Which of the following is a primary indication for performing a nonstress test during pregnancy?

To determine the exact gestational age of the fetus

To measure the amniotic fluid volume

To confirm the presence of labor contractions

To assess fetal well-being in cases of suspected fetal growth restriction

Answer and Explanation

The Correct Answer is D

A. To determine the exact gestational age of the fetus. Gestational age is estimated via ultrasound and fundal height, not an NST.

B. To measure the amniotic fluid volume. Amniotic fluid volume is assessed with an ultrasound and amniotic fluid index (AFI), not an NST.

C. To confirm the presence of labor contractions. An NST does not confirm labor contractions; it evaluates fetal heart rate in response to fetal movement.

D. To assess fetal well-being in cases of suspected fetal growth restriction. An NST evaluates fetal oxygenation and well-being, making it useful in cases of intrauterine growth restriction (IUGR) or other concerns about fetal health.

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Correct Answer is C

Explanation

A. Maternal bradycardia: Late decelerations are caused by uteroplacental insufficiency, not maternal heart rate changes.

B. Fetal head compression: Fetal head compression causes early decelerations, which are benign and mirror contractions. Late decelerations occur after contractions and indicate a more serious issue.

C. Uteroplacental insufficiency: Late decelerations occur due to decreased oxygenation from poor placental perfusion (uteroplacental insufficiency). Common causes include maternal hypotension, post-term pregnancy, uterine tachysystole, and placental abruption.

D. Umbilical cord compression: Umbilical cord compression causes variable decelerations, not late decelerations.

A. "It is useful for estimating fetal age." B. "This will determine if there is more than one fetus." C. "This is a screening tool for spina bifida." D. "It assists in identifying the location of the placenta and fetus."

Correct Answer is D

Explanation

A. "It is useful for estimating fetal age." While ultrasound can estimate fetal age, the primary purpose before amniocentesis is to guide needle placement.

B. "This will determine if there is more than one fetus." Although ultrasound can detect multiple pregnancies, this is not its main function before amniocentesis.

C. "This is a screening tool for spina bifida." Ultrasound can assist in detecting neural tube defects, but amniocentesis is primarily used for genetic testing.

D. "It assists in identifying the location of the placenta and fetus."Ultrasound helps determine the safest location for needle insertion to avoid injuring the fetus or placenta.

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Which of the following is a primary indication for performing a nonstress test during pregnancy?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who is in labor and has an external fetal monitor. The nurse observes late decelerations on the monitor strip and interprets them as indicating which of the following?

Correct Answer is C

Explanation

A nurse in a provider's office is caring for a client who is at 36 weeks of gestation and scheduled for an amniocentesis. The client asks why she is having an ultrasound prior to the procedure. Which of the following is an appropriate response by the nurse?

Correct Answer is D

Explanation

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