Bacterial meningitis CT: Difference between revisions
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{{CMG}}; {{AE}} {{AA}} | {{CMG}}; {{AE}} {{AA}} | ||
==Overview== | ==Overview == | ||
==CT scan== | ==CT scan== | ||
Routine screening with CT scan may not be indicated in all patients with bacterial meningitis. However, it may be indicated in patients with suspected case of bacterial meningitis to exclude mass lesions and increased intracranial pressure before a lumbar | Routine screening with CT scan may not be indicated in all patients with bacterial meningitis. However, it may be indicated in patients with suspected case of bacterial meningitis to exclude mass lesions and increased intracranial pressure before a lumbar puncture to prevent cerebral herniation. According to Infectious disease society of America guidelines 2004, the presence of following risk factors may necessitate the CT scan before undergoing lumbar puncture: | ||
*Papilledema | *[[Papilledema]] | ||
*Sudden onset seizures | *Sudden onset [[seizures]] | ||
*Known history of mass lesion or stroke | *Known history of mass lesion or stroke | ||
*Immunosuppression(HIV, organ transplant, steroid therapy ) | *Immunosuppression([[Human Immunodeficiency Virus (HIV)|HIV]], organ transplant, steroid therapy ) | ||
*Focal neurological deficit | *Focal neurological deficit | ||
*Altered level of consciousness | *Altered level of consciousness | ||
CT scan findings which may help diagnose patients with bacterial meningitis and its complications may include the following:<ref name=abc>https://radiopaedia.org/articles/leptomeningitis Accessed on Jan 9th, 2017</ref> | CT scan findings which may help diagnose patients with bacterial meningitis and its complications may include the following:<ref name=abc>https://radiopaedia.org/articles/leptomeningitis Accessed on Jan 9th, 2017</ref> | ||
*May be normal | *May be normal | ||
*Subtle hydrocephalus | *Subtle [[hydrocephalus]] | ||
*Hyperdensity around basal cisterns (tuberculous meningitis) | *Hyperdensity around basal cisterns (tuberculous meningitis) | ||
*Leptomeningeal enhancement | *Leptomeningeal enhancement | ||
*Complications (such as epidural empyema, subdural empyema, cerebritis or cerebral abscess, infarction, ventriculitis, dural sinus thrombosis) | *Complications (such as epidural empyema, [[subdural empyema]], [[cerebritis]] or [[cerebral abscess]], [[infarction]], [[ventriculitis]], [[dural sinus thrombosis]]) | ||
==References== | ==References== | ||
Revision as of 17:50, 9 January 2017
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Bacterial meningitis Microchapters |
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Diagnosis |
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Treatment |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aysha Anwar, M.B.B.S[2]
Overview
CT scan
Routine screening with CT scan may not be indicated in all patients with bacterial meningitis. However, it may be indicated in patients with suspected case of bacterial meningitis to exclude mass lesions and increased intracranial pressure before a lumbar puncture to prevent cerebral herniation. According to Infectious disease society of America guidelines 2004, the presence of following risk factors may necessitate the CT scan before undergoing lumbar puncture:
- Papilledema
- Sudden onset seizures
- Known history of mass lesion or stroke
- Immunosuppression(HIV, organ transplant, steroid therapy )
- Focal neurological deficit
- Altered level of consciousness
CT scan findings which may help diagnose patients with bacterial meningitis and its complications may include the following:[1]
- May be normal
- Subtle hydrocephalus
- Hyperdensity around basal cisterns (tuberculous meningitis)
- Leptomeningeal enhancement
- Complications (such as epidural empyema, subdural empyema, cerebritis or cerebral abscess, infarction, ventriculitis, dural sinus thrombosis)
References
- ↑ https://radiopaedia.org/articles/leptomeningitis Accessed on Jan 9th, 2017