Minnesota medicine
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To determine the value of transvaginal sonography in the evaluation of women with suspected ectopic pregnancy, we retrospectively studied 47 pregnant patients in whom both conventional transabdominal sonography (TAS) and transvaginal sonography (TVS) had been performed. Each patient had been given a standard TAS examination with the bladder moderately distended. After voiding, a TVS examination was performed. ⋯ These results support the claim that TVS contributes to diagnostic accuracy in early pregnancy. TVS should usually be used in conjunction with, and not as a substitute for, TAS. TVS is best used when TAS is not conclusive, or when immediate confirmation of an intrauterine pregnancy is desired.