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目的 探讨聚合酶链反应 (PCR技术 )对诊断结核性关节炎的临床价值。方法 对 42例结核性关节炎与 2 0例非结核性关节炎的关节积液分别应用抗酸染色镜检 ,分离培养和PCR检测。结果 42例结核性关节积液三种方法的检出率分别为 :镜检法 1 9 0 % ,培养法 38 1 % ,PCR法 66 7% ,后者显著高于前二者 (P <0 .0 1 )。 2 0例非结核性关节积液抗酸染色镜检和分离培养结果均为阴性 ,PCR阳性率 1 0 %。结论 PCR技术检测关节积液中的结核杆菌具有快速、敏感和高效等优点 ,对关节结核的早期诊断和鉴别诊断具有重要价值
Objective To investigate the clinical value of polymerase chain reaction (PCR) in the diagnosis of tuberculous arthritis. Methods 42 cases of tuberculous arthritis and 20 cases of non-tuberculous arthritis of the joint effusion were detected by acid-fast staining, isolation and culture and PCR detection. Results The detection rates of 42 cases of tuberculous joint effusion were 190% in microscopy, 38% in culture and 66.7% in PCR, which were significantly higher than those of the former two (P <0 .0 1). 20 cases of non-tuberculous joint fluid acid-fast staining microscopy and isolation and culture results were negative, PCR-positive rate of 10%. Conclusion PCR detection of Mycobacterium tuberculosis in joint effusion has the advantages of rapid, sensitive and efficient, and has an important value in the early diagnosis and differential diagnosis of joint tuberculosis