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Published on: February 9, 2011
Acinetobacter species meningitis in children: a case series from Karachi, Pakistan
Ali Faisal Saleem1, Muhammad Shafaat Shah, Abdul Sattar Shaikh
1The Aga Khan University Hospital, Karachi, Pakistan. ali.saleem@aku.edu
Introduction:
Multidrug-resistant strains of Acinetobacter pose a serious therapeutic dilemma in hospital practice, particularly when they cause meningitis, as the few antimicrobial agents to which these isolates are susceptible have poor central nervous system (CNS) penetration.
Methodology:
We retrospectively reviewed the clinical course and outcome of eight consecutive cases of meningitis due to Acinetobacter spp. in children ages 15 years or less, seen in a tertiary care medical center in Karachi, Pakistan.
Results:
Of the eight cases of Acinetobacter meningitis, isolates from five patients were pan-resistant, and two were multidrug-resistant. A neurosurgical procedure was performed in five of eight patients followed by external ventricular drain insertion prior to the development of infection. Seven received intravenous (IV) polymyxin (mean; 12.8 days), while 5/8 also received intrathecal (IT) polymyxin (mean; 12.0 days). The mean length of hospitalization was 38.7 ± 19 days. All patients achieved cerebrospinal fluid (CSF) culture negativity by the end of treatment (mean; 5.4 days). Two patients died: one with pan-resistant Acinetobacter, and the second with a multi-drug resistant isolate.
Conclusion:
Post-neurosurgical multidrug-resistant and pan-resistant Acinetobacter meningitis can be successfully treated if appropriate antimicrobial therapy is instituted early. The role of IT polymyxin B administration alone versus combination therapy (IV and IT) needs further study.
Insights
Treating multidrug-resistant Acinetobacter meningitis in children, especially post-neurosurgery, requires early antimicrobial therapy. Intrathecal polymyxin B shows promise for Acinetobacter CNS infections.
Area of Science:
- Pediatric Infectious Diseases
- Neurocritical Care
- Antimicrobial Resistance
Background:
- Multidrug-resistant Acinetobacter infections, particularly meningitis, present significant treatment challenges due to limited effective antibiotics with central nervous system (CNS) penetration.
- Acinetobacter meningitis in children is rare but poses a serious threat, especially in hospital settings.
Observation:
- A retrospective review of eight pediatric cases of Acinetobacter meningitis in Pakistan was conducted.
- Five patients had pan-resistant isolates, and two had multidrug-resistant isolates.
- Five patients underwent neurosurgery with external ventricular drain (EVD) placement prior to meningitis diagnosis.
Findings:
- Intravenous (IV) and intrathecal (IT) polymyxin B was administered to most patients, achieving cerebrospinal fluid (CSF) culture negativity in all.
- Mortality occurred in two patients, one with pan-resistant and one with multidrug-resistant Acinetobacter.
- Successful treatment was achieved in most cases, with a mean hospitalization of 38.7 days.
Implications:
- Early and appropriate antimicrobial therapy, including IT polymyxin B, can be effective for treating challenging Acinetobacter meningitis in pediatric neurosurgical patients.
- Further research is needed to define the optimal role of IT polymyxin B, whether as monotherapy or combination therapy.
- This study highlights the potential for successful management of severe Acinetobacter CNS infections with targeted antimicrobial strategies.
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