It was reported that when plugging in the pressure cable there was no venous pressure reading (pven).It was just a dash on the screen.The pressure cable was exchange but the failure did continue.It occured during priming prior to patient treatment.The product then had to be used on the patient as the customer don't carry a spare hls set on retrieval.The circuit was exchanged when the customer got back to the base.No harm was reported.The affected product was not available for technical investigation of the manufacturer.Thus it was not possible to determine the exact root cause of the reported event.However this failure could be linked to our risk management file hls set advanced (dms#(b)(4) and the following most probable cause could be associated with the reported failure: wrong pressure measurement due to malfunction of the pressure sensor.The production records of the affected hls modules (batch # 3000180543 ) were reviewed.Following tests are performed according to the bop as a 100 % inspection: gluing of sensors.Gluing of cover for temperature and pressure sensor.Functionality test hls module (sensors and pump).According to the final test results, all oxygenators passed the tests as per specifications.Production related influences are unlikely to have contributed to the reported failure.Based on the above mentioned investigation results the reported failure "no venous pressure reading" could be confirmed.The occurrence rate regarding the above complaint is below the acceptance rate.Thus, no remedial action required.The occurrence rate related to the reported issue is currently being monitored as part of maquet cardiopulmonary¿ s trending program and additional investigations or corrections will be implemented in case of adverse trending.
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