It was reported that the autopulse lithium ion battery (sn (b)(4)) was placed in the autopulse platform for patient use during the cardiac arrest.The platform performed the compressions during the patient use; however, per reporter, the running time was less then expected.No patient harm or consequences reported on this event.No additional information was provided.
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The reported event was confirmed during archive data review; however was not reproduced during functional testing of the autopulse lithium ion battery (sn (b)(4).A root cause was attributed to battery mismanagement.The battery was received with no physical damage, and four green leds illuminated on the battery status indicator.The battery was functionally tested by inserting into a good known reference mcc and was able to successfully charge.After charging, the battery illuminated four green led on the battery status indicator.The battery was also tested by inserting it in a good known reference autopulse platform using a large resuscitation test fixture.The platform performed continuous compressions for 40 minutes without any issue observed.Review of the retrieved archive data revealed that the battery was last successfully charged in the autopulse multi chemistry charger (mcc) on (b)(6) 2018.It was noted that two charging cancellations were recorded on (b)(6) 2018, the reported event date.The autopulse power system user guide states that "after every use, at the beginning of a shift, or at least once every 24 hours, the battery in the autopulse should be replaced with a fully charged battery." a fully charged autopulse lithium ion battery left in a zoll autopulse platform for an extended period of time will eventually discharge below its minimum operating voltage.A fully discharged battery will not be able to charge in the mcc.
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