EFM Exam Dumps : Certified - Electronic Fetal Monitoring

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

Sustained fetal supraventricular tachycardia (SVT) often produces heart rates > 200–240 bpm, causing:

Poor ventricular filling

Decreased stroke volume

Reduced cardiac output

Congestive heart failure

Progressive fluid accumulation

NCC and AWHONN emphasize that untreated SVT leads to hydrops fetalis, characterized by:

Ascites

Pleural effusion

Pericardial effusion

Skin edema

Why the other answers are incorrect:

A. Fetal anemia — Causes tachycardia but is not caused by SVT.

C. Neonatal pacemaker — Pacemakers treat heart block, not SVT.

Correct answer: B. Hydrops fetalis

Comprehensive and Detailed Explanation From Exact Extract (NCC C-EFM sources: AWHONN, Miller’s Pocket Guide, Menihan, Simpson, Creasy & Resnik, 2025 Candidate Guide)

AWHONN and Menihan emphasize that most fetal dysrhythmias detected intrapartum are premature atrial contractions (PACs)—the most common benign rhythm variation. They typically appear as intermittent, irregular deflections on the fetal heart rate tracing without affecting variability or baseline.

Miller’s Pocket Guide to Fetal Monitoring states that PACs are usually transient, self-limiting, and require only observation unless accompanied by tachyarrhythmia or hemodynamic compromise. When variability is preserved and no repetitive pattern or sustained tachycardia occurs, no intrauterine resuscitation measures are indicated.

Simpson and Creehan describe that oxygen administration and fluid boluses are not recommended for benign dysrhythmias, as they do not improve fetal conduction patterns and may contribute to unnecessary interventions.

The NCC 2025 Candidate Guide specifies that correct management requires distinguishing benign arrhythmias from pathologic tachyarrhythmias, which would require escalation. In the absence of fetal compromise or maternal pathology, the appropriate action is continued observation.

Therefore, the correct management is to continue to observe.

Comprehensive and Detailed Explanation From Exact Extract (NCC C-EFM sources: AWHONN, Miller’s Pocket Guide, Menihan, Simpson, Creasy & Resnik, 2025 Candidate Guide)

The tracing displays baseline fetal bradycardia, with a rate near 100 bpm, minimal variability, and preserved periodic response. According to AWHONN’s Fetal Heart Monitoring Principles & Practices and Menihan’s Electronic Fetal Monitoring, maternal conditions that reduce oxygen-carrying capacity—including maternal anemia—can lead to lower fetal oxygen delivery, prompting a fetal compensatory bradycardic baseline.

Creasy & Resnik’s Maternal-Fetal Medicine notes that sickle cell anemia decreases maternal hemoglobin function even when maternal vital signs appear stable, reducing uteroplacental oxygen transport. Fetuses of mothers with sickling disorders may demonstrate lower resting fetal heart rates due to chronic mild hypoxemia.

Conversely, Eisenmenger’s syndrome is associated with severe maternal cyanosis and high fetal mortality, often producing late decelerations and growth restriction rather than mild bradycardia. Systemic lupus erythematosus (SLE) is commonly associated with heart block (especially with anti-Ro/SSA antibodies), which is not displayed here, as true heart block presents with a fixed atrial–ventricular dissociation and FHR < 60 bpm.

Thus, based on fetal physiology and maternal disease correlations taught in NCC-recommended sources, the tracing is most consistent with maternal sickle cell anemia.