Annals of Tropical Medicine and Public Health
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Year : 2017  |  Volume : 10  |  Issue : 3  |  Page : 544-550

Study of adenosine deaminase levels in Tb meningitis and its comparision with other types of meningitis

Department of General Medicine, Narayana Medical College and Hospital, Nellore, Andhra Pradesh, India

Correspondence Address:
K B Chetan Reddy
Sai Shankar Apartments, C.CE. Colony, Hyderabad, Telangana
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1755-6783.213172

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Tubercular meningitis is a type of septic meningitis and is a significant cause of morbidity and mortality in developing countries like India due to lack of early and timely diagnosis and so the case of fatality remains higher. Cerebrospinal fluid (CSF) evaluation is single most important aspect of lab diagnosis in meningitis. Aims: 1. To evaluate the diagnostic significance of CSF adenosine deaminase (ADA) activity in tuberculous meningitis. 2. To compare the values of CSF ADA in different types of meningitis and with that of controls. Materials and Methods: It was clinical cross-sectional study of 25 cases of tuberculosis, 25 cases of pyogenic meningitis, and 25 cases of aseptic meningitis. Twenty five controls with age and sex matched individuals without evidence of any neurological diseases served as control for CSF ADA. Results: In this study of 100 patients, 25 (100%) patients of the tubercular group had CSF ADA levels of more than 10 IU/dL with a mean of 13.68 IU/dL with 80% of the patients having ADA levels between 11 and 15 IU/dL. Mean ADA levels of aseptic meningitis was 8.00 IU/dL, pyogenic was 5.76 IU/dL, and control group had mean ADA of 2.12 IU/dL. Conclusion: All patients with tuberculous meningitis had elevated CSF ADA activity. CSF ADA activity in tuberculous meningitis was significantly higher when compared with pyogenic meningitis, aseptic meningitis, and controls.

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