A1: patient identifier: requested, not provided a2: age & date of birth: requested, not provided a4: weight: requested, not provided a5: ethnicity: requested, not provided a6: race: requested, not provided d6a: implanted date: device was not implanted d6b: explanted date: device was not explanted e1: establishment name: unknown e3: occupation: clinical engineer visual inspection of the actual sample upon receipt found no anomaly such as a breakage.The actual sample, after rinsed and dried, was tested for the o2 transfer and co2 removal performance in accordance with the product inspection protocol.It was confirmed to meet the factory's specifications.No anomaly was found.[bovine blood conditions] hb: 12 g/dl, temp.: 37°c., ph: 7.4, svo2: 65%, pvco2: 45 mmhg [circulation conditions] blood flow rate: 2 l/min and 1 l/min, v/q:1, fio2: 100% [o2 transfer volume] @2l/min: 116 ml/min., @1l/min: 65 ml/min [co2 removal volume] @2l/min: 99 ml/min., @1l/min: 57 ml/min review of the manufacturing record and the shipping inspection record of the actual sample found no anomaly.Search of the past complaint file of the involved product code/lot# found no other similar report was found.Based on the investigation result, the gas transfer performance of the actual sample after cleaning met the factory's specifications, and no anomaly was found.Since no anomaly was found in the actual sample, the cause of occurrence could not be clarified.Relevant instructions for use (ifu) reference: "start gas supply with v/q=1, and fio2=100%, then make adjustments based on blood gas measurements." "measure blood gases and make necessary adjustments as follows.A.Control pao2 by changing concentration of oxygen in ventilating gas using gas blender.-to decrease pao2, decrease fio2.-to increase pao2, increase fio2.B.Control paco2 by changing the total gas flow.-to decrease paco2, increase total gas flow.-to increase paco2, decrease total gas flow." "a phenomenon called wet lung may occur when water condensation occurs inside fibers of microporous membrane oxygenators with blood flowing exterior to the fibers.This may occur when oxygenators are used for a longer period of time.If water condensation and/or a decrease in pao2 and/or an increase in paco2 is noted during extended oxygenator use, briefly increasing the gas flow rate may improve the performance.Increase gas flow rate, to 5 l/min for 10 seconds.Do not repeat this flushing technique, even if oxygenator performance is not improved." terumo medical products (tmp) (importer) registration no.2243441 is submitting this report on behalf of ashitaka factory of terumo corporation (manufacturer) registration no.9681834.
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