How do you check heart sound?

Answer 1

You can use a stethoscope to hear the heartbeat, they also use a EKG (ECG)(Electrocardiogram) to check the rhythm and electrical activity of the heart, basically it's used to see if the heart is working properly. They might also use an Ultrasound or Echo (also known as an echocardiogram) so see and hear the valves more closely.

In some cases, such as checking the heartbeat of an unborn child, an ultrasound device can be used.