The device was not returned to zoll medical corporation, instead the clinical file was received.Review of the clinical file from the reported event concluded that the device worked as designed and within the limitations of the technology.In this analysis the algorithm determined that the presenting rhythm was non-shockable, this was due to the heart rate recorded which was an average of 132bpm during the analysis period.The analysis algorithm has a minimum threshold of 150bpm to determine a vtach to be shockable.The system determined result matches up with our analysis of the waveform.Analysis of reports of this type has not identified an increase in trend.
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