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junctional extrasystole |
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extrasystole /ex·tra·sys·to·le/ (-sis´to-le) a premature cardiac contraction that is independent of the normal rhythm and arises in response to an impulse outside the sinoatrial node. atrial extrasystole atrial premature complex. atrioventricular (AV) extrasystole atrioventricular junctional premature complex. infranodal extrasystole ventricular e. interpolated extrasystole see under beat. junctional extrasystole atrioventricular junctional premature complex. nodal extrasystole atrioventricular e. retrograde extrasystole a premature ventricular contraction, followed by a premature atrial contraction, due to transmission of the stimulus backward, usually over the bundle of His. ventricular extrasystole ventricular premature complex. junctional extrasystole Etymology: L, jungere, to join, extra, beyond; Gk, systole, contraction a premature heartbeat that usually arises from the junction of the atrioventricular (AV) node and the AV bundle, the primary junctional pacing site, but may also arise from within the AV bundle. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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