膜型酸素富化器(MO-40)の有用性に関する臨床的検討 : 心臓手術後低濃度酸素吸入に果たす役割について

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An oxygen concentrator (MO-40) developed by Matsusita Seiko, Co. Ltd. was applied clinically to 32 patients undergoing open heart surgery.The purpose of this study was to examine if it could serve as an oxygen source for low oxygen therapy in the postoperative respiratory care.Sixteen patients had acquired valve disorder, 9 had ischemic heart diseaes, 5 had congenital cardiac anomalies and the remaining two had miscellaneous illnesses. Age of the patients ranged from 13 to 68 years (mean 45).After the intratracheal tube was removed, 100% oxygen was supplied through either facemask or nasal canula in 3-5 L/min. for 30-60 min.Thereafter, 40%-concentrated oxygen was provided from MO-40 in the same manner in 5-7 L/min. for about 30 min. Finally, the patient was allowed to breathe room air (21% oxygen) for 30 min.There were little changes of heart rate, blood pressure and respiratory frequency : all of these parameters were within normal physiologic range throughout study. PaO_2 values were normal in both 100% and 40% oxygen therapy : 142±33 torr and 103±24 torr, respectively. By contrast, room air breathing yielded 75±33 torr in average, which was significantly lower (p<0.001) than that obtained from 40% oxygen.None of the patients complained unfavorable feeling in use of MO-40. In all but 1 patients (97%), the oxygen concentrator (MO-40) was proved useful, with the latter having decreased cardiac function. These results indicate that the oxygen concentrator can be safely and easily utilized for patients who may require low rather than high oxygen therapy.
日本医療機器学会の論文
1984-01-01

膜型酸素富化器(MO-40)の有用性に関する臨床的検討 : 心臓手術後低濃度酸素吸入に果たす役割について

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