As a result, one may hear a fourth heart sound due to the stiff ventricle.
2.
A fourth heart sound S4 is referred to as an atrial gallop and is produced by the sound of blood being forced into a stiff ventricle.
3.
The medical history of the patient ( endurance sports ) and physical examination ( bradycardia, and maybe a third or fourth heart sound ), can give important hints.
4.
The "'fourth heart sound "'or "'S 4 "'is a rare extra heart sound that occurs during late diastole, immediately before the normal two " lub-dub " heart sounds ( S 1 and S 2 ).
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