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目的：观察高血压及红细胞压积对高原地区世居者（藏族）和移居者（汉族）脑梗死发病的影响。方法回顾性分析比较高原地区146例藏汉民族脑梗死患者的年龄、性别、血压和红细胞参数，了解它们对不同民族患者脑梗死发生的影响。结果藏族患者发病平均年龄明显大于汉族患者，汉族男性患者比例显著高于藏族（P＜0．05）。2组高血压差异无统计学意义（P＞0．05）。汉族患者的平均血红蛋白量和红细胞压积显著高于藏族患者（P＜0．05）。结论红细胞增多对高原汉族人群脑梗死的发生有重要意义。“,”Objective To analysis the effect of high blood pressure and hematocrit in plateau cerebral infarction be -tween permanent high altitude native and settlers .Methods Retrospective analysis the age ,sex,blood pressure,RBC in 146 cases patients with plateau cerebral infarction .Results Tibetan onset patients older than Han ,the age of Tibetan was longer than Han.The men proportion of Tibetan was hihger than that in Han ,the difference was statistically significant (P0.05).The average hemoglobin and hematocrit of Tibetan was higher than that of Han,the difference was statistically significant(P<0.05).Conclusion Hypertension is an important risk factor for primary cerebral infarction .Polycythemia is important to patients with plateau han population cerebral infarction .