肺的基本功能是维持氧的摄入和CO_2的排出。麻醉前肺功能的临床估价就是要估计病人的疾病本身以及麻醉和手术会在多大程度上影响肺的功能。尽管O_2和CO_2在组织中的交换也很重要,而且肺与组织中的这二种交换也相互关联,但本文的重点主要放在对肺功能的估价上。全面地进行临床估价,以查出影响其他呼吸环节的疾病当然也是必须的,如心脏和中心循环,局部器管循环和血容量,以及影响O_2和血红蛋白结合的因 The basic function of the lungs is to maintain oxygen intake and CO 2 excretion. The clinical assessment of pre-anesthesia lung function is to estimate the patient’s disease itself and the extent to which anesthesia and surgery will affect lung function. Although the exchange of O 2 and CO 2 in tissues is also important, and the two exchanges between lung and tissue are also interrelated, the focus of this article is primarily on the assessment of lung function. It is of course also necessary to conduct a comprehensive clinical evaluation to identify diseases that affect other respiratory processes, such as cardiac and central circulation, local circulatory and blood volume, as well as factors that influence the binding of O_2 and hemoglobin