NCLEX-RNHealth Promotion and MaintenanceEasy
A nurse is conducting a prenatal education class for a group of expectant parents. When discussing fetal development, which statement by a client indicates an understanding of when the fetal heart begins to beat?
- A“I think the baby’s heart starts to beat around 12 weeks of pregnancy.”
- B“I should be able to hear the heartbeat with a Doppler by the end of the first month.”
- C“The heart begins to form and beat during the second trimester.”
- D“The baby’s heart starts pumping blood sometime in the third week after conception.”
Show answer & explanationAnswer & explanation
Correct answer: D. “The baby’s heart starts pumping blood sometime in the third week after conception.”
The fetal heart begins to beat very early in development, specifically by the end of the third week after conception (approximately 5 weeks gestational age). This is a critical early milestone.
Why the other options are wrong
- A. 12 weeks is too late; the heart is well-developed and beating by this time.
- B. While the heart beats early, it is typically detectable by Doppler around 10-12 weeks, not by the end of the first month.
- C. The second trimester starts at 13 weeks; the heart has been beating for many weeks by then.
Fetal Heartbeat Onset
The fetal heart begins to beat approximately 21-22 days after conception, marking a crucial early developmental milestone.
- Occurs around 3 weeks post-conception.
- Essential for early circulation of blood.
- Not typically detectable by Doppler until 10-12 weeks gestation.
Memory trick: Heart Starts Pumping Early, Little Beats Begin.