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Patient identifier: requested, not provided.Date of birth: requested, not provided.Weight: requested, not provided.Ethnicity: requested, not provided.Race: requested, not provided.Implanted date: device was not implanted.Explanted date: device was not explanted.Phone number: requested, unknown.The actual device was not returned; therefore, an evaluation of the actual device was unable to be conducted.Review of the manufacturing record and shipping inspection record of the actual sample had no anomalies was found.Review of the past complaint file of the involved product code/lot revealed no other similar reports found.According to the investigation result, no anomalies were found in the manufacturing records.As a cause of occurrence in this case, from the description of the event that the poor oxygenation occurred at that time of unclamping, it was inferred that blood with low so2 might have flowed in the oxygenator.However, since the inspection of the actual sample was not possible, in addition, circulation condition and other information were unavailable, it was not possible to clarify the cause.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.Control paco2 by changing the total gas flow.To decrease paco2, increase total gas flow.To increase paco2, decrease total gas flow.Upon patient rewarming, adjust o2 concentration, gas flow rate and blood flow rate by increasing them as needed based on an increasing in patient's metabolism.Failure to adjust the gas supply and the blood flow rate appropriately may cause insufficient o2 supply needed or the amount of the patient's gaseous metabolism.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 20 l/min for 10 seconds.Do not repeat this flushing technique, even if oxygenator performance is not improved.(warning) terumo medical products (tmp) (importer) registration no.(b)(4) is submitting this report on behalf of ashitaka factory of terumo corporation (manufacturer) registration no.(b)(4).
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