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长期进行人工通气的患者,很易发生背侧广泛性肺不张,即使采用长呼吸(Sigh)、呼气末正压通气等方法,预防和治疗效果都不理想。现改用俯卧位进行通气治疗,并就其有效性进行探讨。对象和方法受试者为住入重症监护病房的7例不同器官衰竭、呼吸功能不全的患者,卧床时间4～27天,俯卧位持续时间8～163小时。在体位变换前、后和仰卧位恢复后,分别测定了肺功能,以呼吸指数(RI:A-aDO_2/PaO_2)作为肺的氧化能力指标,用通气不全指数[每分钟换气量(L/min)×PaCO_2/体重(kg)/4]作为通气效率的指标,静
Long-term patients with artificial ventilation, prone to extensive dorsal atelectasis, even with long breathing (Sigh), positive end-expiratory ventilation and other methods of prevention and treatment are not satisfactory. Now switch to prone position for ventilation treatment, and to explore its effectiveness. Subjects and methods Subjects were admitted to intensive care unit of seven patients with different organ failure, respiratory insufficiency patients, bed time 4 to 27 days, prone position duration 8 to 163 hours. Pulmonary function was measured before and after the change of body position and recovery from supine position. Respiratory index (RI: A-aDO 2 / PaO 2) was used as an indicator of lung oxidative capacity. The index of ventilatory insufficiency (L / min) × PaCO 2 / body weight (kg) / 4] as an indicator of ventilation efficiency, static