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我们通过对移居中度高原的平原人退休后返平原(移居者)短期内(进入平原10天)和长期定居后(一年以上)的肺功能分别进行对比观察。发现移返者进入平原后短期内MV,FVC,PEF,FEF_(75)有明显下降(P<0.05),其余肺功能参数均有下降趋势,长期定居后肺功能介于留居高原和世居平原者之间,其中PEF,FEF_(75)和D_(CO)SB明显高于平原世居组(P<0.05)。说明中度高原对移返者呼吸系统解剖结构的影响在脱离高原后不能完全消除,这也可能与进入老年期呼吸系统退行性变明显而不易复原有关。
We compared the lung function in the short term (10 days into the plains) and after long-term settlements (more than 1 year) by returning to the plains (settlers) after they retired to the plateau in the moderate plateau. It was found that MV, FVC, PEF, FEF 75 decreased significantly in the short term (P <0.05), while the rest of the parameters of pulmonary function decreased. After long-term colonization, lung function was in the middle of the plateau PEF, FEF_ (75) and D_ (CO) SB were significantly higher than those in plain group (P <0.05). It shows that the effect of moderate plateau on the anatomy of respirators can not be completely eliminated after the plateau is detached, which may also be related to the deteriorating of the respiratory system degeneration.