implantable cardioverter defibrillator post-adjustment left ventricular pacing threshold elevated due to lead malfunction
implantable cardioverter defibrillator post-adjustment left ventricular pacing threshold elevated due to lead malfunction
implantable cardioverter defibrillator post-adjustment left ventricular pacing threshold elevated due to lead malfunction
implantable cardioverter defibrillator post-adjustment left ventricular pacing threshold elevated due to lead malfunction