论文部分内容阅读
慢性呼吸系统疾病的运动限制因素主要是肺通气功能和肺内气体交换障碍。反映氧化能力变化参数有血液及组织中氧分压(PaO_2)降低及通气量变化。反映通气限制的参数有呼吸困难指数(VEexc/MVV)和换气当量(VEexc/VO_2exc)。另一方面,血中氧分压低下对颈动脉窦,肺血管组织,呼吸肌产生各种各样影响。
The limiting motor limitations of chronic respiratory diseases are mainly pulmonary ventilation and intrapulmonary gas exchange disorders. Parameters that reflect changes in oxidative capacity include decreased PaO 2 and changes in aeration in the blood and tissues. The parameters that reflect the ventilation restriction are the VEexc / MVV and the VEexc / VO_2exc. On the other hand, low partial pressure of oxygen in the blood of the carotid sinus, pulmonary vascular tissue, respiratory muscles produce a variety of effects.