total death rate

Compare the blood gas alleosis of two group, observe the the time of invasive mechanical ventilation and total ventilation; days in RICU; re-intubation rate; death rate and the incidence of Ventilators-Associated Pneumonia ( VAP) of two groups.

观察两组病例治疗前后血气分析变化情况；有创和总机械通气时间；住RICU天数及复插率、院内死亡率、呼吸机相关性肺炎VAP（Ventilators-Associated Pneumonia）的发生情况和总住院费用。

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In the mini invasion method group, the total death rate was 17 3%, those with 30 ml of hematoma volume had 28 2% of death rate, when hematoma volume was over 70 ml the death rate was 44 4%.

Ⅱ组住院总病死率为173%，出血量30ml以上的病死率为282%，大于70ml的病死率为444%。

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