GS112-2

Gram – Joint fluid:  polimorphonuclear cells (PMNs) + gram negative coccobacilli – Shipped August 2011

HISTORY

A smear simulating a joint fluid collected from a 3 year old ER patient with hot knee was sent to laboratories A, B, C, and C1 for Gram staining.

Participants were expected to report gram negative coccobacilli and the presence of PMNs.

MAIN EDUCATIONAL POINTS from GS112-2

  1. Septic arthritis is most often a consequence of occult bacteremia. Gram stain and culture of synovial fluid as well as blood cultures should be obtained in cases of suspected arthritis.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques, Gram