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Ultrasound Analytics

ARDMS Obstetrics & Gynecology (OB/GYN) Practice Questions

The ARDMS OB/GYN specialty exam has the highest first-time pass rate among all seven specialties (80% in 2025), but its content breadth is substantial. It covers the full spectrum of obstetric and gynecologic ultrasound: normal and abnormal pregnancy, fetal anatomy survey, biometry, Doppler surveillance, and gynecologic pathology.

Exam Overview

  • Credential: RDMS
  • Format: 170 questions, 3 hours
  • 2025 first-time pass rate: 80%

High-Yield Focus Areas for the OB/GYN Exam

  • First trimester evaluation and nuchal translucency measurement
  • Fetal anatomy survey (18–22 weeks)
  • Obstetric biometry and gestational age assessment
  • Gynecologic pathology (ovarian, uterine, adnexal)
  • Doppler surveillance and growth restriction

Key Topics Tested

  • Normal early pregnancy and ectopic pregnancy
  • Nuchal translucency and first trimester screening
  • Fetal anatomy survey structures
  • Obstetric biometry (BPD, HC, AC, FL)
  • Placental evaluation and previa
  • Doppler waveforms (umbilical, MCA, uterine)
  • Intrauterine growth restriction
  • Gynecologic pathology
  • Adnexal masses

Study Tips for the OB/GYN Exam

Download the official ARDMS OB/GYN content outline and map your study sessions to each domain's published weight. Use practice questions that match the board-style multiple-choice format, and after every incorrect answer engage with the explanation at the concept level — not just the correct option. The 27-point gap between first-time and repeat-taker pass rates across all ARDMS exams means that arriving at the testing center truly prepared the first time is the single highest-leverage investment you can make.

Ultrasound Analytics quiz mode lets you run 25, 50, or 100 OB/GYN-specific questions per session with immediate AI tutoring after every answer. The analytics dashboard tracks your accuracy by content domain so you can see exactly where you need more work before exam day.

Related ARDMS Resources

Planning more than one registration? These specialties are most often paired with OB/GYN:

For the complete domain breakdown, read the full OB/GYN specialty overview, browse all practice-question guides, or compare ARDMS specialties side by side.