TY - JOUR
T1 - A His bundle extrasystole can both induce and reverse 2:1 atrioventricular block
AU - Khan, Abdullah
AU - Ameen, Abdul
AU - Maraj, Ilir
AU - Turitto, Gioia
AU - El-Sherif, Nabil E.
PY - 2011/11
Y1 - 2011/11
N2 - An 84 year-old man with history of recurrent dizziness presented with first degree atrio-ventricular block (1° AVB) and periods of 2:1 AVB. An electrophysiological study revealed a predominant 1:1 AV conduction with markedly prolonged AH interval and frequent His bundle extrasystoles (H). A properly timed H could induce periods of 2:1 AV nodal block and 1:1 AV conduction could only resume following another properly timed H. Procainamide suppressed H. However, because of persistence of the patient symptoms, a permanent pacemaker was eventually inserted. The case illustrates a hitherto not described manifestation of H.
AB - An 84 year-old man with history of recurrent dizziness presented with first degree atrio-ventricular block (1° AVB) and periods of 2:1 AVB. An electrophysiological study revealed a predominant 1:1 AV conduction with markedly prolonged AH interval and frequent His bundle extrasystoles (H). A properly timed H could induce periods of 2:1 AV nodal block and 1:1 AV conduction could only resume following another properly timed H. Procainamide suppressed H. However, because of persistence of the patient symptoms, a permanent pacemaker was eventually inserted. The case illustrates a hitherto not described manifestation of H.
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U2 - 10.1007/s10840-011-9542-8
DO - 10.1007/s10840-011-9542-8
M3 - Article
C2 - 21327490
AN - SCOPUS:84855578935
SN - 1383-875X
VL - 32
SP - 121
EP - 123
JO - Journal of Interventional Cardiac Electrophysiology
JF - Journal of Interventional Cardiac Electrophysiology
IS - 2
ER -