Tachycardia-dependent bilateral bundle branch block in ischemic heart disease with systolic dysfunction: case report and review of prognostic implications

A proper characterization of frequency-dependent bundle branch blocks can provide useful prognostic information in some clinical situations. Often, this physiological event may be due to an extensive damage of infrahisian system, which poses a high risk of developing advanced atrioventricular block...

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Bibliographic Details
Published in:Medwave 2015-10, Vol.15 (9), p.e6285-e6285
Main Authors: Ferrando-Castagnetto, Federico, Vidal, Alejandro, Ricca-Mallada, Roberto, Nogara, Romina, Marichal, Pablo, Martínez, Fabián
Format: Article
Language:eng ; spa
Subjects:
Bundle-Branch Block - diagnosis
Bundle-Branch Block - physiopathology
Exercise Test
Humans
Male
Middle Aged
Myocardial Ischemia - physiopathology
Prognosis
Systole
Tachycardia - diagnosis
Tachycardia - physiopathology
Ventricular Dysfunction, Left - diagnosis
Ventricular Dysfunction, Left - physiopathology
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Description
Summary:A proper characterization of frequency-dependent bundle branch blocks can provide useful prognostic information in some clinical situations. Often, this physiological event may be due to an extensive damage of infrahisian system, which poses a high risk of developing advanced atrioventricular block requiring pacemaker implantation. We describe the case of a 62 year-old man with chronic ischemic heart disease who exhibited alternating tachycardia-dependent bundle branch block during stress test. We discuss the main prognostic implications of this unusual event in the context of systolic dysfunction.
ISSN:0717-6384
0717-6384
DOI:10.5867/medwave.2015.09.6285