How often are gram-negative organisms, gram-positive organisms, and polymicrobial invasion found on culture in acute bacterial rhinosinusitis (sinus infection)?

Updated: Mar 01, 2018
  • Author: Itzhak Brook, MD, MSc; Chief Editor: Michael Stuart Bronze, MD  more...
  • Print
Answer

Gram-negative organisms, including Pseudomonas aeruginosa (15.9%), Escherichia coli (7.6%), Proteus mirabilis (7.2%), Klebsiella pneumoniae, and Enterobacter species, predominate in nosocomial sinusitis, accounting for 60% of cases. Polymicrobial invasion is seen in 25-100% of cultures. The other pathogenic organisms found in nosocomial patients are gram-positive organisms (31%) and fungi (8.5%).


Did this answer your question?
Additional feedback? (Optional)
Thank you for your feedback!