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10例急性呼吸衰竭的患者持续应用机械通气。由于有大量的分泌物和肺不张,阻碍了氧合作用及肺泡通气,作了纤维光束支气管镜检查,吸出痰液并作生理盐水灌洗。在检查前20分钟,检查期间及检查后90分钟,分别抽取动脉血测定氧和二氧化碳分压及pH值。吸入氧的浓度保持恒定。结果发现检查期间动脉血氧分压和二氧化碳分压各别平均升高10.0和5.2毫米汞柱,pH值平均降低0.06。5例有肺段或肺叶不
Ten patients with acute respiratory failure continued to use mechanical ventilation. Due to a large amount of secretions and atelectasis, hindering the oxygenation and alveolar ventilation, a fiber optic bronchoscopy was performed, aspiration of sputum and lavage of saline. Arterial blood was taken for oxygen and carbon dioxide partial pressure and pH values during the first 20 minutes, during the test and 90 minutes after the test. The concentration of inhaled oxygen remains constant. The results showed that during the examination, arterial partial pressure of oxygen and carbon dioxide partial pressure respectively, an average increase of 10.0 and 5.2 mm Hg, pH value decreased by 0.06.5 cases of pulmonary segment or lobe