1. Inappropriate ICD shocks do not induce pro-arrhythmic electrocardiographic changes in men.
- Author
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Vandenberk, Bert, Hnatkova, Katerina, Goovaerts, Griet, Garweg, Christophe, Ector, Joris, Van Huffel, Sabine, Malik, Marek, and Willems, Rik
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CARDIAC pacing , *ELECTROCARDIOGRAPHY , *CARDIOMYOPATHIES , *DISEASES in men , *SHOCK (Pathology) , *ARRHYTHMIA diagnosis , *CORONARY heart disease complications , *TREATMENT of cardiomyopathies , *ACTION potentials , *ARRHYTHMIA , *ELECTRIC countershock , *ELECTROCONVULSIVE therapy , *HEART beat , *HEART conduction system , *IMPLANTABLE cardioverter-defibrillators , *RISK assessment , *TIME , *PRODUCT design , *TREATMENT effectiveness , *MEDICAL equipment reliability , *DIAGNOSIS , *EQUIPMENT & supplies - Abstract
Objectives: Longer-term electrocardiographic effects of multiple inappropriate ICD shocks were investigated to study their hypothesized pro-arrhythmic potential.Design: Thirteen male patients with ischemic cardiomyopathy who received ≥2 inappropriate shocks within 24 h and for whom 12-lead ECGs were available both before and within 72h after the inappropriate shocks were analyzed. Exclusion criteria included continuous ventricular pacing, underlying AF, events within 6 weeks after lead implantation and concomitant acute medical problems.Results: A total of 149 inappropriate shocks (mean 11 ± 19) were received. There were no significant differences in any of the measured intervals or morphological indices, nor was there a correlation between the "before-after" differences and the number of shocks received. Non-significant changes showed Percentage of Loop Area increase and relative T-wave Residuum decrease while the opposite changes have previously been associated with arrhythmic risk.Conclusions: No potentially pro-arrhythmic electrocardiographic changes were found 19 h after multiple inappropriate shocks. [ABSTRACT FROM AUTHOR]- Published
- 2017
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