Pathogens
Stenotrophomonas maltophilia

Stenotrophomonas maltophilia

Precautions

Standard Precautions

General Information

TMP/SMX

Typically causes colonization (e.g. airways) and no treatment needed unless isolated from a sterile site

  • Levofloxacin
  • Meropenem
  • Tigecycline
  • Doxycycline

Aerobic non-fermenting Gram negative rod

May be acquired from diverse environmental sources (i.e. tap water).

Bronchiectatics may be colonized (i.e. CF patients).

Must distinguish colonization from clinically significant infection.

Most common reason for isolation is colonization of the respiratory tract.

Most common true infections - blood stream infection (usually from vascular catheter) and pneumonia.

Other manifestations rare (endocarditis, sinusitis, cellulitis, etc)

True pneumonia more likely in ICU and oncology patients, those with advanced age and after/during treatment with broad spectrum antimicrobial use.