中文摘要：

背景获得社区的肺病(帽子)在 world.Most 附近从传染疾病仍然是领先的原因 ot 死亡之一严重帽子病人进入特别护理单位( ICU )，并且收到学习试图评估肺病严厉索引(希腊语的第二十三个字母)的角色的在场的强烈 treatment.The ， CURB-65 ，并且败血在就医的帽子病人的管理得分并且在 675 个帽子病人的一个总数就医了在的严重 cases.Methods 的预后上探索 ICU 治疗的效果

英文摘要：

Background Community-acquired pneumonia （CAP） remains one of the leading causes ot death from infectious diseases around the world.Most severe CAP patients are admitted to the intensive care unit （ICU）,and receive intense treatment.The present study aimed to evaluate the role of the pneumonia severity index （PSI）,CURB-65,and sepsis score in the management of hospitalized CAP patients and explore the effect of ICU treatment on prognosis of severe cases.Methods A total of 675 CAP patients hospitalized in the Second Affiliated Hospital of Zhejiang University School of Medicine were retrospectively investigated.The ability of different pneumonia severity scores to predict mortality was compared for effectiveness,while the risk factors associated with 30-day mortality rates and hospital length of stay （LOS） were evaluated.The effect of ICU treatment on the outcomes of severe CAP patients was also investigated.Results All three scoring systems revealed that the mortality associated with the low-risk or intermediate-risk group was significantly lower than with the high-risk group.As the risk level increased,the frequency of ICU admission rose in tandem and LOS in the hospital was prolonged.The areas under the receiver operating characteristic curve in the prediction of mortality were 0.94,0.91 and 0.89 for the PSI,CURB-65 and sepsis score,respectively.Compared with the corresponding control groups,the mortality was markedly increased in patients with a history of smoking,prior admission to ICU,respiratory failure,or co-morbidity of heart disease.The differences were also identified in LOS between control groups and patients with ICU treatment,heart,or cerebrovascular disease.Logistic regression analysis showed that age over 65 years,a history of smoking,and respiratory failure were closely related to mortality in the overall CAP cohort,whereas age,ICU admission,respiratory failure,and LOS at home between disease attack and hospital admission were identified as independent risk factors for mortality in th