The Magic of Heart Sounds - Ishwaranand

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The Magic of Heart Sounds

The Magic of Heart Sounds

The Magic of Heart Sounds, heart sounds, human heart, circulation, heartbeat,

  • The heart produces two sounds, Which can be heard with the help of stethoscope as lubb and dub or dup.

First Sounds (lubb)

  • The first sound is produced during ventricular contraction. It is known as systolic sound. This sound is low, dull, and last longer. It is heard with a stethoscope as a club.

Second Sound (dub or dup)

  • The second sound is produced at the beginning of ventricular relaxation or diastole. It is known as diastolic sound. This sound is sharp and short. It is heard with a stethoscope as a dub or dups.
The Magic of Heart Sounds, heart sounds, human heart, circulation, heartbeat,

Third Sound (hiss)

  • Normally heart does not produce any other sound than lubb and dub or dup., but in a certain abnormal condition,  heard produce a third sound known as murmurs. It is heard with a stethoscope as a hiss. The third sound is produced due to leaking of the blood or incomplete closing of valves or vibrations. 
Thus the heart sounds are denoted as lubb - dub or lubb - dub - hiss or lubb - hiss - dub.

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