G112

Gram – Sputum: 4+ PMN/ no epithelial cells, gram negative bacilli (Serratia) – Shipped August 2011

HISTORY

A smear simulating sputum collected from a 62 year old female in-patient with COPD, cough, and fever was sent to category A, B, C, and C1 laboratories for Gram staining.

Participants were expected to comment on the suitability of the sample for culture and report the presence of abundant PMNs and gram negative bacilli.

MAIN EDUCATIONAL POINTS from G112

  1. The sputum’s Gram stain is done firstly to determine suitability of the specimen for culture and secondly to provide initial rapid results on the type of inflammatory response present and possible bacterial etiology for a lower respiratory tract infection.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques, Gram