Transvaginal ultrasonography is often performed during the first trimester.While preparing your 6-week gestation patient for this procedure,she expresses concerns over the necessity for this test.The nurse should explain that this diagnostic test may be indicated for a number of situations.(Select all that apply)

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Transvaginal ultrasound is useful in obese women whose thick abdominal layers cannot be penetrated with traditional abdominal ultrasound.This procedure is also used for identifying ectopic pregnancy,estimating gestational age,confirming fetal viability,and identifying fetal abnormalities.Amniotic fluid volume is assessed during the second and third trimester.Conventional ultrasound would be used.

Transvaginal Ultrasonography Is Often Performed During the First Trimester