中文摘要：

目的：皮肤软组织扩张术一个令人头疼的问题是其高并发症,其中血肿的发生往往意味着二次手术,本研究希望寻找皮肤软组织扩张Ⅰ期术后血肿发生的独立危险因素,为临床工作提供指导。方法：回顾性分析西京医院整形外科2003年1月至2012年12月间行扩张器置入术患者的临床资料,应用单因素Logistic回归法进行比较,寻找潜在危险因素,将单因素分析差异P〈0.1的变量引入多因素Logistic回归分析模型,采用Backward Conditional法行逐步回归分析,以P〈0.05筛选出独立危险因素。结果：2003年1月至2012年12月西京医院整形科行皮肤软组织置入术患者,共2056人次3382例扩张器入选研究,Ⅰ期术后发生血肿的共100例,发生率为3.0%,经过统计分析最终发现术前APTT值、单次手术埋置扩张器数、性别及扩张器埋置部位是血肿的独立危险因素。结论：血肿的独立危险因素为术前APTT值、单次手术埋置扩张器数、性别及扩张器埋置部位,术前APTT值越高、单次手术扩张器埋置数越多、患者为男性及手术部位为面颈部时,软组织扩张术后发生血肿的可能性越大,本研究对指导临床工作降低血肿发生具有重要的参考意义。

英文摘要：

Objective： High incidence of complications is an annoying problem for tissue expansion.Occurring of hematoma,which is one of complications,often means second operation.This study was carried out to indentify the independent risk factors for hematoma after soft tissue expansion and instruct clinical work.Methods： A retrospective analysis of all patients who were undergoing the soft tissue expansion at the department of plastic surgery of Xijing Hospital from January 2003 to December 2012 was made.Demographic information was collected from the medical record for each patient.Univariate associations with hematoma were measured by logistic regression and represented as odds ratios.These results were used to identify the potential risk factors for hematoma.Multivariate logistic regression was used to calculate odds ratios for risk factors of hematoma.Risk factors were identified if the p-value was less than 0.05.Results： A total of 3382 expanders in 2056 patients were included in this study.There were 100（3.0 %） implants occurred hematoma.Multivariate logistic regression found that preoperative APTT value,numbers of expander implanted,male and surgery site were independent risk factors for hematoma.Conclusion： Risk factors related to hematoma were preoperative APTT value,numbers of expander implanted,male and surgery site.The higher of preoperative APTT value,the more numbers of expander implanted,the patient being male and the surgery site being facial part and cervicalregion,the more possibility hematoma occurred.The result was important to instruct clinical work and reduce the incidence of hematoma.