Frailty in younger adults in hospital.

BACKGROUND: Even though frailty has been extensively measured in the acute care setting, relatively little is known about the frailty of younger adult inpatients. AIM: This study aimed to measure frailty in a sample of hospitalized adults aged 18 years and over and to examine how frailty in younger adult inpatients differs from middle-aged and older adult inpatients. DESIGN: Secondary analyses of prospectively collected cohort data. METHODS: Research nurses assessed 910 patients at admission to four Australian hospitals using the interRAI Acute Care instrument. Comparison of frailty index (FI) scores and domains was conducted across three age groups: younger (18-49 years), middle-aged (50-69 years) and older adults (≥70 years). Multivariable logistic regression examined risk of prolonged length of stay and unfavourable discharge destination. RESULTS: Younger adults (n = 214; 23.5%) had a mean (SD) FI of 0.19 (0.10). Approximately 27% (n = 57) of younger adults were frail (FI > 0.25). Mood and behaviour, health symptoms and syndromes, nutrition and pain were the most frequently affected domains in younger adults and 50% had ≥3 comorbidities. Frailty increased the risk of long length of stay (odds ratio (OR) = 1.77, P < 0.001) but not the risk of an unfavourable discharge (OR = 1.40, P = 0.20) in younger adults. CONCLUSIONS: This study showed that frailty is prevalent in younger patients admitted to acute care and is associated with adverse outcomes. This study was a critical first step towards establishing an understanding of frailty in younger hospitalized adults.

Frailty: A cost incurred by reproduction?

Evolutionary theories of senescence, such as the 'disposable soma' theory, propose that natural selection trades late survival for early fecundity. 'Frailty', a multidimensional measure of health status, may help to better define the long-term consequences of reproduction. We examined the relationship between parity and later life frailty (as measured by the Frailty Index) in a sample of 3,534 adults aged 65 years and older who participated in the English Longitudinal Study of Ageing. We found that the most parous adults were the most frail and that the parity-frailty relationship was similar for both sexes. Whilst this study provided some evidence for a 'parity-frailty trade-off', there was little support for our hypothesis that the physiological costs of childbearing influence later life frailty. Rather, behavioural and social factors associated with rearing many children may have contributed to the development of frailty in both sexes.

Validation of a frailty index in older cancer patients with solid tumours.

BACKGROUND: Frailty is an indicator of physiological reserve in older people. In non-cancer settings, frailty indices are reliable predictors of adverse health outcomes. The aims of this study were to 1) derive and validate a frailty index (FI) from comprehensive geriatric assessment (CGA) data obtained in the solid tumour chemotherapy setting, and 2) to explore whether the FI-CGA could predict chemotherapy decisions and survival in older cancer patients with solid tumours. METHODS: Prospective cohort study of a consecutive series sample of 175 cancer patients aged 65 and older with solid tumours. A frailty index was calculated using an accumulated deficits model, coding items from the comprehensive geriatric assessment tool administered prior to chemotherapy decision-making. The domains of physical and cognitive functioning, nutrition, mood, basic and instrumental activities of daily living, and comorbidities were incorporated as deficits into the model. RESULTS: The FI-CGA had a right-skewed distribution, with median (interquartile range) of 0.27 (0.21-0.39). The 99% limit to deficit accumulation was below the theoretical maximum of 1.0, at 0.75. The FI-CGA was significantly related (p < 0.001) to vulnerability as assessed by the Vulnerable Elders Survey-13 and to medical oncologists' assessments of fitness or vulnerability to treatment. Baseline frailty as determined by the FI-CGA was also associated with treatment decisions (Treatment Terminated, Treatment Completed, No Planned Treatment) (p < 0.001), with the No Planned Treatment group significantly frailer than the other two groups. CONCLUSION: The FI-CGA is a potentially useful adjunct to cancer clinical decision-making that could predict chemotherapy outcomes in older patients with solid tumours.

Do health assets have a protective effect for hospitalized frail older adults?

BACKGROUND: Although increasing frailty is predictive of increased mortality and length of stay for hospitalized older adults, this approach ignores health assets that individuals can utilize to recover following hospital admission. AIM: To examine whether health assets mitigate the effect of frailty on outcomes for older adults admitted to hospital. DESIGN: Patients of 1418 aged ≥ 70 years admitted to 11 hospitals in Australia were evaluated at admission using the interRAI assessment system for Acute Care, which surveys a large number of domains, including cognition, communication, mood and behaviour, activities of daily living, continence, nutrition, skin condition, falls and medical diagnosis. METHODS: The data set was interrogated for potential health assets and a multiple logistic regression adjusted for frailty index, age and gender as covariates was performed for the outcomes mortality, length of stay, re-admission and new need for residential care. RESULTS: Inpatient mortality was 3% and 4.5% of patients died within 28 days of discharge. Median length of stay was 7 days (IQR 4-11). In multivariate analysis that includes frailty, being able to walk further [OR 0.08 (0.01-0.63)], ability to leave the house [OR 0.35 (0.17-0.74)] and living alone [OR 0.28 (0.10-0.79)] were protective against mortality. The presence of a support person was associated with a decreased length of stay [OR 0.14 (0.08-0.25)]. CONCLUSION: The inclusion of health assets in predictive models can improve prognostication and highlights potential interventions to improve outcomes for hospitalized older adults.

The Utility of the Frailty Index in Clinical Decision Making.

Using clinical vignettes, this study aimed to determine if a measure of patient frailty would impact management decisions made by geriatricians regarding commonly encountered clinical situations. Electronic surveys consisting of three vignettes derived from cases commonly seen in an acute inpatient ward were distributed to geriatricians. Vignettes included patients being considered for intensive care treatment, rehabilitation, or coronary artery bypass surgery. A frailty index was generated through Comprehensive electronic Geriatric Assessment. For each vignette, respondents were asked to make a recommendation for management, based on either a brief or detailed amount of clinical information and to reconsider their decision after the addition of the frailty index. The study suggests that quantification of frailty might aid the clinical judgment now employed daily to proceed with usual care, or to modify it based on the vulnerability of the person to whom it is aimed.

Perioperative assessment of older surgical patients using a frailty index-feasibility and association with adverse post-operative outcomes.

This study aimed to examine the feasibility of using a frailty index (FI) based on comprehensive geriatric assessment (CGA), to assess the level of frailty in older surgical patients preoperatively and to evaluate the association of FI-CGA with poorer postoperative outcomes. Two hundred and forty-six patients aged ≥70 years undergoing intermediate- to high-risk surgery in a tertiary hospital were recruited. Frailty was assessed using a 57-item FI-CGA form, with fit, intermediate frail, and frail patients defined as FI ≤0.25, >0.25 to 0.4, and >0.4, respectively. Adverse outcomes were ascertained at 30 days and 12 months post-surgery. Logistic regression models assessed the relationship between FI and adverse outcomes, adjusting for age, gender and acuity of surgery. The mean age of the participants was 79 years (standard deviation [SD] 6.5%), 52% were female, 91% were admitted from the community, 43% underwent acute surgery, and 19% were assessed as frail. The FI-CGA form was reported as being easy to apply, with a low patient refusal rate (2.2%). The majority of items were easy to rate, although inter-rater reliability was not tested. In relation to outcomes, greater frailty was associated with increased 12-month mortality (6.4%, 15.6%, and 23% for fit, intermediate frail, and frail patients respectively, P=0.01) and 12-month hospital readmissions (33.9%, 48.9%, and 60% respectively, P=0.004). There were no statistically significant differences between fit, intermediate frail, and frail groups in perioperative adverse events (17.4%, 23.3%, and 19.1% respectively, P=0.577) or 30-day postoperative complications (35.8%, 47.8%, and 46.8% respectively, P=0.183). Our findings suggest that it is feasible to use the FI-CGA to assess frailty preoperatively, and that using the FI-CGA may identify patients at high risk of adverse long-term outcomes.

Sex differences in frailty: A systematic review and meta-analysis.

BACKGROUND: It is a well-described clinical phenomenon that females live longer than males, yet tend to experience greater levels of co-morbidity and disability. Females can therefore be considered both more frail (because they have poorer health status) and less frail (because they have a lower risk of mortality). This systematic review aimed to determine whether this ageing paradox is demonstrated when the Frailty Index (FI) is used to measure frailty. METHODS: Medline, EMBASE and CINAHL databases were searched for observational studies that measured FI and mortality in community-dwellers over 65years of age. In five-year age groups, meta-analysis determined the sex differences in mean FI (MD=mean FIfemale-mean FImale) and mortality rate. RESULTS: Of 6482 articles screened, seven articles were included. Meta-analysis of data from five studies (37,426 participants) found that MD values were positive (p<0.001; MD range=0.02-0.06) in all age groups, indicating that females had higher FI scores than males at all ages. This finding was consistent across individual studies. Heterogeneity was high (I2=72.7%), reflecting methodological differences. Meta-analysis of mortality data (13,127 participants) showed that male mortality rates exceeded female mortality rates up until the 90 to 94-years age group. Individual studies reported higher mortality for males at each level of FI, and higher risk of death for males when controlling for age and FI. CONCLUSIONS: The pattern of sex differences in the FI and mortality of older adults was consistent across populations and confirmed a 'male-female health-survival paradox'.

Frailty and post-operative outcomes in older surgical patients: a systematic review.

BACKGROUND: As the population ages, increasing numbers of older adults are undergoing surgery. Frailty is prevalent in older adults and may be a better predictor of post-operative morbidity and mortality than chronological age. The aim of this review was to examine the impact of frailty on adverse outcomes in the 'older old' and 'oldest old' surgical patients. METHODS: A systematic review was undertaken. Electronic databases from 2010 to 2015 were searched to identify articles which evaluated the relationship between frailty and post-operative outcomes in surgical populations with a mean age of 75 and older. Articles were excluded if they were in non-English languages or if frailty was measured using a single marker only. Demographic data, type of surgery performed, frailty measure and impact of frailty on adverse outcomes were extracted from the selected studies. Quality of the studies and risk of bias was assessed by the Epidemiological Appraisal Instrument. RESULTS: Twenty-three studies were selected for the review and they were assessed as medium to high quality. The mean age ranged from 75 to 87 years, and included patients undergoing cardiac, oncological, general, vascular and hip fracture surgeries. There were 21 different instruments used to measure frailty. Regardless of how frailty was measured, the strongest evidence in terms of numbers of studies, consistency of results and study quality was for associations between frailty and increased mortality at 30 days, 90 days and one year follow-up, post-operative complications and length of stay. A small number of studies reported on discharge to institutional care, functional decline and lower quality of life after surgery, and also found a significant association with frailty. CONCLUSION: There was strong evidence that frailty in older-old and oldest-old surgical patients predicts post-operative mortality, complications, and prolonged length of stay. Frailty assessment may be a valuable tool in peri-operative assessment. It is possible that different frailty tools are best suited for different acuity and type of surgical patients. The association between frailty and return to pre-morbid function, discharge destination, and quality of life after surgery warrants further research.

Baseline Vulnerability and Inpatient Frailty Status in Relation to Adverse Outcomes in a Surgical Cohort.

This study aimed to derive measures of baseline vulnerability and inpatient frailty in elderly surgical patients and to study their association with adverse post-operative outcomes. Data from comprehensive geriatric assessment of 208 general surgical and orthopaedic patients aged 70 and over admitted to four acute hospitals in Queensland, Australia, were analysed to derive a baseline and inpatient Frailty Index (FI). The association of these indices with adverse outcomes was examined in logistic regression. The mean (SD) baseline FI was 0.19 (0.09) compared to 0.26 (0.12) on admission, with a predominant increase in domains related to functional status. Both baseline and inpatient FI were significant predictors of one year mortality, inpatient delirium, and a composite adverse outcome, after adjusting for age, sex and acuity of surgery. In summary, detecting baseline frailty pre-hospitalisation may be useful to trigger the implementation of supportive and preventative measures in hospital.

Prescribing for older people discharged from the acute sector to residential aged-care facilities.

For frail older people, admission to hospital is an opportunity to review the indications for specific medications. This research investigates prescribing for 206 older people discharged into residential aged care facilities from 11 acute care hospitals in Australia. Patients had multiple comorbidities (mean 6), high levels of dependency, and were prescribed a mean of 7.2 regular medications at admission to hospital and 8.1 medications on discharge, with hyper-polypharmacy (≥10 drugs) increasing from 24.3% to 32.5%. Many drugs were preventive medications whose time until benefit was likely to exceed the expected lifespan. In summary, frail patients continue to be exposed to extensive polypharmacy and medications with uncertain risk-benefit ratio.

Walking Activity of Older Patients in Rehabilitation: A Prospective Study.

OBJECTIVES: To quantify, using accelerometry, walking activity of older rehabilitation inpatients and to examine the relationship between walking activity and functional outcomes. DESIGN: Prospective cohort study. SETTING: Inpatient geriatric rehabilitation unit. PARTICIPANTS: Of 74 consecutive eligible patients, aged 60 years or older and able to walk independently or with assistance, 60 participants (32 males, 28 females) with a mean (SD) length of stay of 37 (26) days completed the study. Intervention Measures: An accelerometer was worn in daytime hours from study recruitment until discharge to monitor daily walking minutes. RESULTS: On study entry, patients spent a median (IQR) of 33 (20 to 48) minutes (7%) of the daily monitored eight hour period walking. By discharge, this had increased to 43 (30 to 56) minutes (9%) (p< 0.001). Average daily walking activity over the week prior to discharge correlated with change in gait speed from admission to discharge (p<0.05). Walking activity prior to discharge was significantly different (p<0.05) between the slowest gait speed group (≤0.4 m/s) and the fastest gait speed group (≥0.8 m/s). Those with discharge gait speeds ≥0.8 m/s (associated with ability to be ambulant in the community) had median (IQR) daily walking times at discharge of 51 (33 to 78) minutes. CONCLUSION: Activity monitoring has the potential to assist clinicians and patients set goals around activity levels to achieve better outcomes.

Impact of Post-Acute Transition Care for Frail Older People: A Prospective Study.

OBJECTIVES: To describe the characteristics and outcomes of frail older people in a post-acute transitional care program and to compare the recovery trajectories of patients with high and low care needs to determine who benefits from transition care. DESIGN: Prospective observational cohort. PARTICIPANTS AND SETTING: 351 patients admitted to community-based transition care in two Australian states during an 11 month recruitment period. INTERVENTION: Transition care provides a package of services including personal care, physiotherapy and occupational therapy, nursing care and case management post discharge from hospital. It is targeted at frail older people who, in the absence of an alternative, would otherwise be eligible for admission to residential aged care. MEASUREMENTS: A comprehensive geriatric assessment using the interRAI Home Care instrument was conducted at transition care admission and discharge. Primary outcomes included changes in functional ability during transition care, living status at discharge and six months follow-up, and hospital re-admissions over the follow-up period. For comparison of outcomes, the cohort was divided into two groups based on risk factors for admission to high or low-level residential aged care. RESULTS: There were no significant differences between groups on outcomes, with over 85% of the cohort living in the community at follow-up. More than 80% of the cohort showed functional improvement or maintenance of independence during transition care, with no significant differences between the groups. CONCLUSIONS: Post-acute programs should not be targeted solely at fitter older people: those who are frail also have the potential to gain from community-based rehabilitation.

Geriatric Syndromes in Older Surgical Patients: A Literature Review.

With the ageing of the population, surgical wards are caring for an increased proportion of older patients. Geriatric syndromes are common in older hospitalised medical and hip fracture patients and are important predictors of poor outcomes in these groups, however the extent of presenting and hospital acquired geriatric syndromes in other older inpatients is less clear. This systematic literature review aimed to identify the proportion of patients aged 60 or older, cared for in usual-care surgical wards, who presented with and/or developed geriatric syndromes. Observational studies in English were identified through searches in CINAHL and Medline databases from 1985-2012. Studies of hip fracture patients and those requiring surgical intensive care (eg cardiac surgery) were excluded. The review included 25 studies. The majority of studies reported on the incidence of post-operative delirium, which ranged from 2% to 51% and varied with the type of surgery. The prevalence of depression at pre-admission screening varied from 9% to 29%. No studies reported on functional decline. Estimates of falls, malnutrition, pressure ulcers and urinary incontinence were limited by the small number of studies. These findings indicate the need for further studies to improve the understanding of geriatric syndromes in older surgical patients in usual-care wards.

Can post-acute care programmes for older people reduce overall costs in the health system? A case study using the Australian Transition Care Programme.

There is an increasing demand for acute care services due in part to rising proportions of older people and increasing rates of chronic diseases. To reduce pressure and costs in the hospital system, community-based post-acute care discharge services for older people have evolved as one method of reducing length of stay in hospital and preventing readmissions. However, it is unclear whether they reduce overall episode cost or expenditure in the health system at a more general level. In this paper, we review the current evidence on the likely costs and benefits of these services and consider whether they are potentially cost-effective from a health services perspective, using the Australian Transition Care Programme as a case study. Evaluations of community-based post-acute services have demonstrated that they reduce length of stay, prevent some re-hospitalisations and defer nursing home placement. There is also evidence that they convey some additional health benefits to older people. An economic model was developed to identify the maximum potential benefits and the likely cost savings from reduced use of health services from earlier discharge from hospital, accelerated recovery, reduced likelihood of readmission to hospital and delayed entry into permanent institutional care for participants of the Transition Care Programme. Assuming the best case scenario, the Transition Care Programme is still unlikely to be cost saving to a healthcare system. Hence for this service to be justified, additional health benefits such as quality of life improvements need to be taken into account. If it can be demonstrated that this service also conveys additional quality of life improvements, community-based programmes such as Transition Care could be considered to be cost-effective when compared with other healthcare programmes.

Promoting walking amongst older patients in rehabilitation: are accelerometers the answer?

The role of physical activity amongst older people in inpatient rehabilitation settings has been little studied. Walking has a number of potential benefits for older people in rehabilitation but it is not known whether increased walking improves outcomes in this population. Until now mobility monitoring has not been possible in routine practice. Recently tri-axial accelerometers have been validated for ambulatory activity monitoring in older adults. Accelerometry has the potential to explore the role of walking in older patients in rehabilitation. Providing data regarding activity levels may improve patient motivation and assist clinicians with activity prescription. Future research could determine the relationship between activity levels and patient outcomes.

Population based study of hospitalised fall related injuries in older people.

OBJECTIVE: This study aimed to identify the distribution of fall related injury in older people hospitalised for acute treatment of injury, in order to direct priorities for prevention. SETTING: A follow up study was conducted in the Brisbane Metropolitan Region of Australia during 1998. METHODS: Medical records of patients aged 65 years and over hospitalised with a fall related injury were reviewed. Demographic and injury data were analysed and injury rates calculated using census data as the denominator for the population at risk. RESULTS: From age 65, hospitalised fall related injury rates increased exponentially for both males and females, with age adjusted incidence rates twice as high in women than men. Fractures accounted for 89% of admissions, with over half being to the hip. Males were significantly more likely than females to have fractured their skull, face, or ribs (p<0.01). While females were significantly more likely than males to have fractured their upper or lower limbs (p<0.01), the difference between proportions of males and females fracturing their hip was not significant. Males were more likely than females (p<0.01) to have fall related head injuries (13% of admissions). Compared with hip fractures, head injuries contributed significantly to the burden of injury in terms of severity, need for intensive care, and excess mortality. CONCLUSIONS: The frequency and impact of hip fractures warrants continued emphasis in falls program interventions for both males and females to prevent this injury. However, interventions that go beyond measures to slow and protect against bone loss are also needed to prevent fall related head injuries.