PLASMIC积分对血栓性血小板减少性紫癜和弥散性血管内凝血鉴别的临床价值

The diagnostic value of PLASMIC score in the discrimination between thrombotic thrombocytopenicpurpura and disseminated intravascular coagulation

目的比较PLASMIC积分在血栓性血小板减少性紫癜（TTP）和弥散性血管内凝血（DIC）患者中的差异，评价该积分系统对于两种疾病鉴别诊断的临床价值。方法回顾性分析24例TTP和41例DIC患者的临床资料，以及血小板计数、平均红细胞体积、间接胆红素、肌酐和凝血酶原时间．国际标准化比值，统计PLASMIC积分。结果根据PLASMIC积分预测伴有ADAMTSl3严重缺乏的TTP的危险度分层，24例TTP患者中，3例（12．5％）存在中度风险，21例（87．5％）存在高度风险。而在41例DIC患者中，38例（92．7％）存在低度风险，2例（4．9％）存在中度风险，仅有1例（2．4％）患者存在高度风险。在65例患者中，PLASMIC积分达高度风险对于TTP诊断的敏感性为87．5％，特异性为97．6％。结论PLASMIC积分系统高度风险的患者诊断为TTP的可能性大。该积分系统对于TTP和DIC的鉴别诊断有较高的临床价值。

Objective PLASMIC score was evaluated its value in differential diagnosis between the patients with thrombotic thrombocytopenic purpura （TTP） and those with disseminated intravaseular coagulation （DIC）. Method Twenty-four patients with TTP and 41 cases with DIC were retrospectively analyzed in this study. The platelet count, average red blood cell volume, indirect bilirubin, creatinine and prothrombin time international normalised ratio were collected, and then PLASMIC scores were calculated. Results According to the risk classification of PLASMIC score, three （12.5%） TTP patients had moderate risk, and the rest 21 （87.5%） cases had high risk. In DIC patients, 92.7% cases were in low risk group, 4.9% at moderate risk, and only one case had high risk. Of these 65 patients, the sensitivity and the specificity to TTP of the high risk of the scoring system were 87.5% and 97.6%, respectively. Conclusion The patients with high risk of PLASMIC score correlated well with clinical TTP diagnosis. The scoring system showed to be an excellent diagnostic model to distinguish TTP patients from those with DIC.