USMLE® Step 2 CK · chapter OB

Obstetrics: USMLE® Step 2 CK topics

19 topics. Each one opens a review page with its guideline basis and key clinical sections, then links the QuestionBank questions, ChartWalk flowchart, FlashCards and ImageBank plates that share its code.

1. Antepartum hemorrhage & placental disorders

   OB-HEM-0151 questions · Review Book p. 410 · ACOG/SMFM Obstetric Care Consensus No. 7: Placenta Accreta Spectrum (2018)

2. Antepartum surveillance, growth restriction & fluid disorders

   OB-SURV-0115 questions · Review Book p. 401 · 2021 ACOG Practice Bulletin 229 (Antepartum Fetal Surveillance); 2021 ACOG Practice Bulletin 227 (Fetal Growth Restriction); SMFM Consult 52 (2020)

3. Arrest disorders & abnormal labor progress

   OB-LD-027 questions · Review Book p. 417 · 2024 ACOG Clinical Practice Guideline No. 8 (Labor Management)

4. Ectopic pregnancy — diagnosis & management

   OB-ECT-0130 questions · Review Book p. 397 · 2018 ACOG Practice Bulletin 193 Tubal Ectopic Pregnancy

5. Fetal heart rate monitoring interpretation

   OB-FHR-0111 questions · Review Book p. 413 · NICHD 2008 three-tier system

6. Gestational diabetes — screening & management

   OB-GDM-0121 questions · Review Book p. 406 · 2026 ADA Standards of Care in Diabetes, Management of Diabetes in Pregnancy

7. Gestational trophoblastic disease

   OB-GTD-0114 questions · Review Book p. 400 · ACOG Practice Bulletin 53 — Gestational Trophoblastic Disease

8. Hypertensive disorders of pregnancy — preeclampsia to HELLP

   OB-HTN-0149 questions · Review Book p. 403 · 2020 ACOG Practice Bulletin 222, Gestational Hypertension and Preeclampsia (reaffirmed 2026)

9. Intrapartum & peripartum obstetric emergencies

   OB-EMER-0125 questions · Review Book p. 420 · RCOG Green-top Guideline No. 42: Shoulder Dystocia (2026)

10. Malpresentation, operative delivery & TOLAC/VBAC

    OB-LD-0324 questions · Review Book p. 418 · 2020 ACOG Practice Bulletin 221 (External Cephalic Version); 2019 ACOG Practice Bulletin 205 (TOLAC/VBAC)

11. Medication safety & teratogens in pregnancy

    OB-MED-0115 questions · Review Book p. 395 · 2014 FDA Pregnancy and Lactation Labeling Rule

12. Normal labor & delivery, induction & group B streptococcus (GBS) prophylaxis

    OB-LD-0129 questions · Review Book p. 415 · 2024 ACOG Clinical Practice Guideline No. 8 (Labor Management); 2020 ACOG Committee Opinion 797 Prevention of Group B Streptococcal Disease

13. Other medical & structural complications of pregnancy

    OB-MISC-0162 questions · Review Book p. 407 · 2018 ACOG Nausea and Vomiting of Pregnancy

14. Postpartum complications, mood disorders & contraception

    OB-PP-0115 questions · Review Book p. 424 · CDC U.S. Medical Eligibility Criteria for Contraceptive Use (2024)

15. Postpartum hemorrhage — etiology & stepwise management

    OB-PPH-0111 questions · Review Book p. 422 · 2017 ACOG Practice Bulletin 183, Postpartum Hemorrhage; 2025 WHO Consolidated Guidelines for the Prevention, Diagnosis and Treatment of Postpartum Haemorrhage

16. Prenatal care — visit schedule & routine assessments

    OB-PRE-0114 questions · Review Book p. 392

17. Prenatal screening, labs & Rh alloimmunization

    OB-PRE-0240 questions · Review Book p. 393 · 2020 ACOG Prenatal Genetic Screening; 2017 ACOG Practice Bulletin 181 + 2024 ACOG Clinical Practice Update Rh D prophylaxis

18. Preterm labor, PPROM & cervical insufficiency

    OB-PTL-0129 questions · Review Book p. 411 · ACOG Practice Bulletin 171, Management of Preterm Labor

19. Spontaneous abortion & pregnancy loss

    OB-SAB-0123 questions · Review Book p. 399 · 2018 ACOG Practice Bulletin 200, Early Pregnancy Loss

Written and clinically reviewed by TheCodexes.com (editorial policy). Guideline citations are the primary sources each topic follows.