What is the normal FHR?

Appeared in: NHM MP Staff Nurse-2019

Explanation

The normal baseline fetal heart rate (FHR) is defined as 110–160 beats per minute (bpm).
The option 120–160 bpm falls completely within this established normal range.
It is the most accurate choice as other options include values that are considered either too high (tachycardia) or too low (bradycardia).

Option B: This range is incorrect because an FHR greater than 160 bpm sustained for 10 minutes or more is defined as fetal tachycardia.
Option C: This range is incorrect because an FHR less than 110 bpm sustained for 10 minutes or more is defined as fetal bradycardia.
Option D: This range represents severe fetal bradycardia, which indicates significant fetal distress and requires immediate intervention.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Normal Fetal Heart Rate (FHR) Range as background academic context rather than a clinical decision trigger.
Monitoring FHR is a primary method for assessing fetal well-being during labor and delivery. Deviations from the normal range can be the first sign of fetal distress, requiring prompt nursing interventions.
Accurate interpretation of the FHR allows the nurse to differentiate between reassuring and non-reassuring patterns, guiding clinical decisions and communication with the healthcare team.
What if? If the FHR baseline is 100 bpm for over 10 minutes, this constitutes fetal bradycardia. The nurse's first actions should include repositioning the mother to her left side, administering oxygen, increasing IV fluids, and notifying the provider, as this may indicate fetal hypoxia.

How to Approach the Question

Identify the core question: What is the normal range for Fetal Heart Rate (FHR)?
Recall the standard medical definition for normal FHR, which is 110-160 beats per minute (bpm).
Evaluate each option against this standard range.
Option A (120-160 bpm) is a subset of the normal range and contains no abnormal values.
Option B (110-170 bpm) includes tachycardia (>160 bpm).
Option C (100-120 bpm) includes bradycardia (<110 bpm).

Concept Tested & Keywords

QTLvZ7YXBNyMOv33TtLteU

E6 Obstetrics Williams p. 45-63

E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 45-53

Practise the full NHM MP Staff Nurse-2019

Attempt every question from this paper in a timed mock, then review the full solution for each one.