Device evaluation of monitor sn (b)(4) has been completed.The reported problem (patient death) was investigated.As received, the monitor passed incoming functional testing.During the incoming functional testing, a 1hz simulated normal sinus rhythm signal was applied to the device, followed by a 5hz simulated treatable arrhythmia signal which verified proper performance of the detection algorithm.During the transition to the 5hz signal, the device was confirmed to properly enter into a treatment sequence which includes a verification of the audio messaging and siren alarms, as well as a test of the pulse delivery circuitry.The pulse delivery circuitry test verified proper charging of the high voltage capacitors and proper delivery of five full energy 150j biphasic pulses.The functional testing confirmed proper response button functionality, ecg acquisition, detection algorithm performance, and pulse delivery functionality.Belt sn (b)(4) has not yet been recovered.Initial evaluation included a review of the downloaded data which did not indicate any device malfunction that would cause or contribute to the patient's death.
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