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Archives 2006
Myanmar Health Sciences Research Journal
Volume 18, Number 1
TITLE: Diagnostic significance of fibrin(-ogen) degradation products in cerebrospinal fluid in childhood meningitis.
AUTHOR: Ne Win; Khine-Hla Myint ; Thein Thein Myint; Than Nu Shwe; Aye Maung Han; Aye Aye Lwin; Minn Minn Myint Thu; Tin Htar Nwe
SOURCE: Myanmar Health Sciences Research Journal. 2006; 18(1): 6-12
ABSTRACT: Fibrin(-ogen) degradation products (FDP) was determined in cerebrospinal fluid (CSF) of 106 children suffering from meningitis (35 tuberculous, 37 pyogenic, and 34 non-bacterial meningitis) by using a locally developed test kit (DMR-FDP test kit). Generally diagnosis of different meningitis is made clinically, supported by routine examination of CSF (CSF-RE). The sensitivity of the test kit is 2 µg/ml fibrinogen equivalent. FDP content is determined semi-quantitatively by the doubling dilution of CSF and described as 0, 2, 4, 8, 16, 32, 64, 128, 256, and 512 µg/ml. Overall FDP content in CSF was ranging from 0-512 µg/ml. It varied with the type of meningitis: 0-8 µg/ml in non-bacterial meningitis, and ≥16 µg/ml in bacterial meningitis. CSF-FDP content was always ≤8 µg/ml in all of non-bacterial meningitis cases (34/34; 100%). In 35 TBM cases, 34 cases have 16-64 µg/ml, 1 case 128 µg/ml. In 37 pyogenic meningitis cases, 10 have 64 µg/ml and 27 have ≥128 µg/ml. Statistically, CSF-FDP level of 0-8 µg/ml has 100% sensitivity for non-bacterial meningitis; 16-64 µg/ml has 97.1% sensitivity for TB meningitis; and ≥128 µg/ml has 72.9% sensitivity for pyogenic meningitis. This study could define a cut-off point: CSF-FDP content, >8 µg/ml for bacterial meningitis and ≤8 µg/ml for non-bacterial meningitis and could also differentiate a meningitis case into different types: (i) nonbacterial meningitis when CSF-FDP ≤8 µg/ml and bacterial when ≥16µg/ml, (ii) tuberculous when 16-64 µg/ml, and (iii) pyogenic meningitis when ≥128 µg/ml. In conclusion, determination of FDP content in CSF by DMR-FDP test kit greatly facilitates the differential diagnoses of meningitis in children and it will be of great benefit to the clinicians, particularly at the health centers where and/or when laboratory facilities for CSF-RE are inefficient. The CSF-FDP should be measured routinely in children with meningitis and is suggested to be included in CSF-RE as an additional biochemical parameter to other conventional tests.
SUBJECT HEADINGS: Fibrin Fibrinogen Degradation Products. Meningitis. Cerebrospinal Fluid.
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