Spontaneous gram-negative meningitis: Difference between revisions

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(Created page with "== Background == === Microbiology === * Most commonly caused by Escherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter * Also Citrobacter, Serratia marcescens, Enterobacter, and Proteus mirabilis === Risk Factosr === * Diabetes mellitus * Cirrhosis * End-stage renal disease * Substance abuse, including alcohol use disorder * Cancer Category:CNS infections")
 
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* Most commonly caused by [[Escherichia coli]], [[Klebsiella pneumoniae]], [[Pseudomonas aeruginosa]], and [[Acinetobacter]]
* Most commonly caused by [[Escherichia coli]], [[Klebsiella pneumoniae]], [[Pseudomonas aeruginosa]], and [[Acinetobacter]]
* Also [[Citrobacter]], [[Serratia marcescens]], [[Enterobacter]], and [[Proteus mirabilis]]
* Also [[Citrobacter]], [[Serratia marcescens]], [[Enterobacter]], and [[Proteus mirabilis]]
* Typically excludes usual causes of meningitis such as [[Haemophilus]] or [[Neisseria]]


=== Risk Factosr ===
=== Risk Factors ===


* Diabetes mellitus
* [[Diabetes mellitus]]
* Cirrhosis
* [[Cirrhosis]]
* End-stage renal disease
* [[End-stage renal disease]]
* Substance abuse, including alcohol use disorder
* [[Substance abuse]], including [[alcohol use disorder]]
* Cancer
* [[Cancer]]


== Clinical Presentation ==

* As per other forms of [[bacterial meningitis]]

== Management ==

* CNS dosed antibiotics to complete 21 days is typically sufficient
{| class="wikitable sortable"
!Organism
!First-line
!Second-line
!Duration
|-
|''[[E. coli]]'' and other [[Enterobacteriaceae]]||third-generation cephalosporin||[[ampicillin]], [[meropenem]], [[aztreonam]], [[TMP-SMX]], or [[ciprofloxacin]]
| rowspan="3" |21 days
|-
|''[[Pseudomonas aeruginosa]]''||[[cefipime]] or [[ceftazidime]]||[[meropenem]], [[aztreonam]], or [[ciprofloxacin]]
|-
|ESBL Gram-negative bacillus||[[meropenem]]||[[cefepime]] or a fluoroquinolone
|}
[[Category:CNS infections]]
[[Category:CNS infections]]

Latest revision as of 16:27, 19 July 2023

Background

Microbiology

Risk Factors

Clinical Presentation

Management

  • CNS dosed antibiotics to complete 21 days is typically sufficient
Organism First-line Second-line Duration
E. coli and other Enterobacteriaceae third-generation cephalosporin ampicillin, meropenem, aztreonam, TMP-SMX, or ciprofloxacin 21 days
Pseudomonas aeruginosa cefipime or ceftazidime meropenem, aztreonam, or ciprofloxacin
ESBL Gram-negative bacillus meropenem cefepime or a fluoroquinolone