In patients with tuberculous meningitis, the CSF is characterized by a predominantly lymphocytic pleocytosis; an elevated protein level, especially if a CSF block is present; and a low glucose level (< 40 mg/dL).
What will be CSF findings in tuberculous meningitis?
Characteristic cerebrospinal fluid (CSF) findings of TBM include a lymphocytic-predominant pleiocytosis, elevated protein, and low glucose. CSF acid-fast smear and culture have relatively low sensitivity but yield is increased with multiple, large volume samples.
What is the color of CSF in TB meningitis?
Conclusions: Clear CSF with colorless appearance, lymphocyte pleocytosis, high protein level, and low CSF glucose as well as blood glucose ratio remain typical CSF characteristics of TBM patients found at the Department of Neurosurgery, Dr.
How do you test for TB in CSF?
tuberculosis) DNA can be detected in CSF using polymerase chain reaction (PCR). However, due to a high rate of false-positive results and exacting experimental conditions, PCR is unlikely to be widely used in underdeveloped areas. A newly developed ELISPOT-technique test, T-SPOT.
What is tuberculosis meningitis?
Tuberculous Meningitis (TBM) is a form of meningitis characterized by inflammation of the membranes (meninges) around the brain or spinal cord and caused by a specific bacterium known as Mycobacterium tuberculosis. In TBM, the disorder develops gradually.
Why is CSF glucose low in bacterial meningitis?
The reason for the reduced glucose levels associated with bacterial meningitis was believed to be the need for glucose as fuel by infiltrating immune cells in response to infection. However, the possibility that the bacteria itself could manipulate glucose concentrations in the brain had not been explored before now.
How do they test for TB meningitis?
Definitive diagnosis of tuberculous meningitis can be made by demonstration of mycobacteria in cerebrospinal fluid (CSF), by direct staining or culture. However, these tests are time consuming and seldom positive.
