Obstetric Nurse Test Obstetric Nurse Intrapartum Fetal Monitoring 5

Question 1

A nurse documents 'baseline FHR 140 bpm, moderate variability, accelerations present, no decelerations.' According to NICHD classification, this tracing is:

Accepted Answer

Category I — normal

Answer

A Category I tracing includes a baseline of 110–160 bpm, moderate variability, no late or variable decelerations, and presence of early decelerations or accelerations.

Question 2

Which of the following interventions is used to assess fetal response and rule out acidosis when the FHR tracing shows absent accelerations?

Accepted Answer

Fetal scalp blood sampling or vibroacoustic stimulation

Answer

Vibroacoustic stimulation (VAS) or fetal scalp stimulation can elicit an acceleration, indicating the fetus is not acidotic and that the absent accelerations are likely due to a sleep state.

Question 3

In which of the following situations is continuous electronic fetal monitoring (EFM) MOST indicated over intermittent auscultation?

Accepted Answer

Patient with preeclampsia receiving oxytocin augmentation

Answer

Continuous EFM is indicated for high-risk conditions such as preeclampsia, oxytocin use, VBAC, meconium, preterm labor, or any condition placing the fetus at increased risk.

Question 4

During transition, the nurse notes a 3-minute deceleration to 80 bpm followed by a return to baseline of 145 bpm. After repositioning and oxygen, the deceleration resolves. How should the nurse classify this event?

Accepted Answer

Prolonged deceleration — Category II finding

Answer

A deceleration lasting ≥2 but <10 minutes is a prolonged deceleration; since it resolved and no other Category III features are present, it remains a Category II finding requiring close surveillance.

Question 5

The nurse is caring for a laboring patient at 30 weeks gestation. An acceleration is considered reassuring in a preterm fetus if the FHR rises at least:

Accepted Answer

10 bpm lasting 10 seconds

Answer

For fetuses <32 weeks gestation, the acceleration threshold is ≥10 bpm above baseline lasting ≥10 seconds, reflecting the immaturity of the autonomic nervous system.

Obstetric Nurse Test Practice Test

Obstetric Nurse Test Practice Test

Obstetric Nurse Test Obstetric Nurse Intrapartum Fetal Monitoring 5