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 ...

San Francisco, CA - Calling into question the "time-honored" tradition of using third and fourth heart sounds to identify cardiac abnormalities, a new study indicates that the overall diagnostic ...

Atrial fibrillation, or A-fib, is an irregular heart rhythm that increases a person’s risk of stroke, heart failure, and even premature death. While many risk factors contribute to A-fib, one stands ...

Add Yahoo as a preferred source to see more of our stories on Google. A sudden onset of irregular heart rhythms can be disorienting. wildpixel/iStock via Getty Images Plus Atrial fibrillation, or ...

SINGAPORE – In 2003, Mr Tan Check Wan woke up to a tightness in his chest. His wife, who was a trained nurse, checked his pulse and, finding it irregular, decided that he needed to be taken to ...