Measuring appropriate use of acute beds. A systematic review of methods and results

A systematic review of the methods used to assess appropriateness of acute bed use and the evidence on the scale of inappropriate use in different patient groups is presented. Issues of generalisability of the findings are also addressed. Criteria based tools are the accepted way of measuring inappropriate days of stay and admissions, although opinion based classification is very common. While a number of tools exist, few have been adequately tested for reliability and validity. The Appropriateness Evaluation Protocol (AEP) is the most commonly used tool, and has been tested more widely. It appears to be both reliable and valid. An estimated 29% of admissions to acute psychiatric may be inappropriate. Regarding days of care after admission, between 24 and 58% of stays were not judged to be appropriate for continued stay on an acute ward. The need for continued acute psychiatric care may become lower as patients experience continued stay in the acute setting. A lack of housing and community support was the most commonly cited reason preventing discharge. Rates of inappropriate use appear to be higher for older patients than for the general population. Wide variation in rates of inappropriate days of stay was found, but it may be safe to assume that inappropriate use is greater than 20% across a wide variety of settings. Reasons for older patients to remain in an acute hospital bed after medically necessary are typically moderate nursing care needs (i.e. long-term care). The estimates of inappropriate use in other groups was found to be highly variable. Before definitive conclusions on the inappropriate use of acute beds can be made, future research needs to take into account the methodological problems discussed here.     

The Efficiency of Acute Care Bed Utilization in Newfoundland and Labrador

Hospital efficiency is closely related to utilization levels and length of stay. This study determined whether inappropriate bed utilization in Newfoundland was related to inefficiency or inadequate access to alternative services. It also compared Canadian Institute for Health information (CIHI) data to our survey to determine whether they provide comparable information for monitoring efficiency. Inappropriate acute care days were identified using a modified Appropriateness Evaluation Protocol. Average length of stay (ALOS) by service for each of the province's acute care institutions was also reviewed from 1993-94 to 1995-96 using the CIHI database.Hospital admissions were inappropriate in 14.2 percent of 2,007 cases. Of the 14,194 days of care, 22.8 percent were inappropriate, with most (16.4 percent) being avoidable with better use of existing resources. Of the inappropriate days, 49.2 percent related to physicians' functions. The provincial ALOS fell from 5.70 days in 1993-94 to 5.39 days in 1995-96, but remains 10.5 percent above the national average.     

Modelling hospital and social care bed occupancy and use by elderly people in an English health district

The paper confirms that exponential equations can be used to model the total system and sub-systems of institutional health and social care for elderly people using bed occupancy census data for 6068 elderly aged 65 and over. Two streams of flow were present in NHS acute hospitals, Local Authority residential homes and independent sector nursing homes. Three streams of flow were present in the overall data set and in the NHS geriatric hospital beds, NHS psychiatry beds and independent sector residential care homes. In total 22% of patients/residents stayed an average of 24 days (short stay), 69% for 825 days (medium stay) and 9% for 3384 days (long stay). In both sexes, the older a patient/resident, the longer the time they occupied short stay beds and the shorter the time they occupied long stay beds.     

Between two beds: inappropriately delayed discharges from hospitals

Acknowledging the necessity of a division of labour between hospitals and social care services regarding treatment and care of patients with chronic and complex conditions, is to acknowledge the potential conflict of interests between health care providers. A potentially important conflict is that hospitals prefer comparatively short length of stay (LOS) at hospital, while social care services prefer longer LOS all else equal. Furthermore, inappropriately delayed discharges from hospital, i.e. bed blocking, is costly for society. Our aim is to discuss which factors that may influence bed blocking and to quantify bed blocking costs using individual Norwegian patient data, merged with social care and hospital data. The data allow us to divide hospital LOS into length of appropriate stay (LAS) and length of delay (LOD), the bed blocking period. We find that additional resources allocated to social care services contribute to shorten LOD indicating that social care services may exploit hospital resources as a buffer for insufficient capacity. LAS increases as medical complexity increases indicating hospitals incentives to reduce LOS are softened by considerations related to patients’ medical needs. Bed blocking costs constitute a relatively large share of the total costs of inpatient care.     

Can utilization review criteria be used to determine appropriate pediatric patient placement for a critical care bed expansion?

The rising trend in critical care utilization has led to the expansion of critical care beds in many hospitals across the country. Traditional models of estimating bed capacity requirements use administrative data such as inpatient admissions, length of stay, and case mix index. The use of such data has been limited in quantifying the complexities of demand variables in critical care bed needs. Mathematical modeling is another method for estimating numbers of beds required. It captures the dynamic changes in the management of critically ill patients that occur when units become full. Depending on data analysis methods used, bed need underestimation or overestimation can occur. In our study, we used utilization review criteria to understand changes in level of care (LOC) during the course of patients' stays and to validate critical care bed expansion needs. Using LOC criteria, we studied the proportion of our intermediate care patients in an acute care unit that met acute, intermediate, or critical care criteria. We also evaluated whether these proportions were related to specific factors such as census ratios, staffing proportions, or severity of illness. Using LOC criteria was helpful in validating our critical care bed projection, which was previously derived from mathematical modeling. The findings also validated our assessment for additional specialty acute care beds.     

A cost study of a general practitioner hospital in the Netherlands

Objective: To perform a cost study of the first general practitioner (GP) hospital in the Netherlands.

Methods: We conducted a cost study in a GP hospital in the Netherlands. Data on healthcare utilisation from 218 patients were collected for a period of one year. The costs of admission to the GP hospital were compared with the expected costs of the alternative mode of care. In the GP hospital three types of bed categories were distinguished: GP beds (admission and discharge by GPs, n=131), rehabilitation beds (recovery from hospital surgery, n=62) and nursing home beds (hospital patients awaiting a vacancy in a nursing home, n=25). GPs were interviewed to indicate the best alternative form of healthcare for the GP bed patients in the absence of a GP hospital (dichotomised for this study into ‘hospital’ or ‘home care’). For the ‘rehabilitation’ and ‘nursing home’ patients the alternative care mode was admission to a hospital.

Results: The mean length of stay was 15 days for the GP beds, 31 days for the rehabilitation beds and 90 days for the nursing home beds. For the GP bed patients the costs were ?2533 per admission compared with ?3792 for hospital stay. For the group of GP bed patients for whom ‘home care’ was the best alternative, the costs were ?2494 for GP hospital days compared with ?2814, the average cost for home care of patients of 65 years and older. For rehabilitation patients the costs per patient were ?4744 compared with ?8041 in a hospital. For patients waiting for admission to a nursing home, these costs were ?13,143 and ?22,670, respectively.

Conclusion: The GP hospital might be a cost-saving alternative for elderly patients in need of intermediate medical and nursing care between hospital and home care. Further research on the cost-effectiveness of the GP hospital compared with home care and nursing home care is needed.     

Multidisciplinary patient management by means of a high social risk screening tool

OBJECTIVE: The long-term goal in this study was for the Memorial Hospital of Salem County, Inc (MHSC), to create a seamless system of continuity of care for patients. This continuity of care begins before patients require acute admission through the hospital course and extends beyond discharge and into the post-hospital setting or alternate care situation. DESIGN: In a retrospective study in 1993, through the first 6 months of 1994, it was discovered that MHSC patients experienced a longer-than-average Medicare length of stay than was seen in other hospitals. MHSC embarked on a program to reduce discharge planning request time to the social work and home care departments by using a patient screening system that began at the time of admission. The nursing, social work, and home care departments collaboratively designed a system that allowed for immediate transfer of vital discharge planning information to the social work and home care departments at the time of the patient's admission. A tool was jointly developed called the multidisciplinary patient management record. RESULTS: The benefits of this process far exceeded the cost of implementing the tool. The average skilled nursing facility length of stay decreased below the national average by almost one full day. Patients experienced earlier access to social service intervention: discharge planning needs were identified more accurately; and the social services and home care departments' productivity rose because they could anticipate problems before a crisis arose. CONCLUSIONS: Critical to the success of this overall effort was not designing the new tool, but integrating the tool into a reengineered multidisciplinary patient management process.     

加强床位管理 提高医院运转效率

目的在确保医疗质量和安全的前提下,通过床位管理,缩短平均住院日。方法责任指标落实到床位;核心制度落实到床位;人才培养符合床位要求;医技及后勤保障到床位;监督考核落实到床位等。结果平均住院日下降了2．1天,床位服务效率提升,医院运转效率提高。结论以床位管理为抓手,可以缩短平均住院日,实现医院社会效益和经济效益双赢目标。     

Intermediate care. Bed spread

A health authority which has been using beds in independent nursing homes as alternatives to hospital for older people since 1997 has found this a satisfactory model of care. Initially the beds were used for terminal care only. Last winter the scheme was extended to provide intermediate care. The scheme uses a maximum of five beds for terminal care in one nursing home at any one time. The scheme is thought to have saved some 2,000 bed days each year. The length of stay has been reduced and now stands at 33 days.     

Hospital discharge decisions, health outcomes, and the use of unobserved information on case-mix severity.

Although implementation of the Medicare prospective payment system has been accompanied by significant decreases in hospital length of stay, the early discharge of some patients may lead to worse health outcomes, particularly if sufficient aftercare services following hospitalization are not available. This article develops an empirical model of the relationship between the choice of length of stay and patient outcome. The model incorporates information on the severity of a patient's medical condition known by the physician who chooses length of stay for a patient but generally not known by a researcher interested in the factors that affect length of stay and health outcome. Joint estimation of equations for length of stay and health outcome controls for unmeasured aspects of case severity that affect both variables. The ratio of nursing home beds to Medicare enrollees in the county is included as an exogenous variable in both equations to assess whether variation in nursing home bed availability is correlated with length of stay or health outcome. The model is estimated using billing data for Medicare patients admitted with congestive heart failure to New Jersey hospitals during 1982 and 1983. Two measures of outcome are used: (1) a discrete measure of survival time following admission, and (2) a categorical measure of whether or not the patient was discharged dead or died within six months after discharge. Empirical results show no evidence that longer lengths of stay for congestive heart failure patients lead to lower postadmission mortality. However, greater availability of nursing home beds may reduce length of stay and may shift the provision of terminal care away from a hospital setting. Therefore, policies to expand the nursing home bed supply may enable further decreases in hospital length of stay without deleterious effect on patient outcome.     

Hospital length of stay in the United States and Japan: a case study of myocardial infarction patients.

Patients in Japan stay in the hospital significantly longer than those in the United States. This study investigates factors that may account for the difference from a sociocultural perspective. In an intensive case study on patients with uncomplicated acute myocardial infarction at a university hospital in Japan and its U.S. counterpart, the authors collected data from interviews with patients, their families, physicians, and other medical professionals and from medical, nursing, and billing records. Patients with comparable medical conditions were studied; U.S. patients stayed in the hospital for 8.8 days on average, Japanese patients for 25.0 days. The average total charge of hospitalization was 2.3 times higher in the United States than in Japan. Although length of stay is determined mainly by physicians' clinical judgment and by health care system factors, patients and their family members often actively participate in decision-making about discharge dates. This case study approach revealed how different health care systems manifest themselves in the individual patient's course of illness, which cannot be examined by macro-level comparison of nations' health care systems.     

Interventions to improve access to health and social care after discharge from hospital: a systematic review

OBJECTIVES: To determine the effectiveness and costs of interventions intended to improve access to health and social care for older patients following discharge from acute hospitals. METHOD: Systematic literature review, following NHS Centre for Reviews and Dissemination guidelines, of randomised controlled trials evaluating needs assessment methods and patient discharge co-ordinator roles. These services targeted patients aged 60 years and over and varied depending on whether or not they selected frail patients (e.g. those at risk of needing nursing home care). Outcomes assessed included: referrals to or use of health and social care (15 studies); mortality (13 studies); patients' functional health status and disability (13 studies); and patient perceptions of health (five studies), quality of life (three studies), cognitive functioning and psychological well-being (ten studies), social support (two studies) and the adequacy of services (four studies). RESULTS: Fifteen randomised controlled trials (23 papers), mainly from the USA, were identified. The interventions provided and patient groups targeted by these services were heterogeneous. There was, however, some evidence that services combining needs assessment, discharge planning and a method for facilitating the implementation of these plans were more effective than services that do not include the latter action. CONCLUSIONS: The assessment of need may be insufficient in itself for the adequate provision of post-discharge care. Needs assessment should be combined with a service that facilitates the implementation of care plans.     

HIV as a chronic disease: Implications for long-term care at an AIDS-dedicated skilled nursing facility

Objective To describe the characteristics and outcomes of the first 3 years of admissions to a dedicated skilled nursing facility for people with acquired immunodeficiency syndrome (AIDS). Methods Systematic chart review of consecutive admissions to a 30-bed, AIDS-designated long-term care facility in New Haven, Connecticut, from October 1995 through December 1998. Results The facility has remained filled to 90% or more of its bed capacity since opening. Of 180 patients (representing 222 admissions), 69% were male; mean age was 41 years; 57% were injection drug users; 71% were admitted directly from a hospital. Leading reasons for admission were (1) the need for 24-hour nursing/medical supervision, (2) completion of acute medical treatment, and (3) terminal care. On admission, the median Karnofsky score was 40, and median CD4+ cell count was 24/mm³; 48% were diagnosed with serious neurologic disease, 44% with psychiatric illness; patients were receiving a median of 11 medications on admission. Of 202 completed admissions, 44% of patients died, 48% were discharged to the community, 8% were discharged to a hospital. Median length of stay was 59 days (range 1 to 1,353). Early (≤6 months) mortality was predicted by lower admission CD4+ count, impairments in activities of daily living, and the absence of a psychiatric history; long-term stay (>6 months) was predicted by total number of admission medications, neurologic disease, and dementia. Comparison of admissions from 1995 to 1996 to those in 1997 to 1998 indicated significantly decreased mortality rates and increased prevalence of psychiatric illness between the two periods (P<.01). Conclusions A dedicated skilled nursing facility for people with AIDS can fill an important service need for patients with advanced disease, acute convalescence, long-term care, and terminal care. The need for long-term care may continue to grow for patients who do not respond fully to current antiretroviral therapies and/or have significant neuropsychiatric comorbidities. This level of care may be increasingly important not only in reducing lengths of stay in the hospital, but also as a bridge to community-based residential options in the emerging chronic disease phase of the AIDS epidemic. Deceased. Supported in part by a Faculty Scholars Award to Dr. Selwyn from the Project on Death in America, Open Society Institute.     

Characteristics of elderly inpatients at high risk of needing supportive social and health care services

A two-stage cross-sectional study was conducted in a 951-bed acute-care hospital: a first survey designed to determine the profile of patients aged 64 years needing supportive social/health care services, in which 38 patients discharged between June and July, 1992 (group 1) with social/health care problems that accounted for inappropriate hospitalization days participated, and a second survey designed to identify patients aged 65 years at high risk and thus facilitating the early intervention of social workers, in which 153 patients selected at random and interviewed between August and September, 1992 (group 2) participated. A significantly higher percentage of group 1 patients had no medical insurance, were admitted to hospital for treatment, lived alone, had been readmitted in the previous 6 months, suffered from dementia and/or cognitive impairment, presented with associated chronic illnesses, and showed lower Barthel index scores as compared to group 2 patients. In patients in group 2, hospital discharge was delayed due to the need of supportive social and health care services in only 27 patients. The percentage of agreement in the suitability of the resource provided was higher after (92.6%) than before the intervention (71.1%). The mean number of inappropriate hospitalization days was 3.5 days for patients in group 1 and 1.9 days for those in group 2 (p = 0.013). The early identification of elderly inpatients at high risk of needing additional supportive social and health care would help patients to find the most appropriate resource according to their individuals needs.     

A European version of the Appropriateness Evaluation Protocol. Goals and presentation. The BIOMED I Group on Appropriateness of Hospital Use.

This paper describes the development and testing of a European version of the Appropriateness Evaluation Protocol (AEP). It stemmed from the original U.S. version and the multiple adaptations and modifications made previously and separately by researchers in European countries. The group was particularly concerned with developing a common list of reasons for inappropriate admissions and days of stay, since the principal goal was to enable an understanding of inappropriate hospital use and potential solutions within local health and social care systems. Developing a common EU-AEP included several steps. First, each national instrument was translated from the national language to English. These back translations were compared with each other and with the US-AEP. A working group analyzed the content of the lists of reasons published in the literature and proposed a novel conceptual approach. On the basis of workshop discussions, a draft of a common European version was circulated to each participant for agreement. In the EU-AEP, the clinical criteria for the appropriateness of admission include 10 related to patient condition and five to clinical services. The criteria for the appropriateness of days of care include 10 covering medical services, six for life support/nursing services, and eight related to patient condition. The proposed core list of reasons of inappropriateness distinguish clearly between two concepts: a) the level of care required by the patient; and b) the reason why this level of care was not used. The first list would thus refer to the nature of resources and facilities required, while the second would focus more on the efficient organization of those resources. A validated European tool to assess inappropriate hospital admissions and hospital days of stay and their causes might be used to assess the need for resources for inpatient care as well as for outpatient care. Assessing the reasons for inadequacies might lead also to the examination of organizational questions. Finally, a common tool allows comparisons between countries concerning the frequency of inappropriate admissions and days of stay and their reasons in relation to the different organizations of health care across Europe.     

Associations among processes and outcomes of care for Medicare nursing home residents with acute heart failure

OBJECTIVE: To characterize Medicare skilled nursing facility (SNF) residents who become acutely ill with heart failure (HF) and assess the association between the outcomes of rehospitalization and mortality, and severity of the acute exacerbation, comorbidity, and processes of care. DESIGN: SNF medical record review of Medicare patients who developed an acute exacerbation of heart failure (HF) during the 90 days following nursing home admission. SETTING: A total of 58 SNFs in 5 states during 1994 and 1997. PARTICIPANTS: Patients with 156 episodes of acute HF among 4693 random Medicare nursing home admissions. MEASUREMENTS: Demographic variables, symptoms, signs, comorbidity, nursing home characteristics, nurse staffing ratios, and processes of care were compared between acute HF subjects transferred to hospital and those not transferred; and between subjects who died within 30 days of an acute exacerbation and those who survived. RESULTS: After adjusting for age, disease severity, and comorbidity, residents whose change in condition was evaluated during the night shift were more likely to be hospitalized (OR 4.20, 95%CI 1.01-17.50). Residents who were prescribed an angiotensin-converting enzyme inhibitor or who received an order for skilled nursing observation more often than once a shift were 1/3 as likely to die as those who did not (OR 0.303, 95%CI 0.11-0.82), after adjusting for hypotension, delirium, do not resuscitate orders, and prior hospital length of stay. CONCLUSION: For residents who develop an acute exacerbation of HF during a SNF stay, there is an association between attributes of nursing home care and the outcomes of rehospitalization and mortality.     

A simulation modelling approach to evaluating length of stay, occupancy, emptiness and bed blocking in a hospital geriatric department

The flow of patients through geriatric hospitals has been previously described in terms of acute (short‐stay), rehabilitation (medium‐stay), and long‐stay states where the bed occupancy at a census point is modelled by a mixed exponential model using BOMPS (Bed Occupancy Modelling and Planning System). In this a patient is initially admitted to acute care. The majority of the patients are discharged within a few days into their own homes or through death. The rest are converted into medium‐stay patients where they could stay for a few months and thereafter either leave the system or move on to a long‐stay compartment where they could stay until they die. The model forecasts the average length of stay as well as the average number of patients in each state. The average length of stay in the acute compartment is artificially high if some would‐be long‐term patients are kept waiting in the short‐stay compartment until beds become available in long‐stay (residential and nursing homes). In this paper we consider the problem as a queueing system to assess the effect of blockage on the flow of patients in geriatric departments. What‐if analysis is used to allow a greater understanding of bed requirements and effective utilisation of resources. This revised version was published online in August 2006 with corrections to the Cover Date.     

Studies of hospital social stays in the frail elderly and their relationship to the intensity of social work intervention.

The elderly frequently suffer long lengths of hospital stay (LOS). These long stays are often associated with long social care stays which occur when patients no longer require acute care and are awaiting post-discharge services. In this study, actual acute care LOS and social care LOS were studied specifically in hospitalized frail elderly. Our data demonstrate that frail elderly receiving only acute care do not suffer markedly prolonged total LOS (TLOS). However, in hospitalized frail elderly patients who experience acute care and social care stays, social care LOS accounts for over half of all hospital days. When patients were grouped and studied according to the type of post-discharge services being sought by the health care team, significant differences in acute LOS and social care LOS were noted. Subgroups of patients were also identified among the various groups which differed significantly in their LOS parameters. Patients who required more than one discharge plan during the course of hospitalization experienced the longest hospital stays of all groups, and spent almost 70% of these days receiving non-acute social care. In a study of the relationship between the intensity of social work intervention and social care LOS in the frail elderly, a statistically significant relationship was noted between the timing and frequency of social work intervention and the actual length of social care stays. Early and frequent social work interventions were associated with significantly shorter social care LOS. We conclude that the study of TLOS should include acute LOS and social care LOS to obtain a reliable measure of the course and cost of hospital care for the frail elderly. The study of social care subgroups may facilitate future investigations to define the social care problems which contribute most to TLOS, and the patient populations which should be most heavily targeted for early and intensive social work intervention.     

Data for long-term care planning by Health Systems Agencies

Planning for the long-term care and support of the elderly is uncoordinated. Although several agenices are charged with the planning role, the Health Systems Agency (HSA) has emerged as the major planning unit. Long-term care planning is currently based on skilled nursing facility (SNF) utilization rates. This limited focus is inappropriate and the data are inconclusive. Population-based data, including levels of functioning, age, and living arrangements of those in need of extended support would provide a more useful approach. Sources for such information are suggested. The HSA should commit itself to population-based planning with special consideration of the mental health needs of the SNF residents, and the function of nursing home auspice. All types of health and social services should be taken into account in planning a system for long-term care and support.     

Swing Beds and Rural Hospitals in New York, 1991 to 1994

Abstract: New York implemented a hospital swing bed program in 1991 to allow rural hospitals access to Medicare Part B financing, increase utilization of hospital rehabilitation services, and facilitate the care of patients in their home communities. Between the years 1991 and 1994, 13 hospitals participated in the program. The authors used the New York State Department of Health annual hospital reporting data to examine the hospital swing bed experience for length of stay, payer type, and discharge disposition. Eighty-six percent of swing bed admissions came from the acute care units of the host hospital or a referral hospital. The average length of stay decreased from 25 days to 19 days during the study period with almost one-half of the patients being discharged. Swing bed revenues accounted for 3.4 percent of the total hospital gross revenues by 1994. Respite care, a component unique to New York, accounted for an increasing percent of admissions throughout the study period. The program served a useful rehabilitative function, and it represents one strategy to care for rural patients near their homes.