气象因素对微循环的影响

探讨气象因素影响脑血管病发病的机理。方法：按气象条件设置的不同将４０只家兔均分为八组：对照组、高气温组、低气温组、高气压组、高湿度组、低湿度组、复合气象１组（高温＋高湿）和复合气象２组（高压＋低温）。每组分别观察肠系膜微循环的变化。结果：低温组、高压组及复合气象２组表现为微血管收缩、毛细血管开放减少，尤以复合气象２组明显，而高温组、高湿组和复合气象１组的变化则相反，表现为微血管扩张、毛细血管大量开放、血液瘀滞、血流缓慢、血管周围有渗出，低湿组与对照组相比基本无变化。结论：气象条件可以引起肠系膜微循环的变化，这种变化与临床拟合较高，提示微循环的变化是气象因素影响脑血管病发病的一个重要途径。

Changes of Microcirculation Affected by Meteorological Factors

To study the mechanism of cerebrovascular diseases increasedby meteorological factors. Methods: 40 rabbit were divided 7 meteorolosical factors sroupe and normal control group (all n ~ 5 ), included hyper--air temperature, hyper--air pressure, hyper relative humidity, hypo air temperature, bypomrelative humidity, mixed hyper--air temperature and hyper--relative humidity, mixed hyper air pressure and hypo--air temperature. The mesenteric micro-circulation of all grouPS were observed. Results: Microartery contractions andcapillary opening teduction were occured in three groups: hyper air pressure,hyPO air temperature and mixed hyper--air pressure and hypo--air temperature.The contrary changes of microcirculation were observed in three groups: hyperair temperature, hyper--relative humidity and mixed hyper--air temperature andhyper relative humidity. No chanses were found in hypo--relative humidity.Conclusion: The cha-"ges of microcjrculation by meteorological factors were Parrelled the clinical observation. It is suggest that rneteorological factors affect microcirculation through which cerebrovascular diseases may occurs.