2005096703 A1 abstract an implantable cardiac rhythm management device for delivering anti tachyarrhythmia therapy is provided with a temporary disablement feature so that the delivery of anti tachyarrhythmia therapy may be conveniently disabled and re enabled the feature is particularly useful to patients who are undergoing imaging procedures or surgical procedures where electro cauterizing instruments may cause inadvertent triggering of cardioversion defibrillation shocks and or anti tachycardia pacing application_number US 69799903 A description the present invention may be embodied by an implantable cardiac rhythm management device for delivering anti tachyarrhythmia therapy through one or more electrical stimulation channels which is configured for temporary disablement of the anti tachyarrhythmia therapy when the need arises below is a description of an exemplary hardware platform followed by a detailed description of different techniques for implementing the temporary disablement feature cardiac rhythm management devices such as icds and pacemakers are typically implanted subcutaneously on a patient 39 s chest and have leads threaded intravenously into the heart to connect the device to electrodes used for sensing cardiac activity delivering pacing pulses and or delivering defibrillation shocks fig1 depicts an implantable cardioverter defibrillator device for treating atrial and ventricular tachyarrhythmias that also incorporates functionality for pacing the atria and or the ventricles in a bradycardia pacing mode the device includes a subcutaneously implantable housing or can 60 for enclosing the electronic circuitry of the device and a pair of leads l 1 and l 2 having electrodes incorporated therein.