A study of infection in elderly nursing/residential home and community-based residents

The scope of antimicrobial resistance in residential aged care facilities determined through analysis of Escherichia coli and the total wastewater resistome

IMPORTANCE

Antimicrobial resistance (AMR) is a global threat that imposes a heavy burden on our health and economy. Residential aged care facilities (RACFs), where frequent inappropriate antibiotic use creates a selective environment that promotes the development of bacterial resistance, significantly contribute to this problem. We used wastewater-based epidemiology to provide a holistic whole-facility assessment and comparison of antimicrobial resistance in two RACFs and a retirement village. Resistant Escherichia coli, a common and oftentimes problematic pathogen within RACFs, was isolated from the wastewater, and the phenotypic and genotypic AMR was determined for all isolates. We observed a high prevalence of an international high-risk clone, carrying an extended-spectrum beta-lactamase in one facility. Analysis of the entire resistome also revealed a greater number of mobile resistance genes in this facility. Finally, both facilities displayed high fluoroquinolone resistance rates-a worrying trend seen globally despite measures in place aimed at limiting their use.

A review of infection control in community healthcare: new challenges but old foes

The demographics of the healthcare population are changing, with an ever-greater proportion of people being treated outside the traditional hospital setting through community healthcare. This shift in the way that healthcare is delivered raises new concerns over community healthcare-associated infections (HCAIs). A literature search between 2000 and December 2013 was conducted in databases including PubMed, SciVerse ScienceDirect and Google Scholar. National and international guideline and policy documents were searched using Google. Many terms were used in the literature searches, including ‘nosocomial’, ‘healthcare infection’, ‘community’ and ‘nursing home’. The rates of HCAI in community healthcare are similar to the rates found in the acute hospital setting, but the types of infection differ, with a greater focus on urinary tract infections (UTIs) in the community and ventilator-associated pneumonias in the hospital setting. Patients who acquire a community HCAI are more likely to exhibit reduced physical condition, have increased levels of morbidity and have higher mortality rates than individuals without infection. Infection control programmes have been developed worldwide to reduce the rates of hospital HCAIs. Such interventions are equally as valid in the community, but how best to implement them and their subsequent impact are much less well understood. The future is clear: HCAIs in the community are going to become an ever-increasing burden and it is critical that our approach to these infections is brought quickly in line with present hospital sector standards.

Reducing inappropriate antibiotic prescribing in the residential care setting: current perspectives

Residential aged care facilities are increasingly identified as having a high burden of infection, resulting in subsequent antibiotic use, compounded by the complexity of patient demographics and medical care. Of particular concern is the recent emergence of multidrug-resistant organisms among this vulnerable population. Accordingly, antimicrobial stewardship (AMS) programs have started to be introduced into the residential aged care facilities setting to promote judicious antimicrobial use. However, to successfully implement AMS programs, there are unique challenges pertaining to this resource-limited setting that need to be addressed. In this review, we summarize the epidemiology of infections in this population and review studies that explore antibiotic use and prescribing patterns. Specific attention is paid to issues relating to inappropriate or suboptimal antibiotic prescribing to guide future AMS interventions.

Bacterial infection in elderly nursing home and community-based patients: a prospective cohort study

PURPOSE

The aim of the study was to assess differences between elderly nursing home (NH) residents and elderly patients living in the community admitted to hospital for bacterial infection.

METHODS

We conducted a prospective cohort study with manual data collection. Patients aged 65 years and older from NHs and from the community admitted to hospital for bacterial infection were included in the study. Patient characteristics, site of infection, microorganism profile, and final outcome were assessed and compared between these two subgroups of patients.

RESULTS

Two hundred and sixty-two patients were from NHs and 707 were from the community. Patients from NHs were older, had more underlying chronic illnesses, and more often showed characteristics indicating advanced debility. In both groups, the most common site of infection was the respiratory tract. In comparison to the community group, patients from NHs had a higher fatality rate (23.3 vs. 10.9%) and more often experienced functional decline at discharge (27.5 vs. 16.8%). After adjustment for age, sex, presence of comorbidity, and debility, NH residence remained associated with increased in-hospital mortality but not with functional decline.

CONCLUSIONS

Elderly patients from NHs admitted to hospital for bacterial infection are older and more debilitated than their counterparts from the community. Microorganisms found in the NH residents are somewhat different from those in the community dwellers. The community dwellers had a better survival rate than those admitted from the NHs after adjusting for age, sex, presence of any comorbidity, and debility.

[Repeated prevalence investigations of nursing home-associated infections as a tool to assess the hygienic quality of care]

The rate of healthcare-associated infections can be regarded as an important outcome parameter of the hygienic quality of care in nursing homes. Our study aimed to evaluate the applicability of repeated prevalence investigations as a tool for surveillance of healthcare-associated infections in nursing homes. From December 2006 to September 2007 a total of five prevalence investigations were conducted in four nursing homes each (n=2,369 residents). Initially, defined structural and procedural parameters of the hygienic quality of the four nursing homes were evaluated based on a detailed inspection and a checklist including 40 parameters. The results showed a uniformly high level of the hygienic quality with only minor variation (mean 84%, range 75%-93% of parameters fulfilled). In total, the prevalence of healthcare-associated infections was 6.8%, with a marked increase with higher categories of dependency (3.5%, 4.0%, 8.5%, and 12.3%, respectively, in the categories 0, I, II, and III of the German grading of skilled nursing care). Respiratory tract (4.1%), skin/soft tissue (1.5%), and urinary tract infections were the most prevalent healthcare-associated infections. Respiratory tract infections showed a marked seasonal pattern. During the second prevalence investigation (February 2007), an outbreak of upper respiratory tract infections occurred in one of the nursing homes (attack rate, 17%). The crude prevalence rates showed considerable differences between the four nursing homes; however, after adjusting for the different categories of dependency, the standardized infection rates (SIR) were largely comparable (excluding the outbreak). After inclusion of the outbreak, the SIR of the specific nursing home was significantly higher compared to all other nursing homes. In conclusion, our study shows that repeated prevalence investigations can be an easy to use tool for surveillance of healthcare-associated infections as a surrogate parameter of the hygienic quality in nursing homes. This implies a knowledge of the seasonality of specific infections and a risk adjustment according to the categories of dependency. The primary intention of surveillance should be the identification of hygienic problems. However, the resources should preferentially be focused on hygienic structures and processes.

Incidence of hospital-acquired infections in Italian long-term-care facilities: a prospective six-month surveillance

This study presents results from a six-month prospective surveillance of hospital-acquired infections in four Italian long-term-care facilities (LTCFs). Eight hundred and fifty-nine patients were enrolled and 21 503 person-days were observed. Two hundred and fifty-four hospital-acquired infections (HAIs) occurred in 188 patients. The overall infection rate was 11.8 per 1000 person-days. The most frequent infections were urinary tract infections (3.2 per 1000 person-days), lower respiratory tract infections (2.7 per 1000 person-days) and skin infections (2.5 per 1000 person-days). Risks related to HAI in a multi-variate regression model were: length of stay >or=28 days [odds ratio (OR) 3.5, 95% confidence intervals (CI) 2.4-5.0]; presence of a device (OR 2.0, 95%CI 1.3-3.0); Norton scale <12 (OR 1.8, 95%CI 1.2-2.6); and being bedridden (OR 1.7, 95%CI 1.08-2.6). The presence of HAI increased the median length of stay (31 days vs 20 days, P<0.01) without a significant influence on fatal outcome (OR 1.4, 95%CI 0.7-2.7).

District nurses' experiences of providing care in residential care home settings

Little research describes the involvement and contribution of primary health care services in residential homes, despite policy and research concerns that older people in residential homes are a vulnerable population for whom care must be improved. The aim of this research was to explore the actual and potential contribution of primary care nurses in residential homes for older people, particularly district nurses. Five focus groups were held with district nurses in one county in England, to explore how participants represented their views, values and experiences of working in residential homes. Our major finding was the importance of context in shaping the experience of district nursing involvement. General practitioner attachment determined the frequency of visiting homes and affected workload. District nurses had regular contact with residential homes for discrete nursing tasks, but appropriateness of referrals and input was not agreed. The focus group discussions with district nurses revealed how problematic their work in residential homes was and a lack of consensus about their role. The data suggested that uncertainty about providing care in a setting that straddles the health and social care, public and private divide, and anxieties about managing their workload overshadowed their acknowledged concerns about the older people in residential care homes. Further research is needed to substantiate the findings, obtain residents' views and address issues of how to achieve integrated and equitable health and social care for this group.

Long-term care facilities as sources of antibiotic-resistant nosocomial pathogens

Long-term care facilities house individuals that have usually been transferred from acute-care institutions. For this reason, carriage of methicillin-resistant Staphylococcus aureus (MRSA), resistant Gram-negative bacilli and vancomycin-resistant enterococci (VRE) is relatively frequent. As these patients are readmitted to acute-care institutions, they reintroduce these organisms into those settings. It is notable that studies of these resistant organisms in long-term care facilities demonstrate little transfer between patients. Transmission of these bacteria and the development of infection in nursing homes are both uncommon events. Resources are best devoted to infection-control basics than to isolation of patients colonized or infected with these organisms.

Hospital-acquired infections in Norwegian long-term-care institutions. A three-year survey of hospital-acquired infections and antibiotic treatment in nursing/residential homes, including 4500 residents in Oslo

Point prevalence studies of hospital-acquired infections among the elderly in 65-70 long-term care facilities (LTCF) were carried out once a year over a three-year period in Oslo city, Norway. They showed an overall rate of 6.5% of hospital-acquired infections among 13 762 residents. The infection rate was approximately the same as in hospitals and twice as high as among hospitalized long-term psychiatric patients. Residents who had received surgical treatment within the previous three months had a high rate of postoperative infections, especially wound infections (14.8%). During the study period, the LTCFs were found to be understaffed and overcrowded. They had few private rooms, a lack of bathrooms and toilets, no isolation facilities and deficient ventilation systems. The economic consequences of hospital-acquired infections in these LTCFs were extra costs in medical and nursing care and antibacterial treatment of 157 500 Nkr/day (22500 USD). There would be a substantial cost-benefit in effective preventive measures against hospital-acquired infections in long-term care institutions.