(b)(4).The device history records for the returned sam 350p device were reviewed and this confirmed that all manufacturing and quality checks and tests had been successfully completed prior to the dispatch of the sam 350p from heartsine technologies, (b)(4) on (b)(6) 2016.The history log for this device showed that the pad-pak was first installed on (b)(6) 2016 and had performed to specification, alongside random manual power ons, up to and including the last log entry on the (b)(6) 2017.During the above period, the device was reported as being used in an sca on the (b)(6) 2017.There were 3 very short events.They appear to be simulated tests.The events were recorded on: (b)(6) 2016.A fourth patient event occurred on (b)(6) 2017.The event was 11 minutes 56 seconds.The patient did not have a shockable rhythm throughout.The event appeared to be sinus rhythm.A shock was not delivered but due to electrode artefact the algorithm reanalysed for a few seconds to ensure there was no shockable rhythm present.Chest compressions were administered intermittently at varying rates from around 120 cpm to 132 cpm.The electrodes appeared to become disconnected or removed at 4 minutes 53 seconds and there was no viewable ecg for the remainder of the event.During the time that an ecg was available for analysis it can be concluded that the device algorithm performed to specification.The user also pressed the on/off button on the device on a number of occasions towards the end of the event and on each occasion the device warned the user that the on/off button had been pressed.This is a failsafe mechanism in the device to warn the user that the on/off button may have been pressed unintentionally.The user then removed the pad-pak from the device in order to shut it down however the device was unable to enter the shutdown sequence and logged the pad-pak removal as a low battery in the memory log.
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