磁共振成像对类风湿关节炎诊断效率的荟萃分析

目的 系统评价磁共振成像(MRI)对于类风湿关节炎(RA)的诊断效能.方法 计算机检索国内外各主要数据库,辅以手工检索和其他检索方法,收集关于MRI诊断RA的对照试验,检索时间 1996-2009年.按照纳入标准筛选文献并提取资料,采用Meta-disc软件合并敏感性,特异性,阳性似然比,阴性似然比,诊断性试验比值比,进行异质性分析(Q-检验,I2),当P>0.10,且I2≤50%时无异质性.结果 共纳入12项随机对照试验.结果 显示病程≤2年的RA患者,滑膜炎、骨侵蚀和腱鞘炎诊断的敏感度分别为81%～100%、48%、100%~67%~96%,特异度分别为64%～89%、16%~100%~21%~74%.病程>2年的RA患者,滑膜炎、骨侵蚀诊断的敏感度分别为91%、84%,特异度分别为70%、81%.结论 MRI显示滑膜炎对于早期和中晚期RA有诊断意义,骨侵蚀和腱鞘炎对于早期RA的诊断意义有待进一步研究.纳入研究样本量小,对照组病例缺乏代表性,建议设计严谨且更大样本病例的临床研究.

Abstract：

objective To evaluate the diagnostic efficiency of magnetic resonance imaging(MRI)for rheumatoid arthritis(RA).Methods The major international databases was searched by computer and Other methods to collect control studies about MRI for the diagnosis of RA,the searching deadline was December 2009.Data were screened and extracted by inclusion criteria.Meta-disc software Was used for statistics,including sensitivity,specificity,positive likelihood ratio,negative likelihood ratio,diagnostic odds ratio(OR)and heterogeneity analysis.Results Twelve random control tests were included.Meta-analysis indicated that sensitivities of vities of synovitis,bone-erosion and tendenosynovitis were 81%~100%,48%～100%and 67%～96%while specificities of them were 64%～89%,16%~100%and 21%-74%respectively for RA patients(≤2vears).Sensitivities of synovitis and bone-erosion were 91%and 84%while specificities of them were 70%and 81%for RA Datients (>2 years).Conclusion Synovitis shown by MRI is helpful for the diagnosis of earlv and med-to-late RA.Diagnostic values of bone-erosion and tendonosynovitis demonstrated by MRI for earlv RA were not clear.The sample size of the included studies is small and some studies lack of control groupsput the conclusion of this meta-analysis liable for bias.We suggest that better designed and larger sample clinical studies are necessary.     

冠状动脉支架内再狭窄的危险因素分析

目的:探讨冠状动脉支架内再狭窄的危险因素.方法:将205例患者根据冠状动脉造影结果分为支架内再狭窄组(n=169)及非支架内再狭窄组(n=36),并根据支架内是否闭塞及Mehran分型进行亚组分析.采用单因素及Logistic多因素回归分析临床特征及冠状动脉造影特征与再狭窄的关联.结果:单因素分析显示:①支架内再狭窄组的需要胰岛素治疗的糖尿病、长病变及多支病变患者比例高于非支架内再狭窄组(P值分别为0.047/0.027/＜0.001);②术后发生支架内闭塞的组别中需要胰岛素治疗的糖尿病患者比例及术前狭窄程度均高于术后未发生支架内闭塞的组别(P分别为0.024/0.013);③术后再狭窄的程度(根据Mehran分型)较严重的组别中需要胰岛素治疗的糖尿病患者及分叉病变的患者比例增高(P值分别为0.040/0.001).Logistic多因素分析证实多支病变为支架内再狭窄的独立的危险性预测因素,比值比为33.409,对有无支架内再狭窄的判对率为97.2%.结论:多支病变为支架内再狭窄的独立的危险性预测因素;需要胰岛素治疗的糖尿病及长病变可能与支架内再狭窄发生相关;需要胰岛素治疗的糖尿病及术前狭窄程度较重可能与术后支架内闭塞相关;需要胰岛素治疗的糖尿病及分叉病变可能与再狭窄的严重程度相关.     

药物洗脱支架治疗冠状动脉支架内再狭窄的长期疗效观察

目的：评价药物洗脱支架治疗支架内再狭窄的长期疗效。方法：经药物洗脱支架治疗的支架内狭窄患者63例,平均随访22个月,观察有无主要心脏不良事件发生。结果：63例患者中,主要心脏不良事件的发生率为46．5％,未发生支架内血栓形成及心肌梗死事件。药物洗脱支架治疗药物洗脱支架术后支架内再狭窄疗效优于金属裸支架术后支架内再狭窄。Logistic多因素分析显示,药物洗脱支架治疗支架内再狭窄的疗效与年龄、性别、病变严重程度、病变直径、原支架种类及药物支架涂层材料无显著相关。结论：药物洗脱支架治疗支架内再狭窄安全、有效。