Integrated Inpatient Medical and Psychiatric Care: Experiences of 5 Institutions

Proactive integrated consultation-liaison psychiatry and time spent in hospital by older medical inpatients in England (The HOME Study): a multicentre, parallel-group, randomised controlled trial

BACKGROUND

Older people admitted to hospital in an emergency often have prolonged inpatient stays that worsen their outcomes, increase health-care costs, and reduce bed availability. Growing evidence suggests that the biopsychosocial complexity of their problems, which include cognitive impairment, depression, anxiety, multiple medical illnesses, and care needs resulting from functional dependency, prolongs hospital stays by making medical treatment less efficient and the planning of post-discharge care more difficult. We aimed to assess the effects of enhancing older inpatients' care with Proactive Integrated Consultation-Liaison Psychiatry (PICLP) in The HOME Study. We have previously described the benefits of PICLP reported by patients and clinicians. In this Article, we report the effectiveness and cost-effectiveness of PICLP-enhanced care, compared with usual care alone, in reducing time in hospital.

METHODS

We did a parallel-group, multicentre, randomised controlled trial in 24 medical wards of three English acute general hospitals. Patients were eligible to take part if they were 65 years or older, had been admitted in an emergency, and were expected to remain in hospital for at least 2 days from the time of enrolment. Participants were randomly allocated to PICLP or usual care in a 1:1 ratio by a database software algorithm that used stratification by hospital, sex, and age, and randomly selected block sizes to ensure allocation concealment. PICLP clinicians (consultation-liaison psychiatrists supported by assisting clinicians) made proactive biopsychosocial assessments of patients' problems, then delivered discharge-focused care as integrated members of ward teams. The primary outcome was time spent as an inpatient (during the index admission and any emergency readmissions) in the 30 days post-randomisation. Secondary outcomes were the rate of discharge from hospital for the total length of the index admission; discharge destination; the length of the index admission after random allocation truncated at 30 days; the number of emergency readmissions to hospital, the number of days spent as an inpatient in an acute general hospital, and the rate of death in the year after random allocation; the patient's experience of the hospital stay; their view on the length of the hospital stay; anxiety (Generalized Anxiety Disorder-2); depression (Patient Health Questionnaire-2); cognitive function (Montreal Cognitive Assessment-Telephone version); independent functioning (Barthel Index of Activities of Daily Living); health-related quality of life (five-level EuroQol five-dimension questionnaire); and overall quality of life. Statisticians and data collectors were masked to treatment allocation; participants and ward staff could not be. Analyses were intention-to-treat. The trial had a patient and public involvement panel and was registered with ISRTCN (ISRCTN86120296).

FINDINGS

2744 participants (1399 [51·0%] male and 1345 [49·0%] female) were enrolled between May 2, 2018, and March 5, 2020; 1373 were allocated to PICLP and 1371 to usual care. Participants' mean age was 82·3 years (SD 8·2) and 2565 (93·5%) participants were White. The mean time spent in hospital in the 30 days post-randomisation (analysed for 2710 [98·8%] participants) was 11·37 days (SD 8·74) with PICLP and 11·85 days (SD 9·00) with usual care; adjusted mean difference -0·45 (95% CI -1·11 to 0·21; p=0·18). The only statistically and clinically significant difference in secondary outcomes was the rate of discharge, which was 8.5% higher (rate ratio 1·09 [95% CI 1·00 to 1·17]; p=0·042) with PICLP-a difference most apparent in patients who stayed for more than 2 weeks. Compared with usual care, PICLP was estimated to be modestly cost-saving and cost-effective over 1 and 3, but not 12, months. No intervention-related serious adverse events occurred.

INTERPRETATION

This is the first randomised controlled trial of PICLP. PICLP is experienced by older medical inpatients and ward staff as enhancing medical care. It is also likely to be cost-saving in the short-term. Although the trial does not provide strong evidence that PICLP reduces time in hospital, it does support and inform its future development and evaluation.

FUNDING

UK National Institute for Health and Care Research.

Proactive and integrated consultation-liaison psychiatry for older medical inpatients: A mixed methods description of training, care provided and clinician experience in the HOME study

OBJECTIVES

To describe the practical experience of delivering a proactive and integrated consultation-liaison (C-L) psychiatry service model (PICLP). PICLP is designed for older medical inpatients and is explicitly biopsychosocial and discharge-focused. In this paper we report: (a) observations on the training of 15 clinicians (seven senior C-L psychiatrists and eight assisting clinicians) to deliver PICLP; (b) the care they provided to 1359 patients; (c) their experiences of working in this new way.

METHOD

A mixed methods observational study using quantitative and qualitative data, collected prospectively over two years as part of The HOME Study (a randomized trial comparing PICLP with usual care).

RESULTS

The clinicians were successfully trained to deliver PICLP according to the service manual. They proactively assessed all patients and found that most had multiple biopsychosocial problems impeding their timely discharge from hospital. They integrated with ward teams to provide a range of interventions aimed at addressing these problems. Delivering PICLP took a modest amount of clinical time, and the clinicians experienced it as both clinically valuable and professionally rewarding.

CONCLUSION

The experience of delivering PICLP highlights the special role that C-L psychiatry clinicians, working in a proactive and integrated way, can play in medical care.

Moving Beyond the Status Quo of Integrated Inpatient Medical and Psychiatric Care Units: The Path to Real-World Evaluation

Integrated inpatient medical and psychiatric care units (IMPUs) are hospital wards that care for inpatients with both acute general medical and psychiatric disorders. IMPU development has stalled, and wide variation in IMPU designs may reflect the fact that IMPUs are still in an early evolutionary stage. High-quality evidence concerning the costs and effectiveness of IMPUs is sparse, because IMPUs do not lend themselves well to traditional evidence-based medicine methods. As a result, most studies of IMPUs have been only observational. Therefore, it is time for a different approach, in which goals for IMPUs are explicitly formulated and IMPU research is incorporated into evidence-based practice (EBP) instead of evidence-based medicine. EBP can be viewed as integrating best available evidence into organizational practices by using four pillars of evidence: organizational, experiential, stakeholder, and scientific. Such types of evidence require an investment in describing the field more precisely. When pragmatic reasoning, where clinical expertise and organizational needs determine IMPU designs, is replaced with EBP, researchers can more effectively perform studies that may convince health care policy makers that IMPUs represent a cost-effective way to improve patients' health and that they increase the well-being of both patients and hospital staff.

Organization and Outcomes of Integrated Inpatient Medical and Psychiatric Care Units: A Systematic Review

OBJECTIVE

The goal of this review was to assess the relationships among aims, designs, and outcomes of integrated inpatient medical and psychiatric care units (IMPUs) and gather the evidence base on the effectiveness of these units.

METHODS

Using online searches of Embase, Medline, Web of Science, PsycINFO, Scopus, CINAHL, Cochrane, and Google Scholar, the authors identified and reviewed literature describing the aims and outcomes of specific IMPU designs.

RESULTS

The search yielded 55 studies, in which the authors identified 39 IMPUs that focused on patients with mood, psychotic, somatic symptom, substance use, organic, and personality disorders and a broad array of medical diagnoses. Most units were psychiatric-medical units and had medium medical and psychiatric acuity capabilities. The studies reviewed provided little information on the cost-effectiveness of various IMPU designs. Although some comparative studies indicated reductions in hospital length of stay (LOS), these studies were generally of low quality and rarely reported other intended outcomes.

CONCLUSIONS

IMPUs may help shorten LOS. IMPUs should focus care on patients with complex conditions and high acuity to maximize health system value. Implementing compulsory admission facilities; qualified psychiatric, medical, and nursing staff involvement; and cross-disciplinary training may improve IMPUs' capacity to treat high-acuity patients. Future research should relate IMPU designs to intended outcomes.

Observational cohort study of the triggers, diagnoses and outcomes of the medical emergency team (MET) response in adult psychiatry inpatients colocated with acute medical services in Australia

OBJECTIVES

Medical emergencies in psychiatric inpatients are challenging due to the model of care and limited medical resources. The study aims were to determine the triggers and outcomes of a medical emergency team (MET) call in psychiatric wards, and the risk factors for MET activation and mortality.

DESIGN

Retrospective multisite cohort study.

SETTING

Psychiatry units colocated with acute medical services at three major metropolitan hospitals in Melbourne, Australia.

PARTICIPANTS

We studied 487 adult inpatients who experienced a total of 721 MET calls between January 2015 and January 2020. Patients were relatively young (mean age, 45 years) and had few medical comorbidities, but a high prevalence of smoking, excessive alcohol intake and illicit drug use.

OUTCOME MEASURES

We performed a descriptive analysis of the triggers and outcomes (transfer rates, investigations, final diagnosis) of MET calls. We used logistic regression to determine the factors associated with the primary outcome of inpatient mortality, and the secondary outcome of the need for specific medical treatment compared with simple observation.

RESULTS

The most common MET triggers were a reduced Glasgow Coma Scale, tachycardia and hypotension, and 49% of patients required transfer. The most frequent diagnosis was a drug adverse effect or toxidrome, followed by infection and dehydration. There was a strong association between a leave of absence and MET calls, tachycardia and the final diagnosis of drug adverse effects. Mortality occurred in 3% after MET calls. Several baseline and MET clinical variables were associated with mortality but a model with age (per 10 years, OR 1.61, 95% CI 1.29 to 2.01) and hypoxia (OR 3.59, 95% CI 1.43 to 9.04) independently predicted mortality.

CONCLUSION

Vigilance is required in patients returning from day leave, and drug adverse effects remain a challenging problem in psychiatric units. Hypoxic older patients with cardiovascular comorbidity have a higher risk of death.

Taking the Long View in an Inpatient Medical Unit: A Person-Centered, Integrated Team Approach for Patients With Severe Mental Illnesses

OBJECTIVE

Patients with severe mental illnesses and related conditions, such as substance misuse and suicide attempts, are among the highest utilizers of acute inpatient medical services. The objective of this study was to assess the impact of a specialized medical unit that uses a comprehensive biopsychosocial model to care for patients with severe mental illnesses.

METHODS

The study used administrative data to compare patients with severe mental illnesses admitted to a specialized unit with patients admitted to medically similar acute (non-intensive care) medical units in a tertiary academic medical center. With controls for sociodemographic variables, illness severity, and medical complexity, multivariate regression analyses compared utilization outcomes for patients from the specialized unit with outcomes from comparison units.

RESULTS

Patients on the specialized unit (N=2,077) were younger, had more mental disorder diagnoses, and were more likely to have less severe general medical illness and less medical complexity than patients from comparison units (N=12,824). Analyses of a subsample of patients with complex behavioral health diagnoses indicated that those on the specialized unit had a shorter average stay, higher odds of discharge to home, and lower odds of 30-day readmission, compared with those on comparison units.

CONCLUSIONS

Specialized units targeted to the needs of patients with serious mental illnesses can provide a moment of engagement when vulnerable patients are likely to benefit from more coordinated care. Findings suggest that a specialized unit that capitalizes on this moment of engagement and uses a biopsychosocial model of care can improve utilization outcomes.

Proactive Integrated Consultation-Liaison Psychiatry: A new service model for the psychiatric care of general hospital inpatients

OBJECTIVE

To describe a new service model for the psychiatric care of general hospital inpatients, called Proactive Integrated Consultation-Liaison Psychiatry ('Proactive Integrated Psychological Medicine' in the UK).

METHOD

The new service model was developed especially for general hospital inpatient populations with multimorbidity, such as older medical inpatients. Its design was informed by the published literature and the clinical experience of C-L psychiatrists. It was operationalized by a process of iterative piloting.

RESULTS

The rationale for the new model and the principles underpinning it are outlined. Details of how to implement it, including a service manual and associated workbook, are provided. The training of clinicians to deliver it is described. The effectiveness and cost-effectiveness of this new service model is being evaluated. Whilst we have found it feasible to deliver and well-accepted by ward teams, potential challenges to its wider implementation are discussed.

CONCLUSION

Proactive Integrated Consultation-Liaison Psychiatry (PICLP) is a fusion of proactive consultation and integrated care, operationalized in a field-tested service manual. Initial experience indicates that it is feasible to deliver. Its effectiveness and cost effectiveness for older patients on acute medical wards is currently being evaluated in a large multicentre randomized controlled trial (The HOME Study).

Measuring outcomes on a Medical Psychiatric Unit: HoNOS,, CANSAS and costs

OBJECTIVE

To study the course of the functional status and healthcare needs of patients on a Medical Psychiatric Unit (MPU).

METHODS

In a single-centre observational prospective design the Health of the Nation Outcome Scales (HoNOS) and Camberwell Assessment of Needs Short Appraisal Schedule (CANSAS) instruments were administered at admission and discharge. Functional status and healthcare needs were assessed utilizing the HoNOS and CANSAS respectively. The total costs of healthcare claims related to the admission were calculated based on claims data.

RESULTS

In total 50 patients were included with a mean improvement of 4.6 on the HoNOS and an effect size of 0.6.The total number of unmet needs fell from 208 to 115. The median costs per decreased HoNOS point were €2.842 and €6.880 per unmet need.

DISCUSSION

Many patients improved, but due to a large standard deviation at baseline and a low Cronbach's alpha, only 4 patients showed a reliable improvement on functional status. That substantial remission was achieved was shown by the decrease in unmet needs of 93 (44.7%) for the whole group. These observations support the implementation of MPUs, although more research is warranted to ensure cost-effectiveness.

Towards integrated medical and mental healthcare in the inpatient setting: what is the role of psychology?

Integrated medical and psychiatric hospital units hold great promise for improving the value and quality of care for patients with severe mental illness and concomitant acute medical needs. It is important to explore the utility of providing a range of multidisciplinary inpatient services to meet patients' complex needs. Within this context, services typically provided by psychologists have received little research attention. To address this gap in the literature, this study assessed inpatient clinicians' perceptions of the need for specific behavioural services on a medical psychiatric unit, exploring their overlap with established psychological services. Results indicate the potential utility of specific psychological services, including psychological assessments, direct psychosocial interventions, and psychoeducational training. While reimbursement and billing barriers still exist for psychologists to be routinely incorporated into hospital settings, the movement towards value-based care could provide the opportunity to think about the value added. Embedding evidence-based psychological services has the potential to promote high quality, well-rounded care that aligns with the established mission of multidisciplinary teamwork on integrated medical and psychiatric inpatient units.