Philips received a complaint on the tempus ls indicating that the device did not recognize the leads.Case escalated to technical investigation.Investigation performed on log- and rescue-files by research & development department.The supported rescue-files and the full disclosure form showed the same data.During the whole intervention no pads where attached, expect at 13:29:30-13:29:23 (utc-4) (rescue-file 19:29:30-19:29:31 (utc+2)).In the rescue-file ecg lead ii was recorded from 19:30:22-19:32:52.In the full disclosure from tempus pro the same ecg was recorded (13:30:22-13:32:52).After this time both files do not show any ecg lead ii signals.On 14.04.2022 the device was only used in manual mode (4) and therefore the connected ecg on lead ii was never showed on the display, but it seems to be transmitted to the tempus pro (device of rdt philips).Based on the provided event description, it assumed that the hcp was expecting the tempus ls manual to display an ecg signal from the ecg leads.The ecg leads as per specification are only displayed in monitor or pacer mode.Based on these results, a use error can be assumed.The data entered in this complaint record will be utilized for product quality and safety improvements per the post market surveillance and risk management processes.The investigation concludes that no further action is required at this time.If additional information is received, the complaint file will be reopened.
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