Routine First-trimester Ultrasound in Obstetrics & Gynecology — Case | General Gynecology | SMLE Q#11575
SMLE Question #11575
Obstetrics & Gynecology
General Gynecology
Objective: OBJ-ETH-STERIL
Last updated: February 2026
A 36-year-old primigravida at 10 weeks’ gestation presents for a routine first-trimester ultrasound. She has regular cycles but is unsure of the exact last menstrual period date. The embryo and gestational sac are clearly visualised. To most accurately determine gestational age at this stage of pregnancy, which single fetal measurement should be used?
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