NCC Updated EFM Exam Questions and Answers by ibraheem

Comprehensive and Detailed Explanation From NCC-Aligned Sources:

NCC and AWHONN emphasize unit-wide shared responsibility for:

Recognizing abnormal maternal or fetal findings

Calling for help

Triggering emergency responses (e.g., unit huddle, rapid response, safety pathways)

Safety culture requires:

Any staff member (RN, tech, provider) to initiate an alarm or escalate concern

No hierarchy delay

Rapid action when fetal compromise is suspected

Why the other answers are wrong:

A. Determined by unit leaders → incorrect; safety is team-wide, not hierarchical.

C. Occur infrequently → false; alarms must occur whenever needed, not limited.

Correct answer: B. Can be called by anyone.

Comprehensive and Detailed Explanation From NCC-Aligned Sources:

NICHD definitions:

A variable deceleration is identified by:

Abrupt onset(drop from baseline to nadir in <30 seconds)

Depth ≥15 bpm

Duration ≥15 seconds and <2 minutes

Variable timing relative to contractions

Variable shape (sharp drop, jagged descents, rapid recovery)

The scenario describes:

Abrupt drop from 125 → 80 bpm (rapid onset)

Lasting 90 seconds (still <2 minutes)

Gradual return but still within variable range

Occurring during a contraction

Depth >15 bpm

This meets ALL criteria for a variable deceleration.

Why the other options are wrong:

A. Early deceleration

Requires gradual onset (>30 seconds).

Mirrors contraction shape.

Caused by head compression.

This decel is abrupt, so NOT early.

B. Prolonged deceleration

Requires ≥2 minutes and <10 minutes.

This decel lasts 90 seconds, which is below the threshold.

Correct classification: Variable deceleration.

Comprehensive and Detailed Explanation From NCC-Aligned Sources:

This tracing shows:

Baseline ~170–175 bpm → fetal tachycardia

Minimal variability

No contractions of significance

Maternal treatment with magnesium sulfate, which typically decreases baseline and variability—not increase it

NCC and AWHONN physiology guidelines emphasize that fetal tachycardia is most commonly associated with maternal infection, including chorioamnionitis, especially in preterm labor.

Magnesium sulfate does not cause tachycardia; it generally causes:

↓ baseline

↓ variability

Thus, fetal tachycardia + minimal variability in a preterm patient strongly suggests maternal infection, requiring evaluation for chorioamnionitis.

Why the wrong answers are incorrect:

A. Acetaminophen → used after confirming fever, not before evaluating the cause.

B. Discontinuing magnesium → magnesium sulfate does not cause tachycardia; discontinuing it removes fetal neuroprotection.

Comprehensive and Detailed Explanation From Exact Extract–Based NCC C-EFM References:

The tracing demonstrates:

Baseline ~150 bpm

Variability ≥ 25 bpm amplitude, highly erratic and wide

No sustained decelerations

No sustained accelerations ≥ 2 min

NICHD/NCC definition of marked variability:

Amplitude of baseline FHR fluctuations greater than 25 bpm.

Marked variability often reflects transient fetal autonomic instability due to:

Fetal stimulation

Mild hypoxemia

Maternal anxiety

Drugs (e.g., butorphanol)

Why other answers are incorrect:

B. Multiple prolonged accelerations — No accelerations of ≥2 minutes are present.

C. Tachycardia with variables — Baseline is NOT tachycardic (>160 bpm), and decelerations are not present.

Thus, the correct interpretation is A. Marked variability.