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"The implications of this study are critical," said Dr.
Harold Michels, Senior Vice President of the Copper Development Association (CDA). "Until now, the only attempts to reduce HAIs have required hand hygiene, increased cleaning and patient screening, which don't necessarily stop the growth of these bacteria the way copper alloy surfaces do. We now know that copper is the game-changer: it has the potential to save lives."
Intensive Care Units See the Benefit of Copper AlloysThe study, funded by the U.S. Department of Defense, was conducted in the Intensive Care Units (ICUs) of three major hospitals: The
Medical University of South Carolina, Memorial Sloan-Kettering Cancer Center in
New York City and the Ralph H. Johnson Veterans Affairs Medical Center in
Charleston, South Carolina. To determine the impact of copper alloy surfaces on the rate of HAIs, copper-surfaced objects were placed in each ICU, where patients are at higher risk due to the severity of their illnesses, invasive procedures and frequent interaction with healthcare workers. Patients were randomly placed in available rooms with or without copper alloy surfaces, and the rates of HAIs were compared. A total of 650 patients and 16 rooms (8 copper and 8 standard) were studied between
July 12, 2010 and
June 14, 2011.
Results of this study, that appeared last July in the
Journal of Clinical Microbiology, found that Antimicrobial Copper can continuously
kill 83% of bacteria that cause HAIs within two hours, including strands resistant to antibiotics. The study compared copper to equivalent non-copper touch surfaces during active patient care between routine cleaning and sanitizing.
"Copper alloy surfaces
offer an alternative way to reduce the increasing number of HAIs, without having to worry about changing healthcare worker behavior," said Dr.
Michael Schmidt, Vice Chairman of Microbiology and Immunology at the
Medical University of South Carolina and one of the authors of the study. "Because the antimicrobial effect is a continuous property of copper, the regrowth of deadly bacteria is significantly less on these surfaces, making a safer environment for hospital patients."
In study results, 46 patients developed an HAI, while 26 patients became colonized with MRSA or VRE. Overall, the proportion of patients who developed an HAI was significantly lower among those assigned to intensive care rooms with objects fabricated using copper alloys. There are currently hundreds of Antimicrobial Copper healthcare-related products available today, including IV poles, stretchers, tray tables and door hardware.