Gram – Joint Fluid: 4+ (>10/oif) neutrophils, 4+ (>50/oif) gram positive cocci (Staphylococcus aureus)
– Shipped February 20, 2017
A smear was made from a simulated joint fluid collected from an 18 year old football player and was sent to category A, B, C, and C1 laboratories.
Participants were expected to report the presence of neutrophils and gram positive cocci.
MAIN EDUCATIONAL POINTS from GS164-1
- Joint infections are medical emergencies requiring prompt recognition and management to preserve joint integrity. The rapid and accurate examination of Gram stains on joint fluid specimens is critical to support patient treatment decisions.
- Negative Gram stains have little predictive value to rule infection out, but a positive Gram stain is highly predictive of a positive culture.