Telemetry strip showing normal 1:1 atrioventricular (AV) conduction followed by pause-dependent paroxysmal atrioventricular block (PAVB), which is initiated.

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Presentation transcript:

Telemetry strip showing normal 1:1 atrioventricular (AV) conduction followed by pause-dependent paroxysmal atrioventricular block (PAVB), which is initiated by an atrial extrasystole (arrow) and followed by a compensatory pause (bracket). Telemetry strip showing normal 1:1 atrioventricular (AV) conduction followed by pause-dependent paroxysmal atrioventricular block (PAVB), which is initiated by an atrial extrasystole (arrow) and followed by a compensatory pause (bracket). Subsequent sinus beats are unable to conduct to the ventricles due to complete AV block with ventricular asystole. There is also evidence of sinus acceleration (shortening of P-P interval) during ventricular asystole that does not affect the AV block (since sodium channels within the His-Purkinje fibres are inactivated). Finally, the PAVB appears to be terminated by a premature ventricular contraction. Auras R Atreya et al. BMJ Case Reports 2015;2015:bcr-2015-211801 ©2015 by BMJ Publishing Group Ltd