HeartStart MRx Defibrillator/Monitor with Q-CPR Meter option.The HeartStart MRx monitor/defibrillator has an option (Q-CPR Meter) to provide visual and audible feedback to the rescuer on the quality of CPR. The Q-CPR option offers real time measurement and corrective feedback on the rate, depth and complete release of compressions, ventilations rate and lack of CPR activity in accordance with current CPR guidelines. The Q-CPR option is contraindicated as follows: *The Q-CPR option is contraindicated for use on neonatal and pediatric patients (under 8 years of age or weighing less than 25 kg). *The Q-CPR option is not for use when CPR is contraindicated.

Reduced sensitivity in the force measurement sensor can result in inaccurate feedback to the user on how well he or she is releasing pressure after each chest compression. This can result in incomplete release of chest compression, which will reduce CPR effectiveness.

Philips issued an "Urgent Medical Device Recall notification/Field Safety Notice" dated April 2010 to all consignees. The letter described the issue, how to identify affected devices, and required actions. The consignees were instructed to remove affected devices from service. Philips will contact consignees to arrange on-site replacement of affected meters with meters containing revised labeling and calibration software. The new meters will indicate that meter recalibration is required after approximately 50,000 compression cycles. Consignees returning devices to Philips for routine recalibration will receive free replacement. All CPR meters will be replaced with re-designed meters when they become available. For questions or assistance in notifying accounts about this recall, contact Philips at 1-800-722-9377.