A client who says she is "about 6 weeks pregnant" hears the baby's heartbeat for the first time through a Doppler. Based on this data, which conclusion by the nurse is the most appropriate?
A) The mother is at 8 to 12 weeks' gestation.
B) The mother is at 16 weeks' gestation.
C) The mother is at 4 to 8 weeks' gestation.
D) The mother is at 20 weeks' gestation.
Answer: A
The ultrasonic Doppler device is the primary tool for assessing fetal heartbeat. It can detect fetal heartbeat, on average, at 8 to 12 weeks' gestation. If an ultrasonic Doppler is not available, a fetoscope may be used. The fetal heartbeat can be detected by fetoscope as early as week 16 and almost always by 19 or 20 weeks' gestation. The mother is not at 4 to 8 weeks' gestation because the Doppler device detected fetal heartbeat. If the mother has not yet heard the fetal heartbeat, she must be at less than 16 or 20 weeks' gestation.
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