| Popis: |
Pleural fluid adenosine deaminase (ADAPF) is a diagnostic test for diagnosing the early tuberculous pleuritis (TBP). However, cutoff values vary widely in many studies.To determine the optimal diagnostic value of ADAPF.A prospective study was performed between August 2012 and August 2014. One hundred seventyeight patients with pleural effusions; 29 TBPs, 63 malignant pleural effusions (MPEs), 40 parapneumonic effusions (PARAEs), 18 transudates, 5 empyemas, 19 other exudates, and 4 unknown causes, were investigated.Mean + SD of ADAPF was 60.0+25.6 U/L with TBPs, 15.6+11.1 U/L with MPEs, 15.8+9.9 U/L with PARAEs, 6.6+5.7 U/L with transudates, 13.8+7.7 U/L with empyemas, 14.5+7.1 U/L with other exudates, and 17.8+4.6 U/L with unknown causes. The area under the ROC curve was 0.983 (95% CI: 0.969-0.998) for the best ADAPF cutoff value of 33.5 U/L, with 93.1% sensitivity, 94.6 % specificity, 77.1% positive predictive value, and 98.6% negative predictive. ADAPF level30.5 U/L suggests that a TBP is highly unlikely.Pleural fluid ADA assay is a helpful diagnostic tool with high sensitivity and specificity for the rapid diagnosis of TBP. |
