What are the common infectious agents (pathogens) of meningitis in patients with trauma or who are undergoing neurosurgery?

Updated: Jul 16, 2019
  • Author: Rodrigo Hasbun, MD, MPH; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

In patients who have had trauma or neurosurgery, the most common microorganisms are S pneumoniae (if CSF leak is present), Staphylococcus aureus, enterobacteria, and Pseudomonas aeruginosa. In patients with an infected ventriculoperitoneal (atrial) shunt, the most common microorganisms are Staphylococcus epidermidis, S aureus, enterobacteria, Propionibacterium acnes, and diphtheroids (rare). Consultation with a neurosurgeon is indicated; early shunt removal is usually necessary for cure.


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