Final answer:
A nurse needs to differentiate the FHR which is faster (110-160 bpm) from the mother’s heart rate (60-100 bpm) when using a Doppler. Attention to the sound qualities and simultaneous palpation of the mother’s pulse can help ensure accurate monitoring.
Step-by-step explanation:
To ensure the Fetal Heart Rate (FHR) is being correctly differentiated from the mother's heart rate when using a Doppler, the nurse needs to be aware of the rate differences between the two. The fetal heart rate is typically faster than the adult heart rate, usually between 110 and 160 beats per minute, while an adult's resting heart rate ranges from 60 to 100 beats per minute. If the detected heart rate is within the adult's range, the nurse should reposition the Doppler and continue to search for the baby's heart rate.
Another way to distinguish between the two is by using the auditory cues provided by the Doppler. The FHR often has a more rapid, galloping rhythm, contrasting with the mother's heart rate which has a regular, slower beat. Paying attention to these differences can help ensure that the nurse is monitoring the fetal heart rate accurately.
Additionally, a nurse can simultaneously palpate the mother's pulse while using the Doppler to ensure that the beats per minute they are hearing are distinct from the mother's pulse. This method provides a direct comparison and can assist in verifying that the FHR is being monitored rather than the mother's heart rate.