Cleaning & Maintenance Management Online

Study: <i>Acinetobacter baumannii</i> in almost half of infected patient rooms

December 1, 2011

COLLEGE PARK, MD — When University of Maryland (UMD) School of Medicine researchers sampled 10 surfaces in each of 50 rooms, multidrug-resistant Acinetobacter baumannii (MDR-AB) was found in 48 percent of rooms, according to a press release.

Surfaces sampled included doorknobs, bedrails, bedside tables, vital-sign-monitor touchpads, nurse call buttons, sinks, supply-cart drawer handles, infusion pumps, ventilator touchpads and floors near beds, the release stated.

According to the release, most commonly contaminated were:

• Supply cart drawer handles (20 percent)
• Infusion pumps (14 percent)
• Ventilator touchpads (11.4 percent)

In independent research, two studies, each using five individual test surfaces, evaluated the disinfecting capability of a novel steam vapor disinfection system — thermo accelerated nano crystal sanitation (TANCS) by Advanced Vapor Technologies — on surfaces colonized by Acinetobacter baumannii, the release noted.

"Very brief treatments of the surface produced substantial reductions in the pathogen load; more than 97.5 percent of bacteria were killed within the first two seconds of treatment," noted Benjamin Tanner, PhD, chief researcher and principal of Antimicrobial Test Laboratories.

"Total disinfection of Acinetobacter baumannii on surfaces occurred within five seconds in both trials," Tanner added.

Click here to read the complete release.