Open AccessUnmasking of infra‐Hisian conduction abnormality by intravenous isoproterenol during electrophysiology study for syncope
Author(s) -
Bera Debabrata,
Majumdar Debdatta,
Mukherjee Sanjeev S.,
Majumder Suchit,
Kathuria Sanjeev
Publication year - 2022
Publication title -
journal of arrhythmia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 21
eISSN - 1883-2148
pISSN - 1880-4276
DOI - 10.1002/joa3.12663
Subject(s) - medicine , syncope (phonology) , cardiology , electrophysiology study , abnormality , bradycardia , left bundle branch block , electrophysiology , anesthesia , ablation , heart rate , catheter ablation , blood pressure , heart failure , psychiatry
Recurrent unexplained syncope in the background of bundle branch block (BBB) often requires a pacemaker. But the decision‐making for pacemaker is difficult in case of single episode of syncope with intermittent bundle branch block. We encountered one such case with intermittent LBBB, where the results of invasive EP study were even normal, until intravenous isoproterenol unmasked the infra‐Hisian disease during decremental atrial pacing.