Verywell Health on MSN4h
What Is the Significance of an S1 Heart Sound?
The S1 heart sound is two of your heart valves closing. It's the first sound doctors can hear with a stethoscope. Learn what ...
Verywell Health on MSN4h
S3 Heart Sound: Abnormal Results and Causes
The S3 heart sound is essentially blood rushing into a specific chamber. Learn how this sound correlates to congestive heart ...