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A-V DISSOCIATION

A-V dissociation occurs when the atria and ventricles are activated by different pacemakers, leading to a competition for control of ventricular activation. The resulting duel is dominated by the pacemaker with the fastest rate. If the sinus node is lazy, it allows an auxiliary pacemaker to take over, resulting in A-V dissociation by default.

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A-V DISSOCIATION

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  1. A-V DISSOCIATION DUE TO DEFAULT

  2. A-V DISSOCIATION “A-V DISSOCIATION REPRESENTS THE CIRCUMSTANCE IN WHICH THE ATRIA ARE ACITIVATED BY ONE PACEMAKER AND THE VENTRICLES BY ANOTHER—THE TWO PACEMAKERS COMPETING FOR CONTROL OF VENTRICULA R ACTIVATION. IN THE RESULTING DUEL, THE ONE WITH THE FASTEST RATE WILL DOMINATE THE OVERALL RHYTHM.”

  3. IF THE SINUS NODE IS LAZY, IT PERMITS AN AUXILLARY PACEMAKER TO SURFACE – “A-V DISSOCIATION BY DEFAULT”

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