AFetal Doppler – NSL800C33/34是手持的超声transducer used to detect thefetal heartbeatfor产前护理. It uses theDoppler effect提供心跳的可听见模拟。一些模型还显示心率每分钟节拍（BPM）。使用此显示器有时被称为Dopplerauscultation. The Doppler fetal monitor is commonly referred to simply as aDoppler或者fetal Doppler. It may be classified as a form ofDoppler ultrasonography(although usually not technically- 图but rather sound-generating).

多普勒胎儿监测器提供有关胎儿类似的信息胎儿听诊器. One advantage of the Doppler fetal monitor over a (purely acoustic) fetal stethoscope is the electronic audio output, which allows people other than the user to hear the heartbeat. One disadvantage is the greater complexity and cost and the lower reliability of an electronic device.

It was recently demonstrated that continuous Doppler enables theauscultation的valvular movements成人心脏检查期间未发现的血流和血流。多普勒听诊对检测的灵敏度为84％aortic regurgitations, while classic stethoscope auscultation presented a sensitivity of 58%. Moreover, Doppler auscultation was superior in the detection of impaired ventricular relaxation Since the physics of Doppler auscultation and classic auscultation are different, it has been suggested that both methods could complement each other.