Posttraumatic meningitis: bacteriology, hydrocephalus, and outcome

Area of Science:

• Neuroscience
• Infectious Diseases
• Pharmacology

Background:

• Posttraumatic meningitis is a serious complication following head injuries.
• Understanding treatment outcomes with novel antibiotics is crucial for patient management.

Purpose of the Study:

• To evaluate the efficacy and complications of new antibiotic treatments for posttraumatic meningitis.
• To identify common pathogens and their antibiotic sensitivities in this patient cohort.

Main Methods:

• Retrospective study of 860 patients with moderate to severe head injuries over 68 months.
• Analysis of 12 cases (1.39%) who developed posttraumatic meningitis.
• Identification of causative agents and assessment of antibiotic susceptibility patterns.

Main Results:

• Gram-positive cocci and Gram-negative bacilli were the primary pathogens.
• Gram-negative strains showed resistance to ampicillin and cephalosporins but sensitivity to imipenem and ciprofloxacin.
• Gram-positive strains were sensitive to vancomycin.
• Two patients developed hydrocephalus after intrathecal amikacin infusions.
• All patients survived the infection.

Conclusions:

• Posttraumatic meningitis, while serious, is currently a nonfatal complication of head injury.
• Imipenem and ciprofloxacin are effective against resistant Gram-negative bacteria causing meningitis.
• Intrathecal amikacin may be associated with hydrocephalus development.