8～18%的肝硬变腹水患者在其疾病自然过程中至少发生一次自发性细菌性腹膜炎(SBP)。SBP 的病死率很高,早期诊断并迅速给予抗生素治疗可获较好转归。已经证明肝硬变腹水时杀菌及调理活性降低,而且此活性与 C_3含量显著相关,因而推测腹水 C_3含量降低的患者易于发生 SBP。作者对住院肝硬变患者进行了一项前瞻性研究,观察 SBP 的发生以及测定 C_3浓度。本研究包括连续住院的33例患者。Ⅰ组为发 Eight to 18% of cirrhotic ascites patients develop at least one spontaneous bacterial peritonitis (SBP) during the natural course of their disease. SBP mortality is high, early diagnosis and rapid antibiotic treatment can be a better outcome. Bactericidal and opsonization activities have been shown to be reduced in cirrhotic ascites, and this activity is significantly associated with C_3 content, suggesting that SBP is predisposed to patients with decreased levels of C_3 in ascites. The authors conducted a prospective study of hospitalized cirrhotic patients to observe the incidence of SBP and determine the C_3 concentration. The study included 33 consecutive hospitalized patients. Group Ⅰ for the hair