论文部分内容阅读
气体通过肺泡—毛细血管膜进行交换的生理过程称弥散。该过程主要取决于肺泡—毛细血管膜状态、肺毛细血管血容量与血红蛋白和通气—灌注比值等因素。尽管目前肺弥散量的测定不能具体区分这些因素,有时对弥散量变化的机制亦难以说明,但它仍是一项敏感的试验,有助于对病理生理过程的了解,对估计某些实质性肺疾病的类型及严重程度可提供有价值的资料。现将我们对32例健康者和74例肺疾病患者所测肺一氧化碳弥散量(D_(LCO))总结如下。
Physiological process of gas exchange through the alveolar-capillary membrane called diffusion. The process depends mainly on alveolar-capillary membrane status, pulmonary capillary volume and hemoglobin and ventilation-perfusion ratio and other factors. Although the current measurement of lung diffusivity does not specifically distinguish between these factors and sometimes the mechanism of diffusional changes is difficult to explain, it is still a sensitive test to aid in the understanding of the pathophysiological process and to assess certain substantive The type and severity of lung disease can provide valuable information. We now 32 cases of healthy people and 74 cases of lung disease measured lung carbon monoxide dispersion (D_ (LCO)) are summarized below.