What is the role of CT scanning in the workup of Haemophilus influenzae infections?

Updated: Jun 11, 2021
  • Author: Joseph Adrian L Buensalido, MD; Chief Editor: Pranatharthi Haran Chandrasekar, MBBS, MD  more...
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Answer

In meningitis, a CT scan of the head is not required routinely.

In infants and children with suspected bacterial meningitis, CT scanning of the head is recommended before lumbar puncture in patients with the following [1] :

  • Immunocompromise
  • History of selected CNS disease, particularly those with CSF shunts, hydrocephalus, space-occupying lesions, history of trauma, post-neurosurgery
  • Papilledema
  • Selected focal neurologic deficits, but not cranial nerve palsy of VI or VII
  • Delayed diagnostic lumbar puncture

In adults with suspected bacterial meningitis, CT scanning is recommended before lumbar puncture in patients with the following [1] :

  • Immunocompromise
  • History of CNS disease
  • Newly onset seizure
  • Papilledema
  • Altered consciousness
  • Focal neurologic deficit
  • Delayed diagnostic lumbar puncture

In addition, a head CT scan may help identify subdural effusion.

In patients with orbital cellulitis, a CT scan of the head is useful in delineating the extent of the lesion.


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