The reported event occurred in usa.The following complaint information was provided to maquet cardiopulmonary: "the following disposable had problems reading pressures over the weekend.We attempted to re-zero the pressures and change out the pressure cord but they didn¿t get any better.The occurrence happened with the following disposable lot 30002040458 on the following cardiohelp ( 90410351).They stated that this was a covid patient and the hls would not be returning.The product was exchanged, all pressures were fine after they changed out the hls set." no harm was reported.The affected product was not available for technical laboratory investigation of the manufacturer.Thus it was not possible to determine the exact root cause of the reported failure.Despite several attempts no information about which pressures were affected exactly and which values were measured was provided.Additionaly the customer did not provide the correct lot # of the product.The lot # provided is invalid and was not traceable in our system.Thus it was not possible to perform a dhr review.However, the reported failure "problems reading pressures" can be linked to the following most probable cause according to our risk management file: -wrong pressure measurement due to malfunction of the pressure sensor based on the investigation results it was not possible to confirm the reported failure "problems reading pressures".The occurrence rate was calculated for the reported issue and it was determined that this is not a systemic issue.Therefore, no remedial action is 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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