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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Fetal Assessment and Methods | 9% | - Indications for monitoring - Correlation with clinical status - Auxiliary assessment techniques |
| Topic 2: Electronic Monitoring Equipment | 5% | - Proper application and use - Calibration and accuracy - Troubleshooting artifacts |
| Topic 3: Pattern Recognition and Intervention | 70% | - Fetal heart rate patterns classification - Clinical decision-making and interventions - Interpretation per NICHD standards - Tracing evaluation and management |
| Topic 4: Professional Issues | 5% | - Documentation standards - Safety and quality improvement - Legal and ethical aspects |
| Topic 5: Physiology | 11% | - Fetal cardiovascular physiology - Factors affecting fetal oxygenation - Uteroplacental function |
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48. Frage
Fetal respiratory acidosis is most likely to present with which of the following fetal heart rate decelerations?
Antwort: B
Begründung:
Comprehensive and Detailed Explanation From Exact Extract-Based NCC C-EFM References:
NCC and AWHONN physiology teachings:
* Variable decelerations caused by cord compression lead to:
* Transient interruption of umbilical venous flow
* Impaired fetal gas exchange
* Acute rise in CO#
* Respiratory acidosis (early phase of hypoxemia)
This is well documented:
* Early decelerations # head compression # NOT associated with acidemia.
* Late decelerations # uteroplacental insufficiency # metabolic acidosis, not respiratory.
Thus:
* Variable decelerations # respiratory acidosis
* Late decelerations # metabolic acidosis
Correct answer: C. Variable
References:NCC Physiology Domain; AWHONN FHMPP; Menihan EFM; Simpson & Creehan; Creasy & Resnik.
49. Frage
Interventions undertaken to address fetal tachycardia are targeted at maximizing
Antwort: C
Begründung:
Comprehensive and Detailed Explanation From Exact Extract NCC-Recommended Sources Fetal tachycardia is typically caused by maternal fever, dehydration, hypoxia, medications, infection, or fetal stress. AWHONN and Simpson & Creehan emphasize that management focuses on improving oxygen delivery across the placenta, which is governed by uteroplacental perfusion.
Menihan's EFM text states that "interventions for fetal tachycardia must address oxygen transfer by optimizing uteroplacental blood flow," including hydration, reducing uterine activity, maternal repositioning, and treating maternal fever.
Increasing maternal circulation alone is insufficient unless it improves placental blood flow. Enhancing fetal sympathetic tone is not a clinical goal and would worsen tachycardia.
Creasy & Resnik highlight that fetal heart rate abnormalities resolve when uteroplacental perfusion is restored, confirming this as the primary target of intervention.
References:
AWHONN - Fetal Heart Monitoring Principles & PracticesSimpson & Creehan - Perinatal NursingMenihan
- Electronic Fetal MonitoringCreasy & Resnik - Maternal-Fetal MedicineMiller's Pocket Guide
50. Frage
A woman in labor has been pushing for 4 hours. For the last 2 hours, there have been recurrent variable decelerations. Variability has evolved from moderate to minimal. Cervical exam is 10/100%
/+2, fetal head OP. There has been no fetal descent for the last 45 minutes. Based on the tracing shown, the most reasonable approach is
Antwort: B
Begründung:
Comprehensive and Detailed Explanation From Exact Extract (NCC-Referenced Sources) According to the NCC C-EFM Exam Outline and AWHONN Fetal Heart Monitoring (5th & 6th ed.), recurrent variable decelerations with progressive reduction in variability reflect worsening fetal hypoxia, especially when coupled with prolonged second stage and arrest of descent.
AWHONN and Menihan both state that:
* "Minimal variability with recurrent decelerations indicates inability of the fetus to maintain adequate oxygenation."
* "Failure of descent in second stage with non-reassuring patterns requires operative delivery." Creasy & Resnik emphasize that operative vaginal birth requires:
(1) fetal head at +2 station or below,
(2) favorable position,
(3) reassuring fetal status.
Here, the fetus is OP, descent has arrested, and FHR is non-reassuring. This contraindicates vacuum extraction.
Therefore, the appropriate management under NCC competencies is cesarean birth.
51. Frage
When accelerations precede a variable deceleration pattern, this is caused by
Antwort: B
Begründung:
Comprehensive and Detailed Explanation From Exact Extract (No URLs or Links) NCC-recommended physiologic texts (AWHONN, Menihan, Simpson, Creasy & Resnik) explain that variable decelerations are caused by umbilical cord compression. This process occurs in a three-step sequence, well known in fetal monitoring physiology:
* Umbilical vein occlusion occurs first # decreases fetal venous return # brief fetal acceleration (a compensatory sympathetic response).
* Umbilical artery occlusion follows # increases fetal systemic vascular resistance # variable deceleration as vagal stimulation lowers the fetal heart rate.
* Release of compression # post-deceleration acceleration may occur.
Thus, an acceleration immediately before a variable deceleration represents the initial compression of the umbilical vein, not a hypoxic response. This is a normal physiologic response to transient cord compression, often described in AWHONN and Menihan's physiologic explanation of "shoulders" around variable decelerations.
Oligohydramnios can contribute to cord compression but does not explain accelerations preceding the deceleration. A "hypoxic reflex" would not produce a pre-deceleration acceleration.
Therefore, the correct physiologic cause is:
Umbilical vein occlusion.
References (No URLs)
* NCC C-EFM Candidate Guide 2025 - Physiology
* AWHONN Fetal Heart Monitoring Principles
* Menihan: Electronic Fetal Monitoring
* Simpson & Creehan: Perinatal Nursing
* Creasy & Resnik: Maternal-Fetal Medicine
52. Frage
A 30-minute tracing with moderate variability, accelerations, and one variable deceleration would be classified as:
Antwort: B
Begründung:
Comprehensive and Detailed Explanation From NCC-Aligned Sources:
NICHD/NCC criteria:
Category I must have ALL of the following:
* Baseline 110-160 bpm
* Moderate variability
* No late or variable decelerations
* Early decelerations may be present or absent
* Accelerations may be present or absent
Because this tracing has one variable deceleration, it fails Category I criterion ("no late or variable decelerations").
Category III requires:
* Absent variability with recurrent late decels, recurrent variables, or bradycardia, or
* Sinusoidal pattern
Those findings are not present.
Therefore, any tracing that:
* Has moderate variability and accelerations,
* But includes a variable deceleration, and
* Does not meet Category III criteria
...falls into the Category II (indeterminate) group.
Correct classification: B. Category II.
References:NCC C-EFM Candidate Guide; NICHD Three-Tier FHR Interpretation System; AWHONN FHMPP; Menihan; Simpson & Creehan.
53. Frage
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