【摘要】 成年兔10只,麻醉、制动。于低氧前、后30及60分采动脉和混合静脉血,进行血气分析。低氧30及60分时:吸入气至肺泡气的氧运能力与对照相比无明显区别(P>0.05),而肺泡气至动脉血及动脉血至混合静脉血的氧运能力却显著提高(P<0.01)。表明在低氧条件下,由于气体交换系统氧运阻力的降低,使运氧能力明显提高,从而相对降低了海拔高度,无疑对于高原低氧具有十分重要的适应意义。更多还原

【Abstract】 The MO₂—specific conductances MO₂—SC)at 3 different levels(air—alveolar gas（A）,alveolar gasarterial blood（a）and arterial blood mixed venous blood（?）in oxygen cascade were studied in 10 rabbits under acute hypoxia（simulated altitude 7000m）,It was observed that the ventilatory MO₂—SC during acute hypoxia did not change,which suggested that the ventilation response played a great role in increasing MO₂—SC at acute hypoxia.The complex tranport MO₂—SC.between A and a increased remarkably probably owing to high lung —diffusing,lower arterial—venous shunt and homogeneity in the distribution of alveolar ventilation and blood perfusion.The circulatory MO₂—SC between a and （?） also significantly higher than the control.The result showed that the increased MO₂—SC was seen at altitude—hypoxia in the animals. We considered that the MO₂—SC would be a good comprehensive index to evaluate the organism adaptability to altitude hypoxia.更多还原