Results There was no obvious difference in effect of bleeding control between two groups(P>0.05), and there were significant differences in VAP happening rate(P<0.01).
结果治疗组和对照组间止血效果差异无显著性（P＞005），而VAP的发生率差异有非常显著性（P＜001）。
Results There was no obvious difference in effect of bleeding control between two groups(P>0.05), and there were significant differences in VAP happening rate(P<0.01).
结果治疗组和对照组间止血效果差异无显著性（P＞005），而VAP的发生率差异有非常显著性（P＜001）。
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