Position of Epicardial Patch Electrodes for Implantable Defibrillation Significantly Affects Shock Strength Requirements
نویسندگان
چکیده
منابع مشابه
Effect of epicardial patch electrodes on transthoracic defibrillation.
To improve survival rates in patients undergoing surgical ablative procedures for malignant ventricular tachycardia (VT), a frequent practice is to implant epicardial patch electrodes at the time of map-guided surgery. After operation, patients with inducible VT often receive an automatic internal cardioverter/defibrillator (AICD) implant, whereas patients with noninducible VT usually do not. I...
متن کاملSubcutaneous ICD lead position affects defibrillation threshold
Introduction Subcutaneous implantable cardioverter-defibrillators (S-ICD) provide an alternative to traditional transvenous implantable cardioverter-defibrillators (TV-ICD) and avoid complications associated with intravascular access and leads. They are highly effective in detecting and treating ventricular arrhythmias, with comparable inappropriate shock rates. Use of S-ICD is anticipated to i...
متن کاملComparison of defibrillation probability of success curves for an endocardial lead configuration with and without an inactive epicardial patch.
OBJECTIVES This study sought to assess the effect of passive "bystander" epicardial electrodes on defibrillation efficacy. BACKGROUND We hypothesized that an inactive epicardial patch placed in an area of low potential gradient from an endocardial electrode shock might affect defibrillation efficacy through its effects on the shock field and the underlying potential gradient. METHODS We stu...
متن کاملDefibrillation Threshold for Implantable Defibrillators
Background The time constant of truncated exponential pulses used with implantable defibrillators is determined by the output capacitor size and defibrillation pathway resistance. The optimal capacitor size is unknown. Methods and Results This study compared defibrillation threshold (DFT) for standard 120-,uF capacitors (DFT120) and smaller 60-,gF capacitors (DFT60) at implantation of cardiover...
متن کاملImproved defibrillation thresholds with large contoured epicardial electrodes and biphasic waveforms.
A reduction in the shock strength required for defibrillation would allow use of a smaller automatic implantable cardioverter-defibrillator and would reduce the possibility of myocardial damage by the shock. Most internal defibrillation electrodes require 5 to 25 J for successful defibrillation in human beings and in dogs. In an attempt to lower the shock strength needed for defibrillation, we ...
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ژورنال
عنوان ژورنال: Academic Emergency Medicine
سال: 1995
ISSN: 1069-6563,1553-2712
DOI: 10.1111/j.1553-2712.1995.tb03083.x