M142-2

Wound: Pseudomonas aeruginosa, Streptococcus agalactiae, Bacillus species  – Shipped August 2014

HISTORY

A simulated foot drainage swab collected from a 73 year old diabetic patient was sent to category A and B laboratories.

Participants were expected to isolate and report Pseudomonas aeruginosa and group B strepto-coccus and to perform and report antimicrobial susceptibility on the P. aeruginosa isolate.

It was also expected that laboratories would correlate the results obtained for this culture with those of G142.

MAIN EDUCATIONAL POINTS from M142-2

  1. Diabetic foot infections are often polymicrobial. Diagnosis may be delayed because patients may not recognize the injury or the onset of an infection.
  2. It is important to correlate culture results with morphotypes seen in Gram-stained smears.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques