[T-SPOT.TB in the diagnosis of tuberculous peritonitis].

摘要:

To evaluate the value of T-SPOT.TB in the diagnosis of tuberculous peritonitis (TBP).A total of 50 patients with clinically suspected TBP admitted from August 2011 to July 2012 from the Third Xiangya Hospital were enrolled in this prospective cohort study. Peripheral blood T-SPOT.TB, purified protein derivatives of tuberculin (PPD) skin test, serum tuberculosis antibody (TB-Ab) and ascitic adenosine deaminase (ADA) were measured in the 50 patients and we compared the diagnostic value of the 4 methods.According to the standard of diagnosis of TBP and grouping, 24 patients were diagnosed with TBP, 17 non-TBP and 9 undiagnosed in the end. The sensitivity of T-SPOT.TB for the diagnosis of TBP was 91.7% (22/24), with statistical significance when compared with PPD skin test 37.5% (9/24), serum TB-Ab 16.7% (4/24), and ascitic ADA 36.4% (8/22) (P<0.01). The specificity of T-SPOT.TB for the identification of non-TBP was 76.5% (13/17), without statistical significance when compared with PPD skin test 70.0% (7/10), serum TB-Ab 78.6% (11/14), and ascitic ADA 100% (14/14) (P>0.05). The positive prediction value of T-SPOT.TB for the diagnosis of TBP was 84.6% (22/26), without statistical significance when compared with PPD skin test 75.0% (9/12), serum TB-Ab 57.1% (4/7), and ascitic ADA 100%(8/8) (P>0.05). The negative prediction value of T-SPOT.TB for the identification of non-TBP was 86.7% (13/15), with statistical significance when compared with PPD skin test 31.8% (7/22), serum TB-Ab 35.5% (11/31), and ascitic ADA 50.0% (14/28) (P<0.05).Peripheral blood T-SPOT.TB for the diagnosis of TBP is highly sensitive, which is better than PPD skin test, serum TB-Ab, and ascitic ADA. T-SPOT.TB has an important reference for diagnosing suspected TBP quickly and accurately.

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