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Atrioventricular dissociation

atrioventricular dissociation

atrioventricular dissociation n.
A condition in which the atria and ventricles contract independently, especially as resulting from the slowing of an atrial pacemaker or the acceleration of a ventricular pacemaker.


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  • Atrioventricular extrasystole

    atrioventricular extrasystole atrioventricular extrasystole n. A premature contraction of the heart in which the stimulus arises from either the A-V node or A-V bundle. Also called A-V extrasystole.

  • Atrioventricular groove

    atrioventricular groove atrioventricular groove n. See coronary sulcus.

  • Atrioventricular interval

    atrioventricular interval atrioventricular interval n. The time from the beginning of atrial systole to the beginning of ventricular systole as measured on an electrocardiogram.

  • Atrioventricular nodal extrasystole

    atrioventricular nodal extrasystole atrioventricular nodal extrasystole n. A premature beat arising from the A-V node and leading to a simultaneous or almost simultaneous contraction of atria and ventricles. Also called A-V nodal extrasystole, nodal extrasystole.

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