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对４６２例破伤风病人的临床资料进行分析表明，影响破伤风病人预后的因素主要是：①年龄：新生儿及老年病人病死率高达４８．４％，而其它年龄组仅为１８．４％，Ｐ＜０．００１；②潜伏期：潜伏期越短，病死率越高，潜伏期＜９天的病人，病死率为５４．５％，而＞９天者仅为５．６％，Ｐ＜０．００１；③起病期（即首次抽搐到全身性痉挛所历时间）：起病期越短，病死率越高。起病期＜４８小时者，病死率高达７９．０％，而起病期＞４８小时者，病死率仅为１９．２％，Ｐ＜０．００１；④痉挛的程度，如为反射性痉挛致发甜，甚至呼吸停止者，预后差，病死率为６０．２％，而其它仅为１０．８％，Ｐ＜０．００１。其它的原因还有自律性神经功能失调，并发其它感染，治疗不当等。
Analysis of 462 cases of tetanus clinical data showed that the main factors affecting the prognosis of patients with tetanus: ① age: neonatal and elderly patients mortality as high as 48.4%, while other age groups was only 18.4% , P <0.001; ② incubation period: the shorter the incubation period, the higher the mortality, the incubation period of <9 days of patients, the mortality rate was 54.5%, and> 9 days were only 5.6%, P < 001; ③ period of onset (that is, the first convulsions to systemic spastic experience of time): the shorter the onset period, the higher mortality. The onset period of <48 hours, the fatality rate as high as 79.0%, and the onset period of> 48 hours, the mortality rate was only 19.2%, P <0.001; ④ degree of spasticity, such as reflex spasms Induced to sweet, and even stopped breathing, the prognosis is poor, the case fatality rate was 60.2%, while the others were only 10.8%, P <0.001. Other reasons are self-discipline neurological disorders, complicated by other infections, improper treatment and so on.