中医肺气虚的循环—呼吸动力学机理

The Circulatory and Respiratory Dynamic Mechanisms of Lung Qi-Deficiency

气体的输运是中医气血运行的重要方面 ,本文通过对呼吸—循环系统的分析建立了一个描述气体在体内运行的血液动力学模型。通过对模型的分析研究我们发现心肺系统的参数异常改变会引起细胞代谢活动的外环境——组织液的氧分压的降低 ,进而导致各种肺气虚症状的出现。本模型可以定量解释肺气虚的一些生理学现象 ,并可以将临床关于肺气虚研究的各种发现结合起来 ,说明将组织液氧分压作为衡量肺气虚的指标是符合中、西医理论的 。

As the transportation of O 2 and CO 2 inside human body is an integrated aspect of Qi-blood transportation, a hemodynamic model is established based on the analysis of the respiratory and circulation system. The results of such model show that the abnormality of the circulatory and respiratory parameters always lead to a reduction of P O 2 (O 2 pressure) in tissue fluid, and then a Lung Qi-Deficiency Syndrome (QDS). This model can be used to quantitatively explain, to some extent, the physiological phenomena of Lung QDS, and could combine all the discoveries of in clinical researches, on Lung QDS. The measurement of P O 2 in tissue fluid as an index to analyze Lung QDS is in accordance with TCM and TMM (the theory of modern medicine). This model may provide a new approach in clinical research of Lung QDS.