M153-4

Ventriculo-peritoneal (VP) Shunt CSF: Staphylococcus epidermidis   –Shipped 02 November 2015

HISTORY

A simulated CSF specimen collected from 31 year old inpatient with hydrocephalus and ventriculo-peritoneal (VP) shunt was sent to category A laboratories.

Participants were expected to isolate and identify the isolate minimally as a coagulase negative staphylococcus or more definitively as Staphylococcus epidermidis. Laboratories were not expected to perform antimicrobial susceptibility testing for this challenge.

MAIN EDUCATIONAL POINTS from M153-4

  1. The isolation of an organism normally considered normal skin flora such as coagulase negative staphylococci should not be disregarded in the patient with the history of an implanted prosthetic device.

Full critique (PDF)

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