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Post-exercise Syncope: Difference between revisions
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Vasovagal syncope after exercise is considered to be a benign occurrence <cite>Krediet04b</cite>. | Vasovagal syncope after exercise is considered to be a benign occurrence <cite>Krediet04b</cite>. | ||
==Muscle pump== | |||
During exercise, rhythmically contracting skeletal muscles in the lower part of the body reduce the degree of venous pooling by squeezing veins, thereby increasing the venous return of blood to the heart. This phenomenon is known as the ‘muscle pump. The sudden removal of the muscle pump after stopping exercise decreases cardiac preload which, together with a rapid return of vagal tone, may promote vasovagal syncope. | During exercise, rhythmically contracting skeletal muscles in the lower part of the body reduce the degree of venous pooling by squeezing veins, thereby increasing the venous return of blood to the heart. This phenomenon is known as the ‘muscle pump. The sudden removal of the muscle pump after stopping exercise decreases cardiac preload which, together with a rapid return of vagal tone, may promote vasovagal syncope. | ||