在增加泪液流量、改善角膜荧光染色、改善眼红和异物感方面，两组之间比较无统计学差异；
Tear film break-up time and dry eye symptom were statistically significant between two groups.
低氧血症、肾功能衰竭、手术与否以及是否应用有创呼吸机在两组之间比较差异有显著性（P<0.05或0.01）。
There was significant difference in hypoxemia, renal dysfunction, operation and using of respirator between groups(P<0.05 or P<0.01).
塞克硝唑片组实验室检查异常发生率为0.00%，替硝唑片组实验室检查异常发生率为2.08%，两组之间比较差异无统计学意义（P>0.05）。
The rates of abnormal results of laboratory test were 0.00% in trial group and 2.08% in control group. There were no significant differences between two groups in safety(P>0.05).
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