• Timothy B Jang and Amy H Kaji.
• Department of Emergency Medicine, David Geffen School of Medicine at UCLA, Olive View Medical Center and UCLA Medical Center, Sylmar, California USA (T.B.J.); and Department of Emergency Medicine, David Geffen School of Medicine at UCLA, Harbor-UCLA Medical Center, Torrance, California USA (T.B.J., A.H.K.). tbj@ucla.edu.
• J Ultrasound Med. 2015 Feb 1; 34 (2): 221-4.

ObjectivesThe purpose of this study was to compare the accuracy of first-trimester pelvic sonography done by physicians after a 2-week emergency ultrasound elective to similarly numbered examinations done by physicians longitudinally over several years of residency training.MethodsWe conducted a secondary analysis of a previously reported prospective study of pelvic sonography for symptomatic first-trimester pregnancy. The 21st through 40th examinations were compared between those who completed an emergency ultrasound elective and those who did not. The reference standard was pelvic sonography done by the department of radiology.ResultsEighty-six examinations (34%) were done by 12 operators who did not participate in an emergency ultrasound elective, and 171 examinations (67%) were done by 13 operators who completed an emergency ultrasound elective. There was no statistical difference between the groups with regard to identifying an intrauterine pregnancy, molar pregnancy, ectopic pregnancy, or adnexal mass.ConclusionsThe accuracy of pelvic sonography for first-trimester pregnancy was comparable between physicians who participated in a 2-week emergency ultrasound elective and those who performed the same number of examinations over a longer period during residency training.© 2015 by the American Institute of Ultrasound in Medicine.

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