A Case Study: Discordant Results in Mycobacterial Culturing of Cardiac Bypass Heater-Cooler Machines—Seek and You May Find

Because of 3 cases of non-tuberculous mycobacterial (NTM) infections associated with cardiac surgery at our hospital and alerts released in 2015 implicating heater-cooler machines used during cardiopulmonary bypass, water sampling of our machines for NTM cultures is performed. While the first set of...

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Bibliographic Details
Published in:American journal of infection control 2016-06, Vol.44 (6), p.S50-S50
Main Authors: Hnatuck, Patricia, MT (ASCP), CIC, Brumbach, Arlene, MS, CIC, Stolberg, Dianne A., MPA, BSN, RN, CIC, Snyder, Rahn, RN, CIC, Baer, Larry, CCP, LP, Mincemoyer, Scott, RN, MSN, Whitener, Cynthia, MD, Julian, Kathleen G., MD
Format: Article
Language:English
Subjects:
Bacteria
Heart surgery
Heaters
Infection Control
Infectious Disease
Sampling
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Summary:Because of 3 cases of non-tuberculous mycobacterial (NTM) infections associated with cardiac surgery at our hospital and alerts released in 2015 implicating heater-cooler machines used during cardiopulmonary bypass, water sampling of our machines for NTM cultures is performed. While the first set of 6 water reservoir samples sent to Lab A are all negative for NTM, subsequent sampling performed 2 months later on the same machines and sent to Lab B are all positive for NTM. Do different collection and laboratory testing methods for NTM account for discordant results in organism recovery? Our experience of false-negative results from the first sampling session prompts a review of sampling and laboratory testing methods at Lab A and Lab B.
ISSN:0196-6553
1527-3296
DOI:10.1016/j.ajic.2016.04.042