Reason/Issue |
The following problems were found during internal testing:
If Electrical Fast Transits (EFT) noise is injected into the monitor/defibrillator via AC mains power, and the monitor/defibrillator is connected to and receiving ECG signals from an auxiliary bedside monitor with an M1783A/M5526A 12 pin Sync Cable (8/24 feet) via the monitor’s ECG Out port, then:
1. When using a sync cable with the HeartStart MRx or HeartStart XL, EFT noise can be mistaken as an R-wave. If this occurs when performing synchronized cardioversion, there is a potential for inducing ventricular fibrillation if shocks are synchronized to EFT noise instead of the patient’s actual R-wave.
2. When using a sync cable with the HeartStart XL+, EFT noise can disable ECG monitoring, and potentially interrupt demand mode pacing, leading to a possible delay in therapy. A power cycle is required to resume ECG monitoring, however, fixed mode pacing is not impacted by this issue. |