Inappropriate therapy associated with certain right ventricular (RV) lead complications may occur more frequently if the Respiratory Sensor is programmed On. For any implantable defibrillator, delivery of appropriate therapy is dependent upon lead system integrity. Conversely, if any component of the defibrillator system is compromised, appropriate therapy cannot be assured. For example, certain RV lead complications (such as chronic lead fracture and acute lead connection issues) can result in inappropriate shocks or anti-tachycardia pacing, and/or inhibition of pacing. Boston Scientific has recently determined that if such RV lead complications were to occur with the Respiratory Sensor programmed On, additional oversensing may occur, thereby increasing the probability of inappropriate therapy. When the Respiratory Sensor is Off, this advisory does not apply.
Select this link for additional information regarding Respiratory Sensor Oversensing (March 23, 2009) or contact your local Boston Scientific CRM representative, United States Technical Services at 1.800.CARDIAC (227.3422) or European Technical Services at +32 2 416 7222.
A Closer Look articles provide educational/training information on a variety of topics to better understand the function of Boston Scientific CRM products. Articles are now available at bostonscientific.com and bostonscientific-international.com (A4 format and translations, where available).
Published April 10, 2009
