Objective:To discuss prognostic value of peripheral blood white blood cell(WBC)count in early evaluation of acute paraquat poisoning(APP)patients.Method:We reviewed the general data,peripheral blood WBC counts and plasma paraquat concentrations of 202 APP patients poisoning in 24 hours.Calculated the Severity Index of Paraqaut Poisoning(SIPP),then divided the patients into three groups on the basis of SIPP [Group A:SIPP<10(h·mg·L~(-1)),Group B:10≤SIPP≤50(h·mg·L~(-1)),Group C:SIPP>50(h·mg·L~(-1))],compared t...