Group B streptococcus (GBS) colonization in pregnancy Quiz: Ace Your Exams

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A 23-year-old woman, gravida 1, para 0 at 11 weeks 3 days of gestation presents to the obstetrics clinic for a first prenatal appointment. She reports no issues so far with the pregnancy and is taking a prenatal vitamin every day. Her past medical history is significant for hypertension and migraines. Current medications include labetalol and nifedipine. Temperature is 37.0 ºC (98.6 ºF), pulse is 90/min, respiratory rate is 16/min, and blood pressure is 118/72 mmHg. On physical exam, she is well-appearing with no abnormal findings. Urine culture is performed and is negative for bacterial growth at 72 hours. She is interested in vaginal delivery if possible. Which of the following is the best next step in management?

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No further testing warranted

Vaginal-rectal culture now

Vaginal-rectal culture at 37 weeks’ gestation

Plan prepartum IV antibiotics

Plan intrapartum IV antibiotics