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Selective Dysfunction of Ventricular Electrode-Endocardial Junction Following DC Cardioversion in a Patient with a Dual Chamber Pacemaker.
- Source :
- Pacing & Clinical Electrophysiology; Feb1997, Vol. 20 Issue 2, p364-365, 2p
- Publication Year :
- 1997
-
Abstract
- A patient with a dual chamber pacemaker received two transthoracic (anterior-anterior paddle position) shocks for VF. Subsequent analysis of stimulation thresholds revealed a marked rise in the ventricular threshold only. Later, she received three additional shocks (anterior-posterior paddle position) during electrophysiological study to terminate episodes of induced VT. Following these, the ventricular stimulation threshold was > 10 Vat 2.0 ms. The selective damage at the ventricular site in this patient led us to carry out in vitro studies that revealed a preferential shunting of high electrical energy into the ventricular lead, as compared to the atrial lead, following a DC shock. These observations may explain the selective pacing malfunction observed in our patient. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01478389
- Volume :
- 20
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Pacing & Clinical Electrophysiology
- Publication Type :
- Academic Journal
- Accession number :
- 17425619
- Full Text :
- https://doi.org/10.1111/j.1540-8159.1997.tb06184.x