在肝硬化基础上发生的重型肝炎患者血浆置换的疗效低于在慢性肝炎基础上发生的重型肝炎（P<0.01）；
The plasma exchange's efficacy for chronic severe hepatitis patients with underlying liver cirrhosis were lower than those with chronic hepatitis(P<0.01).
尽管临床大多数患者被诊断为慢性重型肝炎，实际上大部分患者的临床经过都是在慢性肝病基础上发生的急性肝衰竭。
Although most patients were diagnosed as chronic severe hepatitis in clinical practice, the clinical courses were actually patients fall into ALF on the background of chronic hepatitis.
尽管临床大多数患者被诊断为慢性重型肝炎，实际上大部分患者的临床经过都是在慢性肝病基础上发生的急性肝衰竭。
Although most patients were diagnosed as chronic severe hepatitis in clinical practice, the clinical courses were actually patients fall into ALF on the background of chronic hepatitis.
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