• Laoqi Liang, Xi Li, Bin Liu, Qian Zhang, Xiaoyi He, Kunshu Tan, and Fu Rong.
• Shunde Hospital, Southern Medical University (the First People's Hospital of Shunde), Foshan, Guangdong 528300, China. Electronic address: lockeycrystal@sina.com.
• Am. J. Med. Sci. 2023 May 1; 365 (5): 437442437-442.

BackgroundThe aim of this study was to explore the difference in activated partial thromboplastin time (APTT) levels in patients with tuberculous and non-tuberculous pleural effusion (TPE and non-TPE) and its possible mechanism to provide a new direction for the diagnosis of pleural effusion (PE).MethodsA total of 61 patients diagnosed with tuberculous pleurisy with pleural effusion at Shunde Hospital of Southern Medical University from July 2013 to September 2020 were selected as the observation group (tuberculosis group). Another 89 patients (45 with malignant pleural effusion (MPE) and 44 with parapneumonic pleural effusion (PPE) composed the control group. The adenosine deaminase (ADA) level in pleural fluid and plasma APTT level were measured in the two groups.ResultsThe levels of APTT and ADA in the TPE group were significantly higher than the control group, and were 40.03 (37.00, 42.60) (s) and 55.00 (47.00, 69.25) (U/L) for TPE, 29.50 (25.45, 34.20) (s) and 11.90 (9.15, 19.05) (U/L) for malignant pleural effusion (MPE) and 31.35 (27.43, 35.76) (s) and 15.15 (7.40, 35.00) (U/L) for parapneumonic pleural effusion (PPE), respectively.ConclusionsThe level of plasma APTT has certain significance in differentiating tuberculous pleural effusion from nontuberculous pleural effusion.Copyright © 2023. Published by Elsevier Inc.

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