急性阑尾炎患儿C-反应蛋白水平与病理类型之间的关系及临床意义

目的 探讨C-反应蛋白（CRP）对小儿急性阑尾炎病理类型的判别意义及对手术时机的指导作用.方法 选择我院2010年1月至2014年2月行阑尾切除术并同时检测了白细胞、中性粒细胞比例和CRP的患儿206例,根据术后病理类型分为坏疽性阑尾炎组（53例）和非坏疽性阑尾炎组（153例）,将206例患儿的年龄、性别、白细胞计数、中性粒细胞比例及CRP水平等指标进行Logistic回归分析及ROC分析并绘制ROC曲线.结果 坏疽性阑尾炎组和非坏疽性阑尾炎组患儿的白细胞计数、中性粒细胞比例及CRP水平差异均有统计学意义（P均＜0.05）;Logistic回归分析结果显示CRP水平是判断小儿坏疽性阑尾炎的危险因素（P =0.000,OR=1.071）;ROC曲线显示CRP对判断小儿坏疽性阑尾炎的作用优于中性粒细胞比例和白细胞计数（曲线下面积分别为0.931、0.659、0.599）,其最佳诊断临界值为44.4 mg/L,敏感度75.5％,特异性93.5％.结论 CRP水平有助于判别小儿急性阑尾炎的病理类型,可以作为选择是否手术的一个参考指标.

Diagnostic value of C-reactive protein in the pathological types of acute appendicitis in children

Objective To clarify diagnostic value of C-reactive protein （CRP） in the pathological types of acute appendicitis in children and the role of CRP as a surgical indication marker for appendicitis.Methods Two hundred and six patients who underwent appendectomies and had pathologically confirmed appendicitis were reviewed between January 2010 and February 2014,and they were divided into gangrenous appendicitis group（n =53） and non-gangrenous appendicitis group（n =153） by postoperative pathological type.The correlation between preoperative clinical factors and the actual histological severity,and identify surgical indication markers were assessed by multivariate analysis and ROC analysis.Results There were significant differences in white blood count（WBC）,neutrophils percentage and CRP level between gangrenous appendicitis group and non-gangrenous appendicitis group（P 〈 0.05）.Multivariate analysis showed that the level of CRP should be a risk factor for judging gangrenous appendicitis.It showed that the role of CRP in judging gangrenous appendicitis was superior to the proportion of neutrophils and WBC in the ROC curve.The ROC curve showed that the area under the ROC curve for the CRP level,neutrophils percentage and WBC was 0.931,0.659 and 0.599 respectively,and the optimal cut off value of CRP for surgical indication for classifying cases was around 44.4 mg/L,and the sensitivity was 75.5 %,specificity was 93.5 %.Conclusion The level of CRP is useful in identifying the pathological types of acute appendicitis in children,and can be considered to be a surgical indication marker for acute appendicitis in children.