An echocardiogram, or echo, is a heart ultrasound. It uses sound waves to create an image of the heart. Doctors can use this image to diagnose heart failure, as well as assess whether heart failure ...
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What are heart sounds and how to know if they’re normal
S1 and S2 are the normal heart sounds you hear when the heart valves close. Heart murmurs are extra sounds that can be heard during systole, diastole, or as a continuous sound. S3 and S4 are abnormal ...
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