OB/GYN - PRENATAL, LABOR / POSTPARTUM + GYNECOLOGY
YEAR 3 | PAGE 63C - PREGNANCY STATUS / GESTATIONAL AGE -> MATERNAL STABILITY -> FETAL STATUS -> GYNECOLOGIC
OB/GYN IS A SEQUENCING EXAM. PREGNANCY STATUS AND GESTATIONAL AGE CHANGE THE DIFFERENTIAL, SAFE TESTS, MEDICATIONS AND DELIVERY THRESHOLDS. MATERNAL STABILIZATION COMES FIRST; THEN INTEGRATE FETAL STATUS, LABOR, BLEEDING, HYPERTENSION AND GYNECOLOGIC EMERGENCIES. E. OB/GYN MANAGEMENT MAP
| Domain | Reasoning spine | Questions should force |
|---|---|---|
| Prenatal / fetal assessment | Dating -> maternal disease/medications -> screening vs diagnostic testing -> growth/placenta -> surveillance. | Why is the test being done, and what would an abnormal result change? |
| Labor / fetal monitoring | True labor? -> stage/progress -> baseline/variability -> deceleration timing -> reversible causes -> route/timing of delivery. | Do not name the tracing and stop; connect pattern to physiology and action. |
| Hypertension / bleeding | Maternal stability -> gestational age -> end-organ/fetal status -> placental/hemorrhage pattern -> delivery threshold. | Stabilize emergencies before complete diagnostic refinement. |
| Postpartum | Bleeding/4 Ts -> BP/headache -> infection -> VTE/cardiopulmonary symptoms -> lactation/mental health. | Delivery does not end risk; reassess maternal physiology and source. |
| Pelvic pain / AUB | Pregnancy test -> stability -> torsion/ectopic/hemorrhage? -> infection/structural/ovulatory causes -> imaging/biopsy/plan. | Pregnancy and instability change the algorithm before PALM-COEIN or chronic workup. |
| Prevention / reproductive health | Contraception goals/contraindications -> STI care -> infertility basics -> cervical/breast screening -> menopause/osteoporosis. | Separate screening from diagnostic workup and use current age/risk guidance. |
OB/GYN IS A SEQUENCING EXAM. PREGNANCY STATUS AND GESTATIONAL AGE CHANGE THE DIFFERENTIAL, SAFE TESTS, MEDICATIONS AND DELIVERY THRESHOLDS. MATERNAL STABILIZATION COMES FIRST; THEN INTEGRATE FETAL STATUS, LABOR, BLEEDING, HYPERTENSION AND GYNECOLOGIC EMERGENCIES. E. OB/GYN MANAGEMENT MAP — 7. Pregnancy status and gestational age are the organizing variables for OB/GYN DEEP EXPLANATION Pelvic pain, bleeding, hypertension, medication exposure, imaging choices and even normal laboratory physiology change when pregnancy is possible and as gestation
advances. Obstetric reasoning therefore begins with pregnancy context before disease labels.
WHY STUDENTS MISS IT Students sometimes jump directly to a familiar diagnosis without establishing whether the patient is pregnant or which trimester changes the pathway. EASIEST CLUE For reproductive-age pain/bleeding, ask pregnant? how far along? before the rest of the algorithm. — 8. Maternal stabilization comes before fetal reassurance or complete diagnosis DEEP EXPLANATION Hemorrhage, eclampsia/severe hypertension, sepsis, cardiopulmonary failure, rupture or other maternal instability can require immediate resuscitation while the obstetric
team determines definitive management. Fetal assessment matters, but it does not replace maternal ABCs.
WHY STUDENTS MISS IT The presence of a fetal tracing can distract learners toward fetal detail while the pregnant patient is physiologically unstable. EASIEST CLUE If the mother is unstable, stabilize the mother first; then integrate fetal status and gestational age. — 9. Fetal monitoring is physiology + contraction timing + response - not a category label DEEP EXPLANATION Baseline, variability, accelerations/decelerations and the relationship to contractions indicate fetal autonomic reserve and possible mechanisms. Correct reversible causes
when appropriate and reassess whether the pattern improves or requires escalation.
WHY STUDENTS MISS IT Students memorize early/late/variable labels but stop before answering the management question. EASIEST CLUE After naming the pattern, ask: what reversible maternal/uterine cause can I correct, and what happened after? — 10. Gynecologic pain or bleeding begins with pregnancy + stability; screening is a separate pathway DEEP EXPLANATION Ectopic pregnancy, ovarian torsion, hemorrhage and sepsis are time-sensitive and can outrank chronic AUB, fibroid or endometriosis workups. Separately, asymptomatic
screening algorithms should not be substituted for diagnostic evaluation of symptoms such as postmenopausal bleeding or a suspicious mass.
WHY STUDENTS MISS IT Students memorize early/late/variable labels but stop before answering the management question. EASIEST CLUE After naming the pattern, ask: what reversible maternal/uterine cause can I correct, and what happened after? — WHY STUDENTS MISS IT Learners may reach for PALM-COEIN or screening intervals before excluding an emergency or establishing pregnancy status. EASIEST CLUE Use the order pregnancy -> stability -> emergency threat -> syndrome workup; ask whether this is screening or diagnosis. F. SUBSTANTIVE OB/GYN RESOURCES APGO - Antepartum Care - prenatal sequencing and routine antepartum care APGO - Intrapartum Fetal Surveillance - fetal-tracing physiology and action APGO - Preeclampsia / Eclampsia - hypertensive-emergency recognition and obstetric management APGO - Ectopic Pregnancy - pregnancy-location and pelvic-pain sequencing
2026/27 clerkship-review expanded edition - align with school objectives, local protocols and current NBME/NBOME guidance