What is a Fetal Doppler?

Fetal Doppler is a Heartbeat Monitor,it is used for check ups,the small device your OB uses to hear the Fetal Heartbeat during ur check ups.
Fetal Doppler,provides a non-invasive diagnostic procedure to detect and measure fetal heart rates.
This heartbeat monitor,works on the principal of the Doppler Effect.
Define Doppler Effect: The Doppler Effect refers to the fact that sound pitch increases as the source moves toward the listener and decreases as it moves away.. A good example is how a car sounds when it drives by, the change in sound is the doppler effect.
The sounds produced by the Fetal Doppler are not the actual sound of the fetal heart, but a representation of the fetal heart.
Fetal Doppler Heartbeat Monitors utilize a transducer commonly referred to as a probe containing piezoelectric crystals.These probes send a series of short sound pulses into the body and pauses between each pulse to listen for the returning sounds. The Fetal Doppler then determines the direction and depth of each returning sound and coverts this into an audible output.