Obstetric Nurse Test Obstetric Nurse Intrapartum Fetal Monitoring 3

Question 1

A prolonged deceleration is defined as a FHR decrease of at least 15 bpm below baseline lasting:

Accepted Answer

2 minutes or more but less than 10 minutes

Answer

A prolonged deceleration lasts ≥2 minutes but <10 minutes; if it lasts ≥10 minutes, it represents a baseline change.

Question 2

Which fetal heart rate characteristic is defined as fluctuations in the baseline FHR that are irregular in amplitude and frequency, measured at 2 cycles per minute?

Accepted Answer

Variability

Answer

Baseline FHR variability refers to the irregular fluctuations above and below the baseline, reflecting the interplay between the sympathetic and parasympathetic nervous systems.

Question 3

A patient at 38 weeks gestation is receiving oxytocin augmentation. The FHR shows moderate variability, no accelerations, and occasional mild variable decelerations. What category is this tracing?

Accepted Answer

Category II

Answer

Any tracing that does not meet Category I or Category III criteria is Category II; recurrent variable decelerations with moderate variability is Category II.

Question 4

During pushing in the second stage, the nurse observes FHR decelerations that begin after the contraction peaks and have a slow return to baseline. This pattern is MOST consistent with:

Accepted Answer

Late decelerations indicating uteroplacental insufficiency

Answer

Late decelerations that begin after the contraction peak and slowly return to baseline reflect uteroplacental insufficiency and impaired gas exchange.

Question 5

Which of the following fetal scalp electrode (FSE) placements is CONTRAINDICATED?

Accepted Answer

When the patient is HIV-positive

Answer

FSE is contraindicated in patients with HIV, hepatitis B or C, or other blood-borne infections due to the risk of vertical transmission via the puncture site.

Obstetric Nurse Test Practice Test

Obstetric Nurse Test Practice Test

Obstetric Nurse Test Obstetric Nurse Intrapartum Fetal Monitoring 3