title: Differentiation of tuberculous meningitis from acute bacterial meningitis using simple clinical and laboratory parameters.
abstract: Tuberculous meningitis (TBM) is still a major cause of serious illness in many parts of the world. The newer diagnostic tests and neuroimaging methods are unlikely to be available in many developing countries. We attempt to identify simple parameters for early diagnosis. A retrospective study was performed to compare the clinical and laboratory features of cultured-confirmed, TBM (134) and other bacterial meningitis (709). Features independently predictive of TBM were studied by multivariate logistic regression to develop a diagnostic rule. Six features were found predictive: length of clinical history >5 days, headache, total cerebrospinal fluid (CSF) white blood cell count of <1000/mm3, clear appearance of CSF, lymphocyte proportion of >30%, and protein content of >100 mg/dL. Application of 3 or more parameters revealed 93% sensitivity and 77% specificity. Applying this diagnostic rule can help in the early diagnosis of TBM, in both children and adults.
authors.affiliation: Disease Surveillance Program, U.S. Naval Medical Research Unit No.3, Cairo, Egypt. yousseff@namru3.med.navy.mil
authors.forename: Fouad G
authors.initials: FG
authors.lastname: Youssef
authors.forename: Salma A
authors.initials: SA
authors.lastname: Afifi
authors.forename: Adel M
authors.initials: AM
authors.lastname: Azab
authors.forename: Momtaz M
authors.initials: MM
authors.lastname: Wasfy
authors.forename: Khalid M
authors.initials: KM
authors.lastname: Abdel-Aziz
authors.forename: Tina M
authors.initials: TM
authors.lastname: Parker
authors.forename: Saeid A
authors.initials: SA
authors.lastname: Oun
authors.forename: Nishith N
authors.initials: NN
authors.lastname: Jobanputra
authors.forename: Rana A
authors.initials: RA
authors.lastname: Hajjeh
mesh_terms: D000293:Adolescent; D000328:Adult; D002555:Cerebrospinal Fluid / Q000737:chemistry / Q000166:cytology; D002648:Child; D002675:Child, Preschool; D003663:Decision Trees; D003937:Diagnosis, Differential; D004534:Egypt; D006801:Humans; D007223:Infant; D007958:Leukocyte Count; D016920:Meningitis, Bacterial / Q000175:diagnosis*; D012372:ROC Curve; D012044:Regression Analysis; D012189:Retrospective Studies; D014390:Tuberculosis, Meningeal / Q000175:diagnosis*