The nurse recognizes that a nonstress test (NST) in which two or ...

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The nurse recognizes that a nonstress test (NST) in which two or more fetal heart rate (FHR) accelerations of 15 beats/min or more occur with fetal movement in a 20-minute period is:
 
  a. Nonreactive c. Negative
  b. Positive d. Reactive

Question 2

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).
  a. Multifetal gestation
  b. Obesity
  c. Fetal abnormalities
  d. Amniotic fluid volume
  e. Ectopic pregnancy

[kaylee05]

Answer to Question 1

ANS: D
The NST is reactive (normal) when two or more FHR accelerations of at least 15 beats/min (each with a duration of at least 15 seconds) occur in a 20-minute period. A nonreactive result means that the heart rate did not accelerate during fetal movement. A positive result is not used with NST. Contraction stress test (CST) uses positive as a result term. A negative result is not used with NST. CST uses negative as a result term.

Answer to Question 2

ANS: A, B, C, E
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 multifetal gestation, 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.