【摘要】 本文报告曾长期移居高原(4000m)重返低地后(2260m)8年心血管x线形态学变化。61名体力劳动者,按重返低地居住年限停留梯度,分析心血管四项指标改变,以探讨慢性缺氧所致肺动脉高压改变在重返低地后再适应过程中的可复性变化及其意义。结果表明:久居高原群体肺动脉段突度、右肺下动脉横径、降支与气管横径比值等三项指标参数重返低地后2年即已呈减小趋势,差异显著(P<0.01)。单纯肺动脉高压下山后恢复快、幅度大、时间短,高原性心脏病者恢复相对缓慢,但随重返低地后居住年限延长,可自行恢复,而高原性心脏病并发肺心病者则不然。更多还原

【Abstract】 The cardiovascular X—ray was Studied in 61 male workers returtned to 2260m lower land from 4 000m. The results suggested that the preminehce of pulmonary artery segment, diameter of right inferior pulmonary artery and the retio of descending branch to the diameter of trachea and decreasing when the workers returned to lower land from 4 000m altitude for 2 years, and there is a significant difference(P<0.01). The simple pulmonary hypertenssion is guickly restored, but lower in the high altitude heart disease and followong restoration with long time. However, the high altitude heart disease combined cot pulmonale is difficult recovery.更多还原