scholarly journals Study of Diagnostic Importance of Adenosine Deaminase (ADA) Level in Pleural Effusions

2015 ◽  
Vol 2 (2) ◽  
pp. 104 ◽  
Author(s):  
Sachin Kate ◽  
B. K. Mutha ◽  
Gauri Kulkarni ◽  
Chetan Mahajan ◽  
Sushma Dugad
Keyword(s):  
Pleural Effusion ◽  
Adenosine Deaminase ◽  
Pleural Fluid ◽  
Sensitivity And Specificity ◽  
Predictive Value ◽  
Tertiary Care ◽  
High Sensitivity ◽  
Pleural Effusions ◽  
Tertiary Care Centre ◽  
Adenosine Deaminase Activity

<strong>Introduction</strong>: Pleural effusion is the abnormal accumulation of fluid in the pleural space. TB is the most common cause of pleural effusion worldwide (30-60%). The pleural fluid activity of adenosine deaminase (ADA) is one of the best, providing reliable basis for a treatment decision, particularly in excluding the diagnosis of tuberculosis, due to its high sensitivity.<strong> Aims and Objectives</strong>: To assess the importance of adenosine deaminase(ADA) level in the diagnosis of pleural effusion. To assess Adenosine Deaminase Activity (ADA) in tuberculosis pleural effusion and assess the sensitivity and specificity of ADA levels. <strong>Materials and Methods</strong>: This study was performed at the Department of Pulmonary Medicine at tertiary care centre. The study comprised of 75 patients of pleural effusion having Age &gt; 14 years, Clinical and Radiological evidence of Pleural Effusions&amp;Patients willing for ADA examination. Patients having Age &gt; 65 years, minimal nontappable effusion, not giving consent for ADA examination patient were excluded from the study. Detailed history, thorough physical examination, radiological findings, haematological and biochemical findings were recorded in the proforma. Pleural aspiration was performed on all patients. Macroscopic findings, cytological, microbiological and biochemical analysis of pleural fluid were performed in all patients including ADA level. PCR for Mycobacterium tuberculosis was also assessed in pleural fluid. Pleural fluid Adenosine deaminase level was measured by Giusti and Galanti method. <strong>Result</strong>: In our study out of 45 patients with tuberculosis pleural effusion ADA was more than 40IU/L in 42 (93.33%) and less than40IU/L in 3 (6.66 %). Our study showed a mean ADA of 107.7 IU/L Using a cut off of greater 40IU/L we got a sensitivity and specificity of 93.3% and 90% respectively and Positive predictive value 93.3% and Negative predictive value 90%. <strong>Conclusion</strong>: Pleural fluid ADA activity has been shown to be a valuable biochemical marker that has a high sensitivity and specificity for TB diagnosis.

scholarly journals Diagnostic Accuracy of Adenosine deaminase enzyme (ADA) in the diagnosis of tuberculous pleural effusion

2020 ◽  
Vol 24 (4) ◽  
pp. 311-315
Author(s):  
Haroon Ur Rasheed ◽  
Ejaz Hassan Khan ◽  
Mohsin Shafi ◽  
Ahmad Rafiq ◽  
Ambreen Ali ◽  
...  
Keyword(s):  
Pleural Effusion ◽  
Diagnostic Accuracy ◽  
Adenosine Deaminase ◽  
Pleural Fluid ◽  
Predictive Value ◽  
Colorimetric Method ◽  
Pleural Effusions ◽  
Cross Sectional ◽  
Tuberculous Pleural Effusion ◽  
Systemic Examination

Objective: To study the diagnostic accuracy of Adenosine deaminase enzyme (ADA) in the diagnosis of tuberculous pleural effusion (TPE).Material and Methods: It was a cross-sectional descriptive study conducted in the Pulmonology departments of Lady Reading and Khyber Teaching Hospital Peshawar and department of Pathology, Khyber Medical College, Peshawar from April 2015 to Jan 2016. A total of 210 tuberculous and non-tuberculous pleural effusion patients were selected through consecutive non-probability sampling techniques. After physical and systemic examination, 3cc of pleural fluid was taken. ADA was estimated by Non-Guisti and Galanti method through the simple colorimetric method. All the data was entered in a specially designed proforma and SPSS v16 was used for statistical analysis.Results: Out of 210 tuberculous and non-tuberculous pleural effusions, the commonest cause of pleural effusion was tuberculosis followed by malignancy. In our study, Pleural fluid ADA levels have sensitivity, specificity, positive predictive value( PPV), and negative predictive value (NPV) of 95.5%, 92.3%, 92.4%, and 96% respectively in differentiating tuberculous pleural effusions from non-tuberculous lymphocytes predominant pleural effusions. Conclusion: Tuberculosis is the commonest infectious disease worldwide. A pleural fluid ADA level of ≥ 35 U/L in lymphocyte-predominant effusions makes mycobacterium tuberculosis most likely etiology. This test is not only very sensitive and specific but also it is very cheap, quick, and easy to perform by routine colorimetric method.  

scholarly journals Diagnostic Accuracy of Sonographic Septations in Tuberculous and Malignant Pleural Effusions

2020 ◽  
Vol 9 (2) ◽  
pp. 95-102
Author(s):  
Abdul Rasheed Qureshi ◽  
Muhammad Irfan ◽  
Zeeshan Ashraf
Keyword(s):  
Pleural Effusion ◽  
Diagnostic Accuracy ◽  
Predictive Value ◽  
Tertiary Care ◽  
Positive Likelihood Ratio ◽  
Fisher Exact Test ◽  
Care Hospital ◽  
Pleural Effusions ◽  
Malignant Pleural Effusions ◽  
Malignant Group

Background: Discrimination between tuberculous (TB) and malignant pleural effusions is a real practical challenge because both exist as exudative lymphocytic type. Transthoracic ultrasonography not only identifies and quantifies pleural effusion but also displays sonographic septations, which are frequently seen in TB pleural effusions and can help in differentiation between tuberculosis and malignancy successfully, without any invasive procedure. We designed this study to determine the diagnostic usefulness of these septations for tuberculous and malignant pleural effusions. Material and Methods: This prospective study was conducted in the OPD of Gulab Devi Chest Hospital Lahore, Pakistan, a 1500 bedded tertiary care hospital, from November 2016 to February 2018. Total of 339 consecutive cases, aged 14-83 years with radiological evidence of pleural effusion were included in the study. After detailed history, thorough physical examination, radiological, haematological and biochemical findings were recorded. Pleural fluid macroscopic, cytological, microbiologic and biochemical analysis results were also recorded. Ultrasonography was done, septated and non-septated pleural effusions identified and findings were noted. SPSS-16 was used for statistical evaluation. Fisher Exact test was utilized for comparison between TB and malignant cases with P-value < 0.05 taken as significant. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), diagnostic accuracy and positive likelihood ratio were calculated. Results: Out of total 339 cases, 49 (14.45%) were malignant and 290 (85.55%) were non-malignant. In the malignant group, only 03 cases (6.12%) showed sonographic septations. In the non-malignant group, 259/290 (89.31%) cases showed tuberculous etiology and 187/259 (72.20%) of these cases displayed sonographic septations. By considering septations as predictor of TB, statistical analysis revealed a sensitivity of 79.23%, specificity of 92.85%, PPV of 98.42%, NPV of 44.31% and diagnostic accuracy of 81.29%, respectively. Conclusions: Sonographic septations can be a valuable predictor of tuberculosis, in a population with high prevalence of the disease. We found it to be a useful feature in differentiating between a malignant and tuberculous etiology, in exudative lymphocytic pleural effusions. It can be used with confidence in patients who are unfit for interventional procedures.

scholarly journals Pleural fluid cytology, biochemistry and adenosine deminase level study in differentiating tubercular and non tubercular causes of pleural effusion

KYAMC Journal ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 28-31
Author(s):  
Kazi Shihab Uddin ◽  
Md Mahbub Rashid Sarker ◽  
Md Abdur Razzaque ◽  
Md Zulfikar Ali
Keyword(s):  
Pleural Effusion ◽  
Pleural Fluid ◽  
High Sensitivity ◽  
Malignant Cell ◽  
Mean Value ◽  
Cell Distribution ◽  
Pleural Effusions ◽  
The World ◽  
Biochemical Examination ◽  
Fluid Cytology

Background: Adenosine deaminase (ADA) level in pleural fluid study has gained popularity for quick diagnosis and treatment of tuberculous pleural effusion in tuberculosis burden countries. Studies have confirmed high sensitivity and specificity across the world. Pleural fluid cytology, biochemistry and malignant cell examinations are already in use and widely available.Objectives: Diagnostic approach to quickly differentiate between tubercular and non tubercular pleural effusions by analyzing cytology, biochemistry and ADA level.Materials & Methods: This study was carried out on 85 patients who were admitted or visited outpatient department with pleural effusion. The pleural fluid study was including measurement of ADA level was done.Results: 41 cases were diagnosed as tubercular pleural effusion. Among the low ADA group, 9 cases were diagnosed as malignant pleural effusion with positive malignant cell and 13 cases were transudative effusion.7 cases were diagnosed as parapneumonic effusion with exudative fluid, neutrophilic cell distribution and mixed ADA activity.Conclusion: ADA was found positive with a mean value of 88.3 U/L in tubercular pleural effusions. Non tubercular pleural effusion showed low ADA level. However the cytological and biochemical examination of pleural fluid was also found to be important in differentiating tubercular from non tubercular causes.KYAMC Journal Vol. 9, No.-1, April 2018, Page 28-31

scholarly journals Pleural Fluid Adenosine Deaminase (ADA) Level in Tuberculous Pleurisy

2013 ◽  
Vol 3 (3) ◽  
pp. 26-27 ◽  
Author(s):  
YP Paudel ◽  
AK Kasyap ◽  
Y Dongol ◽  
RK Shrestha ◽  
B Aryal ◽  
...  
Keyword(s):  
Adenosine Deaminase ◽  
Pleural Fluid ◽  
Sensitivity And Specificity ◽  
Predictive Value ◽  
Biological Marker ◽  
Cross Sectional Study ◽  
Clinical Findings ◽  
Medical Ward ◽  
Cross Sectional ◽  
Medical College

Adenosine Deaminase (ADA) is used as a well established biological marker for diagnosis of tuberculous pleuritis. The aim of this study was to assess the sensitivity and specificity of ADA in patients with pleural effusion admitted in the medical ward. This was an cross sectional study. The information was gathered only from those patients whose pleural fluid sample was sent for ADA in clinical biochemistry laboratory of KIST Medical College and Teaching hospital. The data was acquired from the medical records of patients attending medical ward. The patients were considered as TB positive if they were clini­cally diagnosed so and taken as negative otherwise. Fifty six pleuritis patients were evaluated. Using the cut off value of 30 U/L, the overall sensitivity and specificity was 93.3% and 57.1% respectively. The association between ADA findings and the clinical findings were statistically significant (p <0.001). The positive predictive value (PVP) and the negative predictive value (PVN) were 82.3% and 80% respectively. ADA is an inexpensive, rapid and simple test for analysis of tuberculous pleuritis. Though, it is a sensitive test for tuberculosis, due to its low specificity, sometimes negative cases can be considered as positive. DOI: http://dx.doi.org/10.3126/jcmc.v3i3.8634Journal of Chitwan Medical College 2013; 3(3): 26-27

scholarly journals Utility of pleural fluid adenosine deaminase in diagnosing tubercular pleural effusion: a prospective observational study in a tertiary care hospital

2019 ◽  
Vol 6 (6) ◽  
pp. 1711
Author(s):  
Gayathri Devi H. J. ◽  
Sujith H.
Keyword(s):  
Pleural Effusion ◽  
Observational Study ◽  
Pleural Fluid ◽  
Predictive Value ◽  
Prospective Observational Study ◽  
Tertiary Care Hospital ◽  
Tertiary Care ◽  
Clinical History ◽  
Diagnostic Methods ◽  
Care Hospital

Background: The diagnosis of Tubercular (TB) pleural effusion continues to be a challenge in clinical practice, as traditional diagnostic methods are useful but do not provide enough sensitivity and specificity.Methods: This was a prospective observational study carried out at Tertiary care Hospital with study population of 76 patients. Etiological diagnosis was based on clinical history with radiological imaging, biochemical and cytological examination of pleural fluid. Pleural fluid ADA was used as a biomarker for the diagnosis of tubercular pleural effusion.Results: The study included 76 patients with 69.7% (n=53) males and 30.3%(n=23) females. The mean age of patients was 48.97 17.03 years. Of 76 cases of pleural effusion, 62 were exudates and 14 transudates. Tuberculosis was the most common cause among exudates which accounted for 51.3% (n=39) of cases. The sensitivity, specificity, Positive Predictive Value (PPV) and Negative Predictive Value (NPV), Accuracy of pleural fluid ADA in diagnosing tubercular pleural effusion was 92.3%, 97.3%, 97%, 92% and 94.7% respectively.Conclusions: Pleural fluid ADA can be one of the most reliable biomarkers for the diagnosis of TB pleural effusion considering its high sensitivity and specificity.

scholarly journals CORRELATION BETWEEN ADENOSINE DEAMINASE ACTIVITY IN PLEURAL FLUID AND SERUM OF PATIENTS WITH PLEURAL EFFUSION

2018 ◽  
Vol 24 (2) ◽  
pp. 180
Author(s):  
Pande Putu Ayu Patria Dewi ◽  
Aryati Aryati ◽  
Leonita Anniwati ◽  
Isnin Anang Marhana
Keyword(s):  
Pleural Effusion ◽  
Adenosine Deaminase ◽  
Pleural Fluid ◽  
Gastrointestinal Disease ◽  
Pleural Space ◽  
Systemic Diseases ◽  
Cross Sectional ◽  
Adenosine Deaminase Activity ◽  
Abnormal Accumulation ◽  
Cross Sectional Design

Pleural effusion is an abnormal accumulation of fluid in the pleural space resulting from increased production of fluid or decreased resorption of fluid in the pleural space. Pleural effusion can be caused by infectious diseases, malignancies, collagen disease, gastrointestinal disease, heart disease and other causes such as medication. Adenosine Deaminase (ADA) is an enzyme involved in the catabolism of purines. This enzyme can be measured in pleural fluid, serum and other body fluids such as cerebrospinal and ascites fluid. The aim of this study was to analyze the correlation between adenosine deaminase activity in pleural fluid and serum in patients with pleural effusion. This research was an observational study with a cross-sectional design. Examination of ADA activity was performed in pleural fluid and serum. Adenosine deaminase activity was examined using photometric methods (Non-Giusti), using Diazyme reagent by TMS 24i Premium. Subjects were 46 patients with pleural effusion caused by malignancies, tuberculosis and systemic diseases. Mean±SD ADA activity for all pleural effusion samples in serum was 13.037± 8.365 (0.5-34.1) U//L and pleural fluid 30.843± 28.860 U//L (1.3-140.8). No correlation between ADA activity in serum and pleural fluid (r=0.173, p= 0.252) was found in all samples. No correlation between ADA activity in serum and pleural fluis was found in malignancies (r=0.109, p=0.630), tuberculosis (r= 0.366, p=0.123), systemic diseases (r =0.466, p=0.429) and non-tuberculosis group (r=0.126, p=0.532). There was no correlation between pleural fluid ADA activity and serum. 

scholarly journals Potential role of cholesterol in distinguishing malignant from benign pleural effusion

2004 ◽  
Vol 61 (6) ◽  
pp. 607-611
Author(s):  
Goran Plavec ◽  
Ilija Tomic ◽  
Natasa Nidzovic ◽  
Branko Radojcic ◽  
Slobodan Acimovic ◽  
...  
Keyword(s):  
Pleural Effusion ◽  
Cholesterol Level ◽  
Pleural Fluid ◽  
Serum Cholesterol ◽  
Predictive Value ◽  
Pleural Effusions ◽  
Mean Values ◽  
Cholesterol Ratio ◽  
The Difference ◽  
Benign Pleural Effusion

Cholesterol and carcinoembryonic antigen (CEA) levels in pleural effusion and sera, were measured in 199 patients with pleural effusions of various origins. Malignant cause was found in 93, and nonmalignant in 106 patients. Mean cholesterol level in sera of patient with malignant disease was 5.0 ? 0.93mmol/L, and in nonmalignant group 4.34 ? 1.32 mmol/L. The difference was not statistically significant. Mean cholesterol level in nonmalignant pleural effusions was higher thAn those in malignant (2.51 ? 1.23 mmol/L; and 2.28 ? 1.06 mmol/L), but the difference was also not significant. Average pleural fluid/serum cholesterol ratio (HolI/S) in nonmalignant group was 0.61 ? 0.32 and in malignant group 0.46 ? 0.22. The difference between those mean values was significant. Higher ratio, at the cut off value of 0.5 was found in 79/106 and in 25/93 malignant patients. Calculated sensitivity was 75%, specificity 73%, positive predictive value 76%, negative predictive value 65% and accuracy 69%. Significant negative correlation between Holi/S and pleural fluid CEA was found (p<0.05). It was assumed that pleural fluid/serum cholesterol ratio lower than 0,5 could be of great benefit, as an additional test in the differentiation of malignant from benign pleural effusion.

Determination of tissue polypeptide-specific antigen in pleural fluid and serum from patients with pleural effusion

1995 ◽  
Vol 10 (3) ◽  
pp. 161-165 ◽  
Author(s):  
V. Villena ◽  
J. Echave-Sustaeta ◽  
A. Lopez-Encuentra ◽  
P. Martin-Escribano ◽  
J. Estenoz-Alfaro ◽  
...  
Keyword(s):  
Pleural Effusion ◽  
Pleural Fluid ◽  
Sensitivity And Specificity ◽  
Specific Antigen ◽  
Diagnostic Value ◽  
Pleural Effusions ◽  
Malignant Pleural Effusions ◽  
Cytologic Analysis

As a tool for differentiating malignant and benign pleural effusions, we evaluated the diagnostic value of the assay of tissue polypeptide-specific antigen (TPS) in pleural fluid and serum, and of the pleural fluid TPS/serum TPS ratio in patients with pleural effusion. We studied prospectively 147 consecutive patients who had pleural effusions: 43 malignant pleural effusions and 104 benign pleural effusions. TPS levels were measured by RIA. The sensitivity and specificity of these measurements were: TPS in pleural fluid (cutoff 20,000 U/L): 0.21 and 0.98; TPS in serum (cutoff 300 U/L): 0.31 and 0.96; pleural fluid TPSI serum TPS ratio (cutoff 1200): 0.07 and 0.99. All these values enhanced the sensitivity of cytologic analysis of pleural fluid. However, we conclude that TPS assay in pleural fluid and serum, and the pleural fluid TPSI serum TPS ratio have limited diagnostic value in patients with pleural effusion.

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