitoring is essential for assessing fetal well-being during labor. Match each of the following FHR deceleration patterns or tracing abnormalities with its most likely underlying pathophysiology.

During a routine follow-up visit at the community health center, a 26-year-old G2P2 woman complains of deep pelvic pain with intercourse and a new-onset, foul-smelling vaginal discharge over the past week. Her medical history includes the insertion of a copper intrauterine device (IUD) 18 months ago. Vital signs are within normal limits except for a temperature of 38.1°C (100.6°F). On bimanual examination, there is marked tenderness upon moving the cervix and bilateral adnexal fullness with guarding, but no discrete mass is palpated. A point-of-care urine pregnancy test is negative. Which of the following is the most appropriate next step in the management of this patient's condition?

Match the following patient clinical profiles with the most appropriate contraceptive method based on the World Health Organization Medical Eligibility Criteria and specific non-contraceptive benefits.

Postpartum hemorrhage (PPH) and intrapartum hemorrhagic emergencies require rapid diagnosis and targeted management based on the underlying etiology and the patient's medical comorbidities. Match each clinical scenario of severe obstetric hemorrhage with its most appropriate pathophysiologic mechanism or corresponding management principle.

A 26-year-old woman, gravida 1 para 0, at 10 weeks gestation presents to the clinic for an initial prenatal visit. She reports feeling well, noting only mild morning nausea and bilateral breast tenderness. She describes a slight increase in clear vaginal discharge over the past few weeks but denies any pruritus, malodor, dyspareunia, or dysuria. Her temperature is 37.0°C (98.6°F), blood pressure is 112/72 mmHg, and heart rate is 78/min. Pelvic examination reveals a closed, nulliparous-appearing cervix without friability, erythema, or visible lesions. A small amount of clear, non-malodorous mucus is present in the vaginal vault. Bimanual examination shows a soft, appropriately enlarged uterus with no adnexal tenderness. Routine prenatal laboratory screening is performed. The cervical nucleic acid amplification test (NAAT) returns positive for *Chlamydia trachomatis* and negative for *Neisseria gonorrhoeae*. She has no known drug allergies. Which of the following is the most appropriate management for this patient?

A 26-year-old woman, G1P0 at 14 weeks gestation, presents to the clinic after finding a lump in her right breast. She first noticed the lump one month ago, and it has not changed in size. She reports no nipple discharge, overlying skin changes, or breast pain. Family history is notable for a maternal aunt diagnosed with breast cancer at age 52. Vital signs are within normal limits. Physical examination reveals a 3.5-cm, firm, non-tender, fixed mass in the upper outer quadrant of the right breast. A firm 1.5-cm lymph node is palpable in the right axilla. Which of the following is the most appropriate next step in management?

During an uncomplicated spontaneous vaginal delivery, the fetal head must navigate the rigid maternal bony pelvis through a predictable series of biomechanical adaptations. Consider a singleton fetus presenting in the left occipitotransverse position that progresses to a normal delivery. Arrange the following fetal cardinal movements in the correct chronological sequence, starting with the initial entry into the maternal pelvis and ending with the movements immediately following head delivery.

A medical student is reviewing acute obstetric emergencies and postpartum complications during a labor and delivery rotation. Match each of the following distinct clinical presentations with its most appropriate targeted intervention or definitive next step in management.

A 68-year-old woman is evaluated in the clinic for a follow-up appointment. Three days ago, she presented to the emergency department with acute left lower quadrant abdominal pain and was diagnosed with uncomplicated diverticulitis based on a computed tomography (CT) scan of the abdomen and pelvis. She was prescribed a course of oral antibiotics, and her abdominal pain is now significantly improving. The CT scan report, however, also noted an incidental finding of an enlarged uterus with a $15\text{ mm}$ thickened endometrial stripe. During the current visit, the patient admits to having experienced two episodes of light vaginal spotting over the past month, which she had initially dismissed. She reached menopause at age 52 and has never used hormone replacement therapy. Her body mass index is $24\text{ kg/m}^2$. Abdominal examination shows resolving mild left lower quadrant tenderness. Pelvic examination reveals a normal-appearing cervix, pale and thinned vaginal mucosa, and no palpable adnexal masses. Which of the following is the most appropriate next step in the management of this patient's gynecologic findings?

A 48-year-old woman comes to the clinic due to a 3-week history of right breast swelling, redness, and heaviness. She is not pregnant and has not lactated in over 15 years. Two weeks ago, she was evaluated at an urgent care clinic for these symptoms, diagnosed with mastitis, and prescribed a 10-day course of oral cephalexin. She completed the antibiotics, but her symptoms have progressively worsened. Her temperature is 37.1°C (98.8°F). Physical examination of the right breast reveals diffuse erythema and significant edema over 60% of the breast surface. The skin has a thickened, pitted appearance resembling an orange peel. Palpation reveals generalized firmness without a discrete, fluctuant mass. There is palpable, firm right axillary lymphadenopathy. Which of the following is the most appropriate next step in management?

An evaluation is requested for a 38-year-old G2P2 woman presenting with progressive right breast enlargement and erythema over the past three weeks. She recently completed a 10-day course of cephalexin for a presumptive diagnosis of mastitis, but her symptoms have worsened. The patient is not pregnant and last breastfed 4 years ago. She has no personal or family history of cancer. Her temperature is 37.1°C (98.8°F), blood pressure is 122/78 mm Hg, and pulse is 76/min. Physical examination reveals a globally swollen, erythematous right breast with prominent skin dimpling and thickening over the dependent portion. A 5-cm firm, ill-defined area of induration is palpated deep to the areola. A 2-cm, hard, mobile lymph node is palpable in the right axilla. Arrange the following steps in the most appropriate sequential order for the diagnostic workup and management of this patient's most likely condition.

An adolescent girl is brought to the pediatric gynecology clinic by her mother due to the absence of menarche. She is $15$ years and $6$ months old. The patient's mother expresses concern that all of her daughter's peers have already started menstruating. The patient denies cyclical abdominal cramping, pelvic pain, or any prior sexual activity. Her medical history is unremarkable, and she takes no medications. Her height is at the $5$ th percentile for her age, and her weight is at the $25$ th percentile. Vital signs are within normal limits. Physical examination reveals a broad chest with widely spaced nipples and a low posterior hairline. Tanner stage $1$ is noted for breast development, and Tanner stage $2$ for pubic hair. A normal-appearing vaginal introitus is present.

Arrange the following diagnostic and management steps in the most appropriate chronological sequence for this patient's evaluation, from initial mandatory testing to post-diagnostic screening.

A 33-year-old gravida 2, para 1 at 39 weeks of gestation is admitted to the labor suite for a trial of labor. Her obstetric history is significant for a previous low transverse cesarean delivery performed due to breech presentation. She is currently in the active phase of labor, with the cervix dilated to 6 cm and the fetal presenting part at 0 station. Her contractions are strong and occur every 3 minutes. The baseline fetal heart rate is 140/min with moderate variability and no decelerations. Thirty minutes later, the patient suddenly reports an excruciating, tearing pain in her lower abdomen that does not resolve between contractions. Her blood pressure decreases to 88/54 mmHg, and her heart rate increases to 122/min. The electronic fetal monitor reveals a sudden, prolonged deceleration to 70/min that has lasted for over 4 minutes. A repeat pelvic examination demonstrates a cervical dilation of 6 cm, but the fetal presenting part is now palpable at -3 station. Moderate dark red vaginal bleeding is noted. Which of the following is the most appropriate immediate next step in management?

During a comprehensive family planning clinic session, four patients present for contraceptive counseling. Based on the United States Medical Eligibility Criteria (US MEC) for Contraceptive Use, match each patient's clinical profile with the most appropriate contraceptive method.