What Is an Extrasystole?

The premature contraction of the normal myocardium refers to the effect of a large artificial stimulus or the impulses issued by ectopic rhythm points after the effective refractory period and before the next excitation from the sinoatrial node arrives. Can produce a pre-excitation, causing an early contraction, called pre-period contraction or premature beats

Premature contraction of common myocardium

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The premature contraction of the normal myocardium refers to the effect of a large artificial stimulus or the impulses issued by ectopic rhythm points after the effective refractory period and before the next excitement from the sinoatrial node arrives. Can produce a pre-excitation, causing an early contraction, called pre-period contraction or premature beats
Premature contraction of common myocardium

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