Transvaginal ultrasonography is often performed during the first trimester. A 6-week-gestation client expresses concerns over the necessity for this test. The nurse should explain that this diagnostic test may be necessary to determine which of the following? (Select all that apply.)

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A bicornuate uterus, multifetal gestation, presence of ovarian cysts, and presence and location of pregnancy can be determined by transvaginal ultrasound in the first trimester of pregnancy. This procedure is also used for estimating gestational age, confirming fetal viability, identifying fetal abnormalities or chromosomal defects, and identifying the maternal abnormalities mentioned, as well as fibroids. Amniotic fluid volume is assessed during the second and third trimesters. Conventional ultrasound would be used.

Transvaginal Ultrasonography Is Often Performed During the First Trimester