Why the study?
Does reversing the initial phase polarity (RV+ vs RV-) improve defibrillation thresholds in patients receiving an implantable cardioverter defibrillator?
Population
22 patients with ventricular tachycardia or ventricular fibrillation receiving an implantable cardioverter…
Comparison
Right ventricular positive initial phase… vs Right ventricular negative initial phase…
Design
RCT, randomized fashion
Follow-up
predischarge
Authors
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Reversing initial phase polarity does not improve DFTs; confirms no benefit and poor reproducibility at predischarge.
Does reversing the initial phase polarity (RV+ vs RV-) improve defibrillation thresholds in patients receiving an implantable cardioverter defibrillator?
Reversing initial phase polarity does not significantly improve defibrillation thresholds, and any individual benefit observed at implant is poorly reproducible at predischarge testing.
Narasimhan et al. (1999) studied this question.
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