nursing home residents are colonized with drug-resistant bacteria

nursing home residents are colonized with drug-resistant bacteria – 27th April, 2017

The significant presence of multidrug-resistant gram-negative bacteria (MDR-GNB), such as E. coli, among nursing home residents demonstrates the need for heightened infection control prevention and control measures in nursing homes, according to a meta-analysis published in the May issue of the American Journal of Infection Control, the official journal of the Association for Professionals in Infection Control and Epidemiology (APIC).

The systematic literature review and meta-analysis, conducted by Sainfer Aliyu, MPhil, MSEd, MHPM, BSN, RN, and others at the Columbia University School of Nursing, found the prevalence of MDR-GNB colonization among sampled nursing home residents ranged from 11.2 percent to 59.1 percent, with a pooled average of 27 percent. Researchers also found that nine of the 12 studies involved identified specific factors that are associated with increased MDR-GNB colonization risk, including advanced age, gender, comorbid chronic diseases, history of recurrent hospitalization, increased interaction with healthcare workers, frequent antimicrobial exposure, delayed initiation of effective antibiotic therapy, presence of medical devices, decreased functional status, advanced dementia, nonambulatory status, fecal incontinence, severe sepsis present on admission, and residency in a long-term care facility.

The study is thought to be the first systematic review and meta-analysis of its kind, and should raise concerns among infection control professionals and nursing home facilities.

“This study underscores the importance of having strong infection prevention programs in all nursing homes and long-term care facilities,” said 2017 APIC President Linda Greene, RN, MPS, CIC, FAPIC. “Understanding the dynamics and cause of MDR-GNB transmission is crucial to identifying effective infection control strategies specific to these settings.”

Nursing home residents are especially vulnerable to infections due to multiple comorbidities, advanced age, and immune dysfunction. In addition, living in a nursing home is itself considered a risk factor, as frequent transfers from nursing homes to acute care contribute to the influx of pathogens into hospital settings.

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