Naegleria fowleri: Difference between revisions

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Naegleria fowleri
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* CDC recommendations are:
 
* CDC recommendations are:
 
** [[Is treated by::Amphotericin B]] 0.75 mg/kg IV q12h for three days followed by 1 mg/kg IV daily for 11 days, followed by
 
** [[Is treated by::Amphotericin B]] 0.75 mg/kg IV q12h for three days followed by 1 mg/kg IV daily for 11 days, followed by
  +
** [[Is treated by::Amphotericin B]] 1.5 mg intrathecal once daily for 2 days followed by 1 mg intrathecal q2d for 8 days, followed by
 
** [[Is treated by::Azithromycin]] 10 mg/kg (max 500 mg) PO/IV daily, plus [[Is treated by::fluconazole]] 10 mg/kg (max 600 mg) PO/IV daily, plus [[Is treated by::rifampin]] 10 mg/kg (max 600 mg) PO/IV daily, plus [[Is treated by::miltefosine]] 50 mg PO bid or tid for 28 days, with [[Is treated by::dexamethasone]] 0.15 mg/kg IV q6h during the initial 4 days
 
** [[Is treated by::Azithromycin]] 10 mg/kg (max 500 mg) PO/IV daily, plus [[Is treated by::fluconazole]] 10 mg/kg (max 600 mg) PO/IV daily, plus [[Is treated by::rifampin]] 10 mg/kg (max 600 mg) PO/IV daily, plus [[Is treated by::miltefosine]] 50 mg PO bid or tid for 28 days, with [[Is treated by::dexamethasone]] 0.15 mg/kg IV q6h during the initial 4 days
 
{{DISPLAYTITLE:''Naegleria fowleri''}}
 
{{DISPLAYTITLE:''Naegleria fowleri''}}

Revision as of 22:31, 3 June 2020

Background

Microbiology

Epidemiology

  • Found in warm fresh-water, including southern US

Clinical Presentation

  • Causes acute, aggressive primary amebic meningoencephalitis (PAM)
  • Infection (PAM) is rapidly-progressing and almost uniformly fatal (141/145 cases in the US)

Management

  • Unclear optimal management
  • CDC recommendations are:
    • Amphotericin B 0.75 mg/kg IV q12h for three days followed by 1 mg/kg IV daily for 11 days, followed by
    • Amphotericin B 1.5 mg intrathecal once daily for 2 days followed by 1 mg intrathecal q2d for 8 days, followed by
    • Azithromycin 10 mg/kg (max 500 mg) PO/IV daily, plus fluconazole 10 mg/kg (max 600 mg) PO/IV daily, plus rifampin 10 mg/kg (max 600 mg) PO/IV daily, plus miltefosine 50 mg PO bid or tid for 28 days, with dexamethasone 0.15 mg/kg IV q6h during the initial 4 days
  • Note that the recommendation is specifically for conventional rather than liposomal amphotericin B
  • Miltefosine dosing is bid if weight <45 kg and tid if weight ≥45 kg