METHODS:Nitrate reductase method was used to detect the NO content of the pati ents on the admission day,the 3rd day,7th day,and 21st day after onset. The resul ts were compared with that of the control group.

• 方法:采用硝酸还原酶法分别测定研究对象入院时、发病后的第3,7,21天的一氧化氮含量,并与健康体检者进行对照。