Obstetric Nurse Test Obstetric Nurse Intrapartum Fetal Monitoring 4

Question 1

When should oxytocin be discontinued or decreased in response to an abnormal FHR tracing?

Accepted Answer

When Category III features are present or tachysystole occurs with FHR changes

Answer

Oxytocin should be reduced or discontinued when tachysystole with associated FHR changes or Category III patterns occur to reduce uterine activity and improve fetal oxygenation.

Question 2

Amnioinfusion is MOST commonly indicated for which fetal monitoring finding?

Accepted Answer

Recurrent variable decelerations thought to be due to cord compression

Answer

Amnioinfusion instills saline into the uterine cavity to cushion the umbilical cord, relieving recurrent variable decelerations associated with oligohydramnios or cord compression.

Question 3

A patient's FHR tracing shows accelerations with fetal movement. According to ACOG, an acceleration in a fetus ≥32 weeks gestation is defined as a peak increase of at least:

Accepted Answer

15 bpm above baseline lasting ≥15 seconds

Answer

In fetuses ≥32 weeks, a qualifying acceleration must reach a peak ≥15 bpm above the baseline and last ≥15 seconds but <2 minutes.

Question 4

Which maternal condition is MOST likely to cause fetal tachycardia during intrapartum monitoring?

Accepted Answer

Maternal chorioamnionitis

Answer

Chorioamnionitis causes maternal and fetal fever and infection, leading to fetal tachycardia (>160 bpm) as the fetal heart responds to inflammatory mediators and elevated temperature.

Question 5

The nurse observes a FHR pattern where decelerations abruptly drop ≥15 bpm and vary in onset, depth, and duration with each contraction. This pattern is BEST described as:

Accepted Answer

Variable decelerations

Answer

Variable decelerations are characterized by an abrupt onset (reaching nadir in <30 seconds), variable timing relative to contractions, and variable depth and duration.

Obstetric Nurse Test Practice Test

Obstetric Nurse Test Practice Test

Obstetric Nurse Test Obstetric Nurse Intrapartum Fetal Monitoring 4