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Unexpected, Dramatic Improvement in Atrioventricular Conduction During Pacemaker Implantation for Apparent Complete Heart Block
Author(s) -
DIZON JOSE',
WANG HUIJIAN,
BIVIANO ANGELO,
GARAN HASAN
Publication year - 2007
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2007.00826.x
Subject(s) - medicine , cardiology , atrioventricular block , heart block , permanent pacemaker , bradycardia , electrical conduction system of the heart , pr interval , anesthesia , electrocardiography , heart rate , blood pressure
We describe the case of a 29‐year‐old man with complete heart block after aortic and mitral valve surgery for bacterial endocarditis. Prior to pacemaker implantation, the patient had sinus bradycardia with third degree atrioventricular (AV) block. During testing of the atrial lead, the patient manifested intact AV conduction with a constant PR interval, which was robust up to 120 beats/min. This case represents a dramatic example of unexpected, improved AV conduction, perhaps a result of loss of Phase IV block .