M124-4

Intra-abdominal abscess aspirate fluid: Escherichia coli and Bacteroides fragilis  – Shipped February 2013

HISTORY

A simulated intra-abdominal abscess aspirate fluid from a 25 year old female patient was sent to category A laboratories.

Participants were expected to isolate and report Escherichia coli and Bacteroides fragilis. It was also expected the laboratories would report susceptibility results for both organisms or refer them for testing.

MAIN EDUCATIONAL POINTS from M124-4

  1. Most intra-abdominal infections are caused by organisms from the gastrointestinal flora and are typically polymicrobial in nature.
  2. Anaerobes have been isolated in 60% to 70% of intra-abdominal abscesses.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques