M142-4

Blood culture: Granulicatella adiacens (Nutritionally variant streptococci) – Shipped August 2014

HISTORY

A simulated blood culture obtained from a 52 year old male in-patient with a heart murmur was sent to category A laboratories.

Participants were expected to isolate and identify Granulicatella adiacens.

MAIN EDUCATIONAL POINTS from M142-4

  1. Granulicatella adiacens and other nutritionally variant streptococci (e.g. Abiotrophia defectiva, other Granulicatella species) are infrequent but important isolates from blood cultures.
  2. Media or techniques (e.g. chocolate agar or a streak of Staphylococcus aureus) that allow for these organisms to be isolated from blood cultures should be routinely used.

Full critique (PDF)

Posted in Clinical Bacteriology Results, critiques