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NeuroSurgery Conference. Clerk June 11, 2010 2-3 PM. ASSESSMENT. Left Fronto -Parietal Subdural Empyema secondary to left frontal sinusitis. DISCUSSION. CNS INFECTIONS. Meningitis – inflammation of the meninges of the brain or spinal cord Encephalitis – inflammation of the brain
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NeuroSurgery Conference Clerk June 11, 2010 2-3 PM
ASSESSMENT • Left Fronto-Parietal Subdural Empyema secondary to left frontal sinusitis
CNS INFECTIONS • Meningitis – inflammation of the meninges of the brain or spinal cord • Encephalitis – inflammation of the brain • Myelitis – inflammation of the spinal cord • Neuritis – inflammation of the peripheral nerves
CNS INFECTIONS • Brain abscess – focal intracranial suppuration in the brain substances • Subdural empyema – infection between dura mater and subarachnoid space • Epidural abscess – focal suppuration between skull and dura mater
CNS INFECTIONS • Three locations where infection may occur: • Subarachnoid Space • Subdural Space • Epidural Space
ROUTE OF INFECTION • Hematogenousspread • Direct foci of infection • Parenteral entry • Direct Extension • Sinusitis • Otitis • Mastoiditis • Dental Infections • Direct Introduction • Head trauma • Neurosurgical procedure • Lumbar puncture • Spinal anesthesia
SUBDURAL EMPYEMA • Collection of pus between the dura and arachnoid membranes
SUBDURAL EMPYEMA • 15-25% of focal suppurative CNS infections • SINUSITIS (Frontal Sinuses) – most common predisposing condition • Predilection to young males 3:1, 20-30’s • Complication of trauma or neurosurgery • Secondary infection
SIGNS AND SYMPTOMS • Hx of Chronic sinusitis or mastoiditis
MANAGEMENT • Medical Emergency • 3rd gen cephalosporin, vancomycin and metronidazole • Minimum of 4 weeks • Emergent neurosurgical evacuation • definitive step • Burr-hole drainage or craniotomy • Gram’s stain and culture
PROGNOSIS • Influenced by the ff: • Level of consciousness at hospitalization • Size • Time of intervention