Quantification of anticholinergic and sedative drug load with the Drug Burden Index: a review of outcomes and methodological quality of studies

Preadmission medications and recent falls in older inpatients: an observational study

BACKGROUND

Falls in older adults might increase due to polypharmacy.

AIM

This study aimed to explore the association between preadmission medications and history of falls in older inpatients.

METHOD

This observational study of inpatients aged ≥ 65 years was conducted over 4 years at Ballina Hospital, Australia. The Medication Regimen Complexity Index (MRCI), Drug Burden Index (DBI), and Anticholinergic Effect on Cognition (AEC) scores were calculated for preadmission medications. Polypharmacy and falls questionnaires were administered to identify falls in the past 6 months and aptitude toward medication use.

RESULTS

Overall, 194 participants with a mean age of 80.2 (SD 8.0) years were included. The mean daily number of regular medications was 7.8 (SD 3.9) and the mean MRCI score was 22 (SD 12.6). Among the participants, 107 (55%) reported falls in the past 6 months and 47 (24%) reported ≥ 2 falls. Age and hearing impairment were positively associated with falls (p = 0.007 and p = 0.003, respectively). History of falls was positively associated with a MRCI score of ≥ 20 (p = 0.018), an AEC score of ≥ 2 (p = 0.010) and a DBI score of ≥ 1 after adjustment for age (p = 0.041). Forgetting medications was associated with falls (p = 0.043). Antihypertensive use did not increase falls risk.

CONCLUSION

Implementing a decisive approach to simplify complex medication regimens, along with patient-focused medication management strategies, may help reduce the risk of falls in older adults. Sedatives and anticholinergic medications increase the risk of falls and should be avoided whenever possible.

Consumer and multidisciplinary clinician experiences after implementation of the Drug Burden Index intervention bundle to facilitate deprescribing in older inpatients: A mixed method study

RATIONALE

The Drug Burden Index (DBI) measures exposure to anticholinergic and sedative drugs, which are associated with harm in older adults. To facilitate deprescribing in older Australian inpatients, we piloted an intervention bundle integrating the DBI in Electronic Medical Records, clinician deprescribing guides, consumer information leaflets and a stewardship pharmacist.

OBJECTIVES

To understand (i) hospital clinician experiences of using the bundle and (ii) consumer (patient and carer) and General Practitioner (GP) experiences of in-hospital deprescribing, following bundle implementation.

METHODS

Hospital clinicians from target services (General and Geriatric Medicine) at an Australian metropolitan tertiary-referral hospital, were invited to complete surveys, including the System Usability Scale (SUS), and interviews. Patients aged ≥75 years with high DBI (DBI ≥1) were admitted to target services, and their carers, received interview invitations. Consenting patients' GPs received surveys. Qualitative data was thematically analysed. Hospital clinician interviews were mapped to the Human Organisation Technology-fit Framework. Patient interviews were mapped to an adaptation of the National Health Service Patient Experience Framework.

RESULTS

Seventeen hospital clinicians (n = 15 medical, n = 2 pharmacists) and four GPs completed surveys. Eight hospital clinicians (n = 7 medical, n = 1 pharmacist), seven patients and two carers completed interviews. Hospital clinicians reported good usability (SUS score 71.5 ± 12.5). Most themes were around system use and user satisfaction. They reported the intervention was useful for medication review, identified challenges from pre-existing heavy workload and suggested further integration into workflows. Patients and carers reported themes around information, communication and education. Patients reported feeling better or no different post-deprescribing. Patients, carers and GPs described poor communication regarding in-hospital medication changes and their rationale.

CONCLUSIONS

The intervention was well accepted by hospital clinicians. The bundle requires further integration into workflows for sustainability and assessment of generalisability in other health services. Given patients, carers and GPs reported poor medication-related communication, future interventions may target this.

Drug burden index in people living with HIV over 50 years of age in a real clinical practice cohort

OBJECTIVES

To determine DBI and its relationship with polypharmacy and pharmacotherapeutic complexity (PC) in a cohort of PLWH over 50 years of age at follow-up of pharmacotherapy in a tertiary hospital.

METHODS

Observational and retrospective study that included PLWH in active antiretroviral treatment over 50 years of age who have been followed up in outpatient pharmacy services. Pharmacotherapeutic complexity was estimated through Medication Regimen Complexity Index (MRCI). Collected variables included comorbidities, current prescriptions and its classification according to anticholinergic and sedative activity and associated risk of falls.

RESULTS

Studied population included 251 patients (85.7% men; median age: 58 years, interquartile range: 54-61). There was a high prevalence of high DBI scores (49.2%). High DBI was significantly correlated with a high PC, polypharmacy, psychiatric comorbidity and substances abuse (p<0.05). Among sedative drugs, the most prescribed were anxiolytic drugs (N05B) (n=85), antidepressant drugs (N06A) (n=41) and antiepileptic drugs (N03A) (n=29). For anticholinergic drugs, alpha-adrenergic antagonist drugs (G04C) were the most prescribed (n=18). Most frequent drugs associated with risk of falls were anxiolytics (N05B) (n=85), angiotensin-converting enzyme inhibitors (C09A) (n=61) and antidepressants (N06A) (n=41).

CONCLUSION

The DBI score in older PLWH is high and it is related to PC, polypharmacy, mental diseases and substance abuse as is the prevalence of fall-related drugs. Control of these parameters as well as the reduction of the sedative and anticholinergic load should be included in the lines of work in the pharmaceutical care of people living with HIV+.

The Drug Burden Index Is Associated With Measures of Cognitive Function Among Older Adults in the Health, Aging, and Body Composition Study

BACKGROUND

Anticholinergic and sedative medications affect cognition among older adults. The Drug Burden Index (DBI) is a validated measure of exposure to these medications, with higher DBI scores indicating higher drug burden. This ancillary analysis investigated the association between DBI and cognition assessed by the Modified Mini-Mental State Examination (3MS) and the Digit Symbol Substitution Test (DSST).

METHODS

The Health, Aging, and Body Composition Study was a prospective study of community-dwelling adults aged 70-79 years at enrollment. Using data from years 1, 5, and 10, DBI was calculated using medication data per participant. Linear mixed modeling was used to assess cross-sectional and longitudinal effects of DBI on 3MS and DSST. Adjusted models included biological sex, race, education level, APOE status, and death. Sensitivity analyses included testing the strength of the associations for each year and testing attrition due to death as a possible confounding factor via Cox-Proportional Hazard models.

RESULTS

After adjustment, DBI was inversely associated with 3MS and DSST scores. These associations became stronger in each subsequent year. Neither DBI at year 1 nor within-person change in DBI were predictive of longitudinal declines in either cognitive measure. Sensitivity analyses indicated that DBI, 3MS, and DSST were associated with a greater risk of attrition due to death.

CONCLUSIONS

Results suggest that in years when older adults had a higher DBI scores, they had significantly lower global cognition and slower processing speed. These findings further substantiate the DBI as a useful pharmacological tool for assessing the effect of medication exposure.

Development and Pilot Testing of an Algorithm-Based Approach to Anticholinergic Deprescribing in Older Patients

BACKGROUND

Adverse anticholinergic drug reactions are common, yet evidence on how to reduce exposure to anticholinergic activity and reliably measure successful deprescribing is still scant. This study proposes an algorithm-based approach to evaluate and reduce anticholinergic load, and reports the results of its pilot testing.

METHODS

Based on published evidence and expert opinion, a list of 85 anticholinergic drugs and 21 algorithms for reducing anticholinergic load, e.g., by recommending alternative drugs with lower risk, were developed. An accompanying test battery was assembled by focusing on instruments that sensitively reflect anticholinergic load and may be sensitive to depict changes (Neuropsychological Assessment Battery to measure memory and attention, validated assessments for constipation, urinary symptoms, and xerostomia, as well as blood biomarkers). The approach was pilot-tested in a geriatric rehabilitation unit, with clinician feedback as the primary outcome and characterization of anticholinergic symptoms as the secondary outcome. The intervention was delivered by a pharmacist and a clinical pharmacologist who used the algorithms to generate personalized recommendation letters.

RESULTS

We included a total of 20 patients, 13 with anticholinergic drugs and 7 without. Recommendations were made for 22 drugs in nine patients from the intervention group, of which seven letters (78%) were considered helpful and 8/22 (36%) anticholinergic drugs were discontinued, reducing anticholinergic load in seven patients. In contrast to patients without drug change, memory assessment in patients with reduced anticholinergic load improved significantly after 2 weeks (6 ± 3 vs. -1 ± 6 points).

CONCLUSIONS

The approach was well received by the participating physicians and might support standardized anticholinergic deprescribing.

Deprescribing electronic case reviews for older veterans at risk for falls: Effects on drug burden and falls

BACKGROUND

Falls are the most common medication-related safety event in older adults. Deprescribing fall risk-increasing drugs (FRIDs) may mitigate fall risk. This study assesses the effects of an innovative deprescribing program in reducing FRID burden and falls-related acute visits over 1 year.

METHODS

The Falls Assessment of Medications in the Elderly (FAME) Program is a pilot deprescribing program designed to improve medication safety in Veterans aged ≥65, screening positive for high fall risk at the Durham Veterans Affairs Health Care System. Central case finding and electronic case reviews with deprescribing recommendations were completed by an interdisciplinary team, forwarded to prescribers for approval, then implemented during follow-up telephone visits by FAME team. Primary outcome was change in FRID burden calculated by modified Drug Burden Index (DBI) at 1 year and an exploratory outcome was 1-year fall-related acute visits.

RESULTS

Overall, 472 patients (236 intervention cases, 236 matched controls) were included in the study. Of the 236 patients receiving a FAME deprescribing plan, 147 had recommendations approved by prescriber and patient. In the intention-to-treat analysis, the 1-year change in modified DBI was -0.15 (95% CI -0.23, -0.08) in the intervention cohort and -0.11 (-0.21, -0.00) in the matched control cohort (p = 0.47). The odds of increasing DBI by a clinically important threshold of 0.5 was significantly lower in the FAME cohort (OR 0.37, 0.21, 0.66). Fall-related acute events occurred in 6.3% of patients in the intervention group versus 11.0% in control patients over a one-year period (p = 0.10).

CONCLUSIONS

The program was associated with a significantly lower odds of further increasing FRID burden at 1 year compared to matched controls. An electronic case review and telephone counseling program has the potential to reduce drug-related falls in high-risk older adults.

The Drug Burden Index and Level of Frailty as Determinants of Healthcare Costs in a Cohort of Older Frail Adults in New Zealand

OBJECTIVES

Frailty is common in older people and is associated with increased use of healthcare services and ongoing use of multiple medications. This study provides insights into the healthcare cost structure of a frail group of older adults in Aotearoa, New Zealand. Furthermore, we investigated the relationship between participants' anticholinergic and sedative medication burden and their total healthcare costs to explore the viability of deprescribing interventions within this cohort.

METHODS

Healthcare cost analysis was conducted using data collected during a randomized controlled trial within a frail, older cohort. The collected information included participant demographics, medications used, frailty, cost of service use of aged residential care and outpatient hospital services, hospital admissions, and dispensed medications.

RESULTS

Data from 338 study participants recruited between 25 September 2018 and 30 October 2020 with a mean age of 80 years were analyzed. The total cost of healthcare per participant ranged from New Zealand $15 (US dollar $10) to New Zealand $270 681 (US dollar $175 943) over 6 months postrecruitment into the study. Four individuals accounted for 26% of this cohort's total healthcare cost. We found frailty to be associated with increased healthcare costs, whereas the drug burden was only associated with increased pharmaceutical costs, not overall healthcare costs.

CONCLUSIONS

With no relationship found between a patient's anticholinergic and sedative medication burden and their total healthcare costs, more research is required to understand how and where to unlock healthcare cost savings within frail, older populations.

Pharmacist-led medication review in a residential in-reach service leads to deprescribing

OBJECTIVE

To examine the effect of a pharmacist-led medication review on deprescribing medications in a Residential In-Reach (RIR) service which provides acute care substitution to residential aged care residents.

METHODS

A pre-post observational study was conducted. Patient characteristics and admission and discharge medications were collected over two 3-month phases before (prephase) and after (postphase) the introduction of a pharmacist who performed a comprehensive medication review and provided deprescribing recommendations. The Screening Tool of Older Persons' Prescriptions (STOPP) version 2 was used to identify potentially inappropriate medications (PIMs). The Drug Burden Index (DBI) was used to measure cumulative anticholinergic and sedative medication burden. Outcome of deprescribing was measured by the reduction in the number of PIMs, DBI scores and proportion of polypharmacy from admission to discharge.

RESULTS

The prephase included 59 patients (mean age 87.3 years, 63% female), and the postphase included 88 patients (mean age 87.3 years, 63% female). There was a significant reduction in the mean number of PIMs (pre +0.05 ± 2.59 vs. post -0.78 ± 2.32, p = 0.04) and median DBI (pre -0.004 ± 0.17 vs. post -0.07 ± 0.2, p = 0.03) in postphase compared to prephase. The proportion of polypharmacy at discharge was reduced in the postphase (pre-100% vs. post-90%, p = 0.01). The most deprescribed PIMs as measured by STOPP in postphase were drugs without indication, cardiovascular system drugs and gastrointestinal system drugs.

CONCLUSIONS

The introduction of a pharmacist-led medication review in RIR service was associated with a significant reduction in the mean number of PIMs, median DBI and polypharmacy. Future studies are needed to determine whether deprescription is sustained to examine correlations to long-term patient outcomes.

Anticholinergic Burden and Xerostomia in Critical Care Settings

BACKGROUND

Although previous studies have established the association of medications with anticholinergic adverse effects and xerostomia, anticholinergic burden and xerostomia in critical care settings are poorly characterized. The objective of this study was to determine the impact of medication burdens associated with anticholinergic adverse effects, particularly the occurrence of xerostomia (dry mouth) in a critical care setting. In addition, this study explored the correlation between the timing of the first instance of xerostomia and the administration timing of medication known to have anticholinergic adverse effects.

METHODS

A retrospective case-control study was used with the MIMIC (Medical Information Mart for Intensive Care) III database. The MIMIC-III clinical database is a publicly available, deidentified, health-related database with more than 40 000 patients in critical care units from 2001 to 2012. Cases of xerostomia (n = 1344) were selected from clinical notes reporting "dry mouth," "xerostomia," or evidence of pharmacological treatment for xerostomia; control (n = 4032) was selected using the propensity analysis with 1:3 matching on covariates (eg, age, sex, race, ethnicity, and length of stay). The anticholinergic burden was quantified as the cumulative effect of anticholinergic activities using the Anticholinergic Burden Scale.

RESULTS

Anticholinergic burden significantly differed between xerostomia patients and control subjects (P = .04). The length of stay was a statistically significant factor in xerostomia. The probability of developing the symptom of xerostomia within 24 hours was .95 (95%) for patients of xerostomia.

CONCLUSIONS

Anticholinergic Burden Scale is associated with xerostomia in the critical care setting, particularly within 24 hours after admission. It is crucial to carefully evaluate alternative options for medications that may have potential anticholinergic adverse effects. This evaluation should include assessing the balance between the benefits and harms, considering the probability of withdrawal reactions, and prioritizing deprescribing whenever feasible within the initial 24-hour period.

Association of drug burden index with delirium in community-dwelling older adults with dementia: a longitudinal observational study

BACKGROUND

The Drug Burden Index (DBI) is a validated tool for assessing the dose-dependent cumulative exposure to sedative and anticholinergic medications. However, the increased risk of delirium superimposed dementia (DSD) with high DBI levels has not yet been investigated.

AIM

This study aimed to examine the potential association between DBI scores and delirium in community-dwelling older adults with dementia.

METHOD

A total of 1105 participants with cognitive impairment underwent a comprehensive geriatric assessment. Experienced geriatricians made the final diagnosis of delirium based on DSM-IV-TR and DSM-V. We calculated the DBI as the sum of all sedatives and anticholinergics taken continuously for at least four weeks before admission. Polypharmacy was defined as regular use of five or more medications. We classified the participants as having no exposure (DBI = 0), low exposure (0 < DBI < 1), and high exposure (DBI ≥ 1).

RESULTS

Of the 721 patients with dementia, the mean age was 78.3 ± 6.7 years, and the majority were female (64.4%). In the whole sample, low and high exposures to anticholinergic and sedative medications at admission were 34.1% (n = 246) and 38.1% (n = 275), respectively. Patients in the high-exposure group had higher physical impairment (p = 0.01), higher polypharmacy (p = 0.01), and higher DBI scores (p = 0.01). In the multivariate Cox regression analysis, high exposure to anticholinergic and sedative medications increased the risk of delirium 4.09-fold compared to the no exposure group (HR = 4.09, CI: 1.63-10.27, p = 0.01).

CONCLUSION

High exposure to drugs with sedative and anticholinergic properties was common in community-dwelling older adults. A high DBI was associated with DSD, highlighting the need for an optimal prescription in this vulnerable population.

TRIAL REGISTRATION

The trial was retrospectively registered at ClinicalTrials.gov. Identifier: NCT04973709 Registered on 22 July 2021.

The relationship between dry eye disease and anticholinergic burden

PURPOSE

Anticholinergic drugs are widely prescribed for many medical conditions. However, data on the association of anticholinergic burden with dry eye disease (DED) are limited. In this study, we aimed to examine the relationship between anticholinergic burden and DED.

METHODS

In this retrospective cohort study, we evaluated a total of 120 participants who underwent ophthalmological examination between February 2021 and February 2022. The drugs used by the patients in the last 2 months were recorded from the institute's electronic data system. Anticholinergic burden was assessed using the Anticholinergic Cognitive Burden (ACB) scale.

RESULTS

The mean age of those patients was 59.0 ± 11.6 years and more than half (n = 33, 64.7%) were women. Patients with DED had significantly higher Charlson comorbidity index scores (p = 0.01), lower Schirmer test values (p = 0.01), higher Ocular Surface Disease Index (OSDI) scores (p = 0.01), and higher anticholinergic burden (p = 0.01). There was a statistically significant positive correlation between ACB and OSDI scores (r = 0.22, p = 0.02) and a negative correlation between ACB scores and Schirmer test values (r = -0.46, p = 0.01). After adjusting for potential confounding factors (age, gender, and comorbidities), each 1-point increase in anticholinergic burden was found to result in a 2.97-fold increase in the risk of DED (OR: 2.97, 95% confidence interval: 1.22-7.24, p = 0.02).

CONCLUSION

Anticholinergic burden appears to be associated with DED. Therefore, greater caution in prescribing anticholinergic drugs for adult patients may be important in reducing the rates of many adverse outcomes.

The Prognostic Utility of Anticholinergic Burden Scales: An Integrative Review and Gap Analysis

BACKGROUND

Anticholinergic drugs are commonly prescribed, especially to older adults. Anticholinergic burden scales (ABS) have been used to evaluate the cumulative effects of multiple anticholinergics. However, studies have shown inconsistent results regarding the association between anticholinergic burden assessed with ABS and adverse clinical outcomes such as cognitive impairment, functional decline, and frailty. This review aims to identify gaps in research on the development, validation, and evaluation of ABS, and provide recommendations for future studies.

METHOD

A comprehensive search of five databases (MEDLINE, Embase, PsychInfo, CINAHL, CENTRAL) was conducted for relevant studies published from inception until 25 May 2023. Two reviewers screened for eligibility and assessed the quality of studies using different tools based on the study design and stage of the review framework. Research evidence was evaluated, and gaps were identified and grouped into evidence, knowledge, and methodological gaps, using evidence tables to summarize data.

RESULTS

Several evidence, knowledge, and methodological gaps in existing development, validation, and evaluation studies of ABS were identified. There is no universally accepted scale, and there is a need to define a clinically relevant threshold for measuring total anticholinergic burden. The current evidence has limitations, underrepresenting low- and middle-income countries, younger individuals, and populations with cognitive disabilities. The impact of anticholinergic burden on frailty is also understudied. Existing evaluation studies provide limited evidence on the benefit of reducing anticholinergic burden on clinical outcomes or the safety of anticholinergic deprescribing. There is also uncertainty regarding optimal reduction, clinically significant anticholinergic burden thresholds, and cost effectiveness.

CONCLUSIONS

Future research recommendations to bridge knowledge gaps include developing a risk assessment framework, refining ABS scales, establishing a standardized consensus scale, and creating a longitudinal measure of cumulative anticholinergic risk. Strategies to minimize bias, consider frailty, and promote multidisciplinary and multinational collaborations are also necessary to improve patient outcomes.

Drug Burden Index in Older Adults with Psychiatric Illnesses: A Cross-Sectional Study

BACKGROUND

Medications with anticholinergic and/or sedative properties are commonly used in the management of psychiatric illnesses. The burden of anticholinergic and sedative medication use has been measured by the Drug Burden Index (DBI) score tool. A higher DBI score has been associated with increased risk of falls, bone and hip fractures, and functional and cognitive impairment, among other serious health outcomes, especially in older adults.

OBJECTIVES

We aimed to describe the drug burden in older adults with psychiatric illnesses using DBI, determine the factors that are associated with the drug burden measured by DBI, and examine the association between DBI score and Katz for activities of daily living (ADL) index.

METHODS

A cross-sectional study was conducted in the psychogeriatric division of an aged-care home. The study sample comprised all inpatients, aged ≥ 65 years, diagnosed with psychiatric illness. The data obtained included demographic characteristics, duration of hospital stay, primary psychiatric diagnosis and comorbidities, functional status using the Katz ADL index, and cognitive status using the Mini-Mental State Examination (MMSE) score. DBI score was calculated for each anticholinergic and sedative medication used.

RESULTS

Of the 200 patients eligible for analysis, 106 (53.1%) were females and the mean age was 76 ± 9 years. The most commonly encountered chronic disorders were hypertension 102 (51%) and schizophrenia 94 (47%). The use of drugs with anticholinergic and/or sedative effects was seen in 163 (81.5%) patients; the mean DBI score was 1.25 ± 1. The results of the multinomial logistic regression showed that schizophrenia (odds ratio (OR) = 2.1 (95% confidence interval (CI) 1.57-4.45), p = 0.01), level of dependency (OR = 3.50 (95% CI 1.38-5.70), p = 0.001), and polypharmacy (OR = 2.99 (95% CI 2.15-4.29), p = 0.003) were significantly associated with DBI score ≥ 1 compared to DBI score 0.

CONCLUSIONS

The study showed that anticholinergic and sedative medication exposure measured by DBI was associated with higher levels of dependency on the Katz ADL index in a sample of older adults with psychiatric illnesses from an aged-care home.

Evaluation of anticholinergic burden in elderly outpatients and the risk factors

OBJECTIVES

The use of anticholinergic drugs in the elderly may lead to negative events such as falls, delirium, urinary retention and cognitive decline, and the higher the number of anticholinergic drugs use, the more such negative events occur. This study aims to analyze the risk factors associated with the prescription of total anticholinergic drugs in elderly outpatients and evaluate the rationality of anticholinergic drugs, and to provide a reference for reducing the adverse effects of anticholinergic drugs.

METHODS

A list of drugs with anticholinergic activity based on the Beers criteria was established. The basic information (such as age and gender), clinical diagnosis, and medications of elderly outpatient were extracted from hospital electronic medical records, and the Anticholinergic Cognitive Burden (ACB) Scale was used to calculate the anticholinergic burden for each patient. Logistic regression analysis was used to identify the potential risk factors for the occurrence of problems such as multiple medication and insomnia.

RESULTS

A total of 1 840 prescriptions for elderly patients were reviewed. Of these patients, ACB score was more than or equal to 1 in 648 (35.22%) patients. Number of prescription medication (95% CI: 1.221 to 1.336) and insomnia (95% CI: 3.538 to 6.089) were independent factors affecting ACB scores (both P<0.01). Medications for patients of ACB scores were most commonly treated with the central nervous system drugs (such as alprazolam and eszopiclone) and for the cardiovascular system drugs (such as metoprolol and nifedipine).

CONCLUSIONS

There is a high rate of ACB drugs use in geriatric patients, and the clinical focus should be on multiple medication prescriptions, especially on the central nervous system drugs (such as alprazolam and eszopiclone) and cardiovascular system drugs (such as metoprolol and nifedipine). The prescription review should be emphasized to reduce adverse reactions to anticholinergic drugs in elderly patients.

Exposure to anticholinergic and sedative medication is associated with impaired functioning in older people with vertigo, dizziness and balance disorders-Results from the longitudinal multicenter study MobilE-TRA

Introduction: Anticholinergic and sedative medication is prescribed for various conditions in older patients. While the general association between anticholinergic and sedative medication and impaired functioning is well established, its specific role in older individuals with vertigo, dizziness, and balance disorders (VDB) is still incompletely understood. The objective of this study was to investigate, whether an exposure to anticholinergic and sedative medication is associated with lower generic and lower vertigo-specific functioning in older patients with VDB. Methods: Data originates from the longitudinal multicenter study MobilE-TRA with two follow-ups, conducted from 2017 to 2019 in two German federal states. Exposure to anticholinergic and sedative medication was quantified using the drug burden index (DBI). Generic functioning was assessed by the Health Assessment Questionnaire Disability Index, appraising the amount of difficulties in performing activities of daily living (ADL). Vertigo-specific functioning was measured using the Vestibular Activities and Participation (VAP) questionnaire, assessing patient-reported functioning regarding activities of daily living that are difficult to perform because of their propensity to provoke VDB (Scale 1) as well as immediate consequences of VDB on activities and participation related to mobility (Scale 2). Longitudinal linear mixed models were applied to assess the association of exposure to anticholinergic and sedative medication at baseline and the level of generic and vertigo-specific functioning status over time. Results: An overall of 19 (7 from Bavaria) primary care physicians (mean age = 54 years, 29% female) recruited 158 (59% from Bavaria) patients with VDB (median age = 78 years, 70% female). Anticholinergic and sedative medication at baseline was present in 56 (35%) patients. An exposure to anticholinergic and sedative medication at baseline was significantly associated with lower generic functioning [Beta = 0.40, 95%-CI (0.18; 0.61)] and lower vertigo-specific functioning [VAP Scale 1: Beta = 2.47, 95%-CI (0.92; 4.02)], and VAP Scale 2: Beta = 3.74, 95%-CI [2.23; 5.24]). Conclusion: Our results highlight the importance of a close monitoring of anticholinergic and sedative medication use in older patients with VDB. When feasible, anticholinergic and sedative medication should be replaced by equivalent alternative therapies in order to potentially reduce the burden of VDB.

Assessment Tools of Biopsychosocial Frailty Dimensions in Community-Dwelling Older Adults: A Narrative Review

Frailty is a complex interplay between several factors, including physiological changes in ageing, multimorbidities, malnutrition, living environment, genetics, and lifestyle. Early screening for frailty risk factors in community-dwelling older people allows for preventive interventions on the clinical and social determinants of frailty, which allows adverse events to be avoided. By conducting a narrative review of the literature employing the International Narrative Systematic Assessment tool, the authors aimed to develop an updated framework for the main measurement tools to assess frailty risks in older adults, paying attention to use in the community and primary care settings. This search focused on the biopsychosocial domains of frailty that are covered in the SUNFRAIL tool. The study selected 178 reviews (polypharmacy: 20; nutrition: 13; physical activity: 74; medical visits: 0; falls: 39; cognitive decline: 12; loneliness: 15; social support: 5; economic constraints: 0) published between January 2010 and December 2021. Within the selected reviews, 123 assessment tools were identified (polypharmacy: 15; nutrition: 15; physical activity: 25; medical visits: 0; falls: 26; cognitive decline: 18; loneliness: 9; social support: 15; economic constraints: 0). The narrative review allowed us to evaluate assessment tools of frailty domains to be adopted for multidimensional health promotion and prevention interventions in community and primary care.

Relapse of first-episode schizophrenia patients and neurocognitive impairment: The role of dopaminergic and anticholinergic burden

BACKGROUND

The prevention of relapse may be a key factor to diminish the cognitive impairment of first-episode schizophrenia (FES) patients. We aimed to ascertain the effects of relapse, and dopaminergic and anticholinergic treatment burdens on cognitive functioning in the follow-up.

METHODS

Ninety-nine FES patients participated in this study. Cognitive assessments were performed at baseline and after 3 years of follow-up or, in those patients who relapsed, after &gt;2 months of stabilization of the new acute psychotic episode. The primary outcomes were final cognitive dimensions.

RESULTS

Repeated measures MANOVA analyses showed improvements in the whole sample on the end-point assessments in processing speed and social cognition. However, only impairment in social cognition showed a significant interaction with relapse by time in this sample. Relapse in FES patients was significantly associated with poor performance on end-point assessments of working memory, social cognition and global cognitive score. Anticholinergic burden, but not dopaminergic burden, was associated with verbal memory impairment. These significant associations resulted after controlling for baseline cognitive functioning, relapse and dopaminergic burden.

CONCLUSIONS

The relationship between relapse and cognitive impairment in recovered FES patients seems to be particularly complex at the short-term follow-up of these patients. While relapse was associated with working memory, social cognition impairments and global cognitive score, anticholinergic burden might play an additional worsening effect on verbal memory. Thus, tailoring or changing antipsychotics and other drugs to reduce their anticholinergic burden may be a potential modifiable factor to diminish cognitive impairment at this stage of the illness.

Clinical Utility of Medication-Based Risk Scores to Reduce Polypharmacy and Potentially Avoidable Healthcare Utilization

The management of multiple chronic health conditions often requires patients to be exposed to polypharmacy to improve their health and enhance their quality of life. However, exposure to polypharmacy has been associated with an increased risk for adverse effects, drug-drug interactions, inappropriate prescribing, medication nonadherence, increased healthcare utilization such as emergency department visits and hospitalizations, and costs. Medication-based risk scores have been utilized to identify patients who may benefit from deprescribing interventions and reduce rates of inappropriate prescribing. These risk scores may also be utilized to prompt targeted discussions between patients and providers regarding medications or medication classes contributing to an individual’s risk for harm, eventually leading to the deprescribing of the offending medication(s). This opinion will describe existing medication-based risk scores in the literature, their utility in identifying patients at risk for specific adverse events, and how they may be incorporated in healthcare settings to reduce rates of potentially inappropriate polypharmacy and avoidable healthcare utilization and costs.

Associations of polypharmacy and drugs with sedative or anticholinergic properties with the risk of long-term care needs certification among older adults in Japan: A population-based, nested case-control study

AIM

To estimate the risk of disability associated with high-risk prescribing, such as polypharmacy and drugs with sedative or anticholinergic properties, using long-term care needs certification as a proxy of incident disability.

METHODS

A case-control study nested within a cohort of older adults (89% aged ≥65 years) was carried out between 2014 and 2019 using the combined medical claims and long-term care needs certification database of Tsukuba City, Japan. We identified 2123 cases who received their first long-term care certification, and matched them to 40 295 controls based on age, sex, residential area and observation period (≥36 months). The risk of long-term care needs certification associated with high-risk prescribing exposure 7-30 months before the index month was estimated using conditional logistic regression adjusting for baseline comorbidities and health service use.

RESULTS

Polypharmacy (5-9 drugs; adjusted odds ratio [aOR] 1.32, 95% confidence interval [95% CI] 1.18-1.47), hyperpolypharmacy (≥10 drugs; aOR 1.87, 95% CI 1.57-2.23) and cumulative dose of drugs with sedative or anticholinergic properties (1-364 defined daily dose [DDD]; aOR 1.07, 95% CI 0.97-1.19; 365-729 DDD; aOR 1.25, 95% CI 1.07-1.45; ≥730 DDD; aOR 1.33, 95% CI 1.19-1.62) had dose-response relationships with long-term care certification risks.

CONCLUSIONS

High-risk prescribing was associated with the risk of long-term care needs certification in the general older population. Further studies are warranted to examine whether a decrease in prescribing drugs with sedative or anticholinergic properties could reduce the long-term care burden on society. Geriatr Gerontol Int 2022; ••: ••-••.

Applying the AFRAID and FRIGHT clocks to novel preclinical mouse models of polypharmacy

The Frailty Inferred Geriatric Health Timeline (FRIGHT) and Analysis of Frailty and Death (AFRAID) clocks were developed to predict biological age and lifespan, respectively, in mice. Their utility within the context of polypharmacy (≥5 medications), which is very common in older adults, is unknown. In male C57BL/6J(B6) mice administered chronic polypharmacy, monotherapy, and undergoing treatment cessation (deprescribing), we aimed to compare these clocks between treatment groups; investigate whether treatment affected correlation of these clocks with mortality; and explore factors that may explain variation in predictive performance. Treatment (control, polypharmacy, or monotherapy) commenced from age 12 months. At age 21 months, each treatment group was subdivided to continue treatment or have it deprescribed. Frailty index was assessed and informed calculation of the clocks. AFRAID, FRIGHT, frailty index, and mortality age did not differ between continued treatment groups and control. Compared to continued treatment, deprescribing some treatments had inconsistent negative impacts on some clocks and mortality. FRIGHT and frailty index, but not AFRAID, were associated with mortality. The bias and precision of AFRAID as a predictor of mortality varied between treatment groups. Effects of deprescribing some drugs on elements of the clocks, particularly on weight loss, contributed to bias. Overall, in this cohort, FRIGHT and AFRAID measures identified no treatment effects and limited deprescribing effects (unsurprising as very few effects on frailty or mortality), with variable prediction of mortality. These clocks have utility, but context is important. Future work should refine them for intervention studies to reduce bias from specific intervention effects.

DOTA: Deep Learning Optimal Transport Approach to Advance Drug Repositioning for Alzheimer's Disease

Alzheimer's disease (AD) is the leading cause of age-related dementia, affecting over 5 million people in the United States and incurring a substantial global healthcare cost. Unfortunately, current treatments are only palliative and do not cure AD. There is an urgent need to develop novel anti-AD therapies; however, drug discovery is a time-consuming, expensive, and high-risk process. Drug repositioning, on the other hand, is an attractive approach to identify drugs for AD treatment. Thus, we developed a novel deep learning method called DOTA (Drug repositioning approach using Optimal Transport for Alzheimer's disease) to repurpose effective FDA-approved drugs for AD. Specifically, DOTA consists of two major autoencoders: (1) a multi-modal autoencoder to integrate heterogeneous drug information and (2) a Wasserstein variational autoencoder to identify effective AD drugs. Using our approach, we predict that antipsychotic drugs with circadian effects, such as quetiapine, aripiprazole, risperidone, suvorexant, brexpiprazole, olanzapine, and trazadone, will have efficacious effects in AD patients. These drugs target important brain receptors involved in memory, learning, and cognition, including serotonin 5-HT2A, dopamine D2, and orexin receptors. In summary, DOTA repositions promising drugs that target important biological pathways and are predicted to improve patient cognition, circadian rhythms, and AD pathogenesis.

Preclinical frailty assessments: Phenotype and frailty index identify frailty in different mice and are variably affected by chronic medications

Use of different objective frailty assessment tools may improve understanding of the biology of frailty and allow evaluation of effects of interventions on frailty. Polypharmacy is associated with increased risk of frailty in epidemiologic studies, regardless of frailty definition, but the pathophysiology of the association is not well understood. This study aims to (1) assess and compare the prevalence of frailty from middle to old age following control, chronic polypharmacy or monotherapy treatment, when measured using the clinical frailty index assessment and the mouse frailty phenotype tools; and (2) to evaluate and compare the effects of chronic polypharmacy regimens with zero, low and high Drug Burden Index (DBI) and monotherapies from middle to old age on the rate of deficit accumulation on the frailty index, mean number of phenotype criteria, odds of being frail assessed by the frailty index or phenotype, and the time to onset of frailty assessed by the frailty index or phenotype. In a longitudinal study, middle-aged (12 months) male C57BL/6J(B6) mice were administered non medicated control feed and water, or therapeutic doses of different polypharmacy combinations or monotherapies in feed and/or water. Frailty assessments were performed at 12, 15, 18, 21 and 24 months. There was limited overlap between animals identified as frail using different frailty assessments. Polypharmacy has measurable and different effects on each frailty assessment. Long-term chronic administration of some polypharmacy and monotherapy therapeutic drug regimens increased the number of frailty deficits (clinical frailty index: low DBI polypharmacy (15 and 21 months), high DBI polypharmacy (15-21 months), oxycodone (15-18 months), oxybutynin (15-18 months), citalopram (15-21 months) and metoprolol monotherapy (15 months) and modified frailty phenotype assessment (over the whole duration of treatment, low DBI polypharmacy (adjusted Risk Ratio(aRR) = 1.97, 95% confidence interval (CI) 1.43-2.72), high DBI polypharmacy (aRR = 1.88; 95% CI 1.36-2.60), oxybutynin (aRR = 1.48; 95% CI 1.01-2.16) and citalopram monotherapy (aRR = 1.96; 95% CI 1.41-2.74), p < 0.05) . The odds of developing frailty measured with the clinical frailty index increased with high DBI polypharmacy (adjusted odds ratio (aOR) = 3.13; 95% CI 1.01-9.66) and when measured with the frailty phenotype assessment increased with low DBI polypharmacy (aOR = 4.38, 95% CI 1.40-13.74), high DBI polypharmacy (aOR = 3.43; 95% CI 1.12-10.50) and citalopram monotherapy (aOR = 4.63; 95% CI 1.39-15.54)). No treatment affected time to frailty using either frailty assessment. Analysis of the number of deficits on the frailty index or number of positive criteria on the frailty phenotype allows analysis of rate of change and provides greater sensitivity, while the odds of being frail analysis provided a clinically relevant indicator of whether mice had greater chance of reaching a cut-off for becoming frail with medication exposure than without. Our results are consistent with clinical studies, demonstrating that certain polypharmacy regimens induce frailty, with different relationships observed when using different frailty assessments and analyses.

Potentially inappropriate medications and anticholinergic and sedative burden in older patients with haemophilia or von Willebrand disease: The M'HEMORRH-AGE study

WHAT IS KNOWN AND OBJECTIVE

In older patients, multiple chronic conditions lead to the intake of multiple medications and a higher risk of adverse drug events. The exposure to inappropriate medications in older patients with bleeding disorders is poorly explored. The aim of this study was to describe the exposure to potentially inappropriate medications (PIMs) and medications with anticholinergic and sedative properties in older community-dwelling patients with haemophilia or von Willebrand Disease (VWD).

METHODS

The M'HEMORRH-AGE study (Medication in AGEd patients with HAEMORRHagic disease) is a multicentre prospective observational study. Community-dwelling patients over 65 years with haemophilia or VWD were included in the study. PIMs were identified using the EU(7)-PIM list, and the anticholinergic and sedative drug exposure was measured using the Drug Burden Index.

RESULTS AND DISCUSSION

142 older community-dwelling patients with haemophilia (n = 89) or VWD (n = 53) were included (mean age: 72.8 ± 5.8 years). PIMs were used by 45.8% of older patients and were mainly represented by cardiovascular (34.9%), nervous systems (26.7%) and alimentary tract and metabolism PIMs (25.6%). Regarding anticholinergic and/or sedative medications, 37.3% of older patients were exposed mainly due to nervous system medications (68.3%), for example analgesics.

WHAT IS NEW AND CONCLUSION

The M'HEMORRH-AGE study showed the exposure to PIMs and anticholinergic/sedative medications was high in older community-dwelling patients with haemophilia or VWD. Interventions focusing on deprescription of these inappropriate medications should be conducted in this specific population.

Older adults’ exposure to anticholinergic medications: Implications for pharmaceutical care for Nigerian older adults

Introduction:

Anticholinergic medications which are commonly prescribed to older adults can produce more pronounced adverse effects compared to the younger population.

Objectives:

To investigate the prevalence of polypharmacy, describe the prescription patterns of anticholinergic medications, determine the prevalence of exposure to high-risk anticholinergic cognitive burden (ACB) medications, and identify the potential predictors of exposure to high-risk ACB medications in older adults in a Nigerian secondary hospital.

Methods:

This cross-sectional study that included older adults prescribed at least one anticholinergic medication was conducted at a secondary care hospital in Nigeria. The study data were initially summarized using descriptive statistics, whereas multivariable logistic regression analysis was used to identify the potential predictors of exposure to high-risk ACB medications. In this study, the cumulative ACB scores were dichotomized into low risk (score 1–2) and high risk (score ⩾ 3). A p value less than 0.05 was considered to be statistically significant.

Results:

A total of 256 older adults were included in this study; 113 (44.1%) had polypharmacy, whereas 26.6% (188/256) were exposed to high-risk ACB medications. Of a total of 391 anticholinergic medications used by the population, furosemide (36.57%) was the most commonly prescribed. The adjusted multivariable logistic regression analysis indicated that patients who had acute diseases were 2.5 times (adjusted odds ratio (AOR) = 2.49, 95% confidence interval (CI): 1.40–4.45) more likely to be exposed to high-risk ACB medications than those with chronic diseases.

Conclusion:

The study demonstrates a high prevalence of polypharmacy and exposure to high-risk ACB medications suggesting the need for pharmaceutical care in this high-risk population. Older adults’ exposure to high-risk ACB medications was significantly associated with prescriptions for acute diseases.

[Anticholinergic scales: Use in psychiatry and update of the anticholinergic impregnation scale]

Anticholinergic properties are well known to prescribers, notably in mental health, as a therapeutic strategy for i.e. extrapyramidal syndrome but also as a source of numerous adverse side effects. Herein, we propose a narrative literature review describing: (i) cholinergic pharmacology and anticholinergic properties; (ii) the importance of anticholinergic therapeutic properties in psychiatry; (iii) the existing anticholinergic drug scales and their usage limitations in Psychiatry and; last (iv) an update to the anticholinergic drug impregnation scale, designed for the French psychiatry practice. The anticholinergic side effects can appear both in the peripheral level (dry mouth, constipation, etc.) and in the central level (especially as cognitive deficits). Many of the so called « anticholinergic » drugs are in fact entirely or mostly antimuscarinic and act essentially as parasympathetic system antagonists. Overall, anticholinergic/antimuscarinic side effects are usually attributed to psychotropic medications: to certain antipsychotics, notably classical neuroleptics such as phenothiazine and also to tricyclic antidepressants. In practice, the impact of anticholinergic toxicity treatments is often highlighted due to their excessively prolonged use in patients on antipsychotics. Interestingly, these antipsychotic treatments are better known for their anticholinergic side effects, especially cognitive ones, with an early onset specially in elder patients and/or in the case of polymedication. In order to evaluate anticholinergic side effects, metrics known as anticholinergic burden scales were created in the last few decades. Nowadays, 13 different scales are documented and accepted by the international academic community, but only three of them are commonly used: the Anticholinergic Drug Scale (ADS), the Anticholinergic Risk Scale (ARS) and the Anticholinergic Burden Scale (ACB). All of them are based on a similar principle, consisting of grading treatments individually, and they are normally scored from 0 - no presence of side effects - to 3 - anticholinergic effects considered to be strong or very strong. Using these scales enables the calculation of the so-called "anticholinergic burden", which corresponds to the cumulative effect of using multiple medications with anticholinergic properties simultaneously. The application of anticholinergic scales to patients with psychiatric disorders has revealed that schizophrenic patients seem to be especially sensitive to anticholinergic cognitive side effects, while elder and depressed patients were more likely to show symptoms of dementia when exposed to higher anticholinergic burden. Unfortunately, these tools appear to have a low parallel reliability, and so they might induce large differences when assessing side effects predictability. In addition, the capacity of these scales to predict central adverse effects is limited due to the fact they poorly or do not differentiate, the ability of treatments to cross the blood-brain barrier. Finally, one last limitation on the validity of these scales is prescription posology is not accounted for side effects considered to be dose dependent. Recently, the MARANTE (Muscarinic Acetylcholine Receptor ANTagonist Exposure) scale has incorporated an anticholinergic burden weighting by posology. Nevertheless, this new model can be criticized, due to the limited number of medications included and due to testing a limited number of potency ranges and dosages for each treatment. Herein, we propose an update to the Anticholinergic Impregnation Scale, developed specifically for the French Psychiatry practice. The scale validation was based on an evaluation of the prescriptions correcting anticholinergic peripheral side effects (constipation, xerostomia and xeropthalmia). This indirect evaluation allowed us to show patients with an anticholinergic impregnation score higher than 5 received significantly more treatments for constipation and xerostomia. This strategy bypasses the bias of a cognitive evaluation in patients with severe mental health disorders. Moreover, the relevance of a tool developed specifically for French psychiatry is justified by the fact that some highly prescribed treatments for mental illness in France (cyamemazine and tropatemine) are strong anticholinergics, and also by the fact they are rarely included in the existing anticholinergic scales. This update of the original scale, published in 2017, includes information whether prescribed drugs cross the blood-brain barrier and thus makes possible a more accurate assessment when evaluating anticholinergic central side effects. Finally, the anticholinergic impregnation scale will soon be integrated into a prescription help software, which is currently being developed to take into consideration dose dependent adverse effects.

Anticholinergic and Sedative Medications and Dynamic Gait Parameters in Older Patients

BACKGROUND

Anticholinergic and sedative medications are associated with poorer physical function in older age. Gait and physical function have traditionally been assessed with the time needed to execute objective function tests. Accelerometer-based gait parameters provide a precise capturing of gait dynamics and patterns and as such have added value.

OBJECTIVES

This study examined the associations between cumulative exposure to anticholinergic and sedative medications and gait dimensions as assessed with accelerometer-based dynamic gait parameters.

METHODS

Data were collected from outpatients of a diagnostic geriatric day clinic who underwent a comprehensive geriatric assessment (CGA). Cumulative exposure to anticholinergic and sedative medications was quantified with the Drug Burden Index (DBI), a linear additive pharmacological dose-response model. From a total of 22 dynamic gait parameters, the gait dimensions 'Regularity', 'Complexity', 'Stability', 'Pace', and 'Postural Control' were derived using factor analysis (and standardized total scores for these dimensions were calculated accordingly). Data were analyzed with multivariable linear regression analysis, in which adjustment was made for the covariates age, gender, body mass index (BMI), Mini Mental State Examination (MMSE) score, Charlson Comorbidity Index (CCI) including dementia, and number of medications not included in the DBI.

RESULTS

A total of 184 patients participated, whose mean age was 79.8 years (± SD 5.8), of whom 110 (60%) were women and of whom 88 (48%) had polypharmacy (i.e., received treatment with ≥5 medications). Of the 893 medications that were prescribed in total, 157 medications (17.6%) had anticholinergic and/or sedative properties. Of the patients, 100 (54%) had no exposure (DBI = 0), 42 (23%) had moderate exposure (0 > DBI ≤ 1), while another 42 (23%) had high exposure (DBI >1) to anticholinergic and sedative medications. Findings showed that high cumulative exposure to anticholinergic and sedative medications was related with poorer function on the Regularity and Pace dimensions. Furthermore, moderate and high exposure were associated with poorer function on the Complexity dimension.

CONCLUSIONS

These findings show that in older patients with comorbidities, cumulative anticholinergic and sedative exposure is associated with poorer function on multiple gait dimensions.

Chronic Polypharmacy with Increasing Drug Burden Index Exacerbates Frailty and Impairs Physical Function, with Effects Attenuated by Deprescribing, in Aged Mice

Polypharmacy (use of ≥5 medications) and increasing Drug Burden Index (DBI) score (measure of person's total exposure to anticholinergic/sedative medications) are associated with impaired physical function in observational studies of older adults. Deprescribing, the supervised withdrawal of medications for which harms outweigh benefits for an individual, may be a useful intervention. Current knowledge is limited to clinical observational studies that are unable to determine causality. Here, we establish a preclinical model that investigates the effects of chronic polypharmacy, increasing DBI, and deprescribing on global health outcomes in aging. In a longitudinal study, middle-aged (12 months) male C57BL/6J (B6) mice were administered control feed or feed and/or water containing polypharmacy or monotherapy with different DBI scores. At 21 months, each treatment group was subdivided (stratified by frailty at 21 months) to either continue on treatment for life or to have treatment withdrawn (deprescribed). Frailty and physical function were evaluated at 12, 15, 18, and 24 months, and were analyzed using a mixed modeling approach. Polypharmacy with increasing DBI and monotherapy with citalopram caused mice to become frailer, less mobile, and impaired their strength and functional activities. Critically, deprescribing in old age reversed a number of these outcomes. This is the first preclinical study to demonstrate that chronic polypharmacy with increasing DBI augments frailty and impairs function in old age, and that drug withdrawal in old age reversed these outcomes. It was not the number of drugs (polypharmacy) but the type and dose of drugs (DBI) that caused adverse geriatric outcomes.

Development, validation and evaluation of the Goal-directed Medication review Electronic Decision Support System (G-MEDSS)©

OBJECTIVES

1) To understand and investigate the experiences of accredited clinical pharmacists (ACP) using computerised clinical decision support systems (CCDSS) during medication reviews for older people, including those living with dementia; 2) To design, develop, validate, and evaluate a CCDSS that incorporates pharmacological and other deprescribing tools to aid person-centred management of high-risk medications in older adults living with and without dementia.

METHODS

This study consisted of three phases and was designed on scenario-based methodology: a) the development phase, which included an exploratory survey and prototype building; b) the validation phase, which included qualitative data collection and usability testing with ACPs, general practitioners (GPs) and carers for people living with dementia; and c) the evaluation phase, using mixed-methods analyses.

RESULTS

The exploratory survey found that ACPs required a flexible, and reliable CCDSS to support them with clinical decisions regarding high-risk medication use in older adults. The Goal-directed Medication review Electronic Decision Support System (G-MEDSS)© was developed and validated using quantitative and qualitative feedback received from ACPs, GPs and carers for people with dementia. The mean (SD) System Usability Scale score was 69.0 (12.9), which indicated fair-good usability.

DISCUSSION AND CONCLUSIONS

Involving end-users in the design process refined and improved the design of G-MEDSS, allowing for a person-centred and goal-directed delivery of pharmaceutical care. G-MEDSS allows healthcare practitioners conducting medication reviews for older adults living with and without dementia to tailor pharmaceutical care to meet their goals and preferences. Future studies may explore integration of G-MEDSS with prescribing or dispensing software.

Risk of anticholinergic burden in adults with intellectual disabilities: a Scottish retrospective cohort study of n = 17 220

BACKGROUND

Several drugs have anticholinergic side effects that are associated with adverse health outcomes. Anticholinergic burden studies in adults with intellectual disabilities (ID) have focused exclusively on older adults. This study investigates anticholinergic burden and its associations in adults with ID of all ages (17-94 years).

METHODS

Adults with ID (n = 4 305), each with three general population age-sex-neighbourhood-matched controls (n = 12 915), were linked to their prescribed medications with anticholinergic effects between 2009 and 2017. Analyses were undertaken using logistic regression models.

RESULTS

Adults with ID were more likely to be prescribed any anticholinergic medicines, odds ratio (OR) = 1.49 (1.38-1.59), especially 'very strong' risk medicines, OR = 2.59 (2.39-2.81); 48.5% had very high total anticholinergic burden (3+) compared with 35.4% of the general population, OR = 1.77 (1.64-1.90). This group difference was greater for males, OR = 2.02 (1.84-2.22), than females, OR = 1.48 (1.33-1.65). Adults with ID had significantly higher odds of having very high total anticholinergic burden up to 75 years old, with the greatest group effect occurring in younger ages, 17-24-year-olds, OR = 3.05 (2.39-3.89), and the extent of the difference decreased as age increased. The main effect of neighbourhood deprivation showed greater group differences with increasing affluence of neighbourhood. Results examining only the ID group showed that very high total anticholinergic burden was greatest for females, OR = 1.21 (1.07-1.37), and those over age 55, and extent of neighbourhood deprivation was not significant.

CONCLUSIONS

Adults with ID are at higher risk of anticholinergic burden than the general population, especially young adults. Overall anticholinergic burden increased with age, but burden was high across all ages in the ID group. Very high total anticholinergic burden is prevalent across all types of neighbourhoods for the adults with ID, in contrast to the steeper gradient seen in the general population. Adults with ID have increased likelihood of unintended adverse effects, regardless of potential confounds, so clinicians undertaking medication reviews need to consider anticholinergic side effects and cumulative burden across concomitant medications, including in young adults with ID, not just older adults, and particularly women.

Supporting deprescribing in hospitalised patients: formative usability testing of a computerised decision support tool

Background

Despite growing evidence that deprescribing can improve clinical outcomes, quality of life and reduce the likelihood of adverse drug events, the practice is not widespread, particularly in hospital settings. Clinical risk assessment tools, like the Drug Burden Index (DBI), can help prioritise patients for medication review and prioritise medications to deprescribe, but are not integrated within routine care. The aim of this study was to conduct formative usability testing of a computerised decision support (CDS) tool, based on DBI, to identify modifications required to the tool prior to trialling in practice.

Methods

Our CDS tool comprised a DBI MPage in the electronic medical record (clinical workspace) that facilitated review of a patient’s DBI and medication list, access to deprescribing resources, and the ability to deprescribe. Two rounds of scenario-based formative usability testing with think-aloud protocol were used. Seventeen end-users participated in the testing, including junior and senior doctors, and pharmacists.

Results

Participants expressed positive views about the DBI CDS tool but testing revealed a number of clear areas for improvement. These primarily related to terminology used (i.e. what is a DBI and how is it calculated?), and consistency of functionality and display. A key finding was that users wanted the CDS tool to look and function in a similar way to other decision support tools in the electronic medical record. Modifications were made to the CDS tool in response to user feedback.

Conclusion

Usability testing proved extremely useful for identifying components of our CDS tool that were confusing, difficult to locate or to understand. We recommend usability testing be adopted prior to implementation of any digital health intervention. We hope our revised CDS tool equips clinicians with the knowledge and confidence to consider discontinuation of inappropriate medications in routine care of hospitalised patients. In the next phase of our project, we plan to pilot test the tool in practice to evaluate its uptake and effectiveness in supporting deprescribing in routine hospital care.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12911-021-01484-z.

Use of potentially inappropriate medications among older outpatients and inpatients in a tertiary care hospital in Malaysia

BACKGROUND

Older individuals are seemingly having more medical conditions, which predispose them to a greater risk of polypharmacy. Potentially inappropriate medications (PIMs), including those having anticholinergic and sedative properties, are common in their prescriptions, often associated with functional decline and negative health outcomes. Thus, this study reports proportions of inappropriate drugs and drug burden exposures and its correlation with patient-reported outcomes (PROs) among cognitively intact older adults admitted to a ward or visiting the outpatient clinic at a tertiary care hospital in Malaysia.

METHODS

This cross-sectional study included data from 344 older (173 inpatients and 171 outpatients) patients, aged 60 years and above, through validated questionnaires. Medication appropriateness was assessed via Medication Appropriateness Index (MAI) tool, whereas Beers and Screening Tool of Older Person's Potentially Inappropriate Prescribing (STOPP) criteria were used to evaluate PIMs and potentially inappropriate prescribing (PIP), respectively. The Drug Burden Index (DBI) and polypharmacy, as well as PROs, included Groningen Frailty Indicator (GFI), Katz Index of Independence in Activities of Daily Living (Katz ADL) and Older People's Quality of Life (OPQOL) were also evaluated.

RESULTS

Overall, inpatients received significantly higher medications (6.90 ± 2.70 vs 4.49 ± 3.20) than outpatients. A significantly higher proportion of inpatients received at least one PIM (65% vs 57%) or PIP (57.4% vs 17.0%) and higher mean MAI score (1.76 ± 1.08 and 1.10 ± 0.34) and DBI score (2.67 ± 1.28 vs 1.49 ± 1.17) than outpatients. Inpatients had significantly higher total OPQOL (118.53 vs 79.95) and GFI score (5.44 vs 3.78) than outpatients. We only found significant correlations between GFI and DBI and total OPQOL and the number of PIMs.

CONCLUSIONS

Proportions of PIMs and DBI exposure were significantly higher in an inpatient setting. No significant correlations between exposures to inappropriate medications or drug burden and PROs were observed.

Association Between Medications Acting on the Central Nervous System and Fall-Related Injuries in Community-Dwelling Older Adults: A New User Cohort Study

BACKGROUND

It is well established that individual medications that affect the central nervous system (CNS) increase falls risk in older adults. However, less is known about risks associated with taking multiple CNS-active medications.

METHODS

Employing a new user design, we used data from the Adult Changes in Thought study, a prospective cohort of community-dwelling people aged 65 and older without dementia. We created a time-varying composite measure of CNS-active medication exposure from electronic pharmacy fill data and categorized into mutually exclusive categories: current (within prior 30 days), recent (31-90 days), past (91-365 days), or nonuse (no exposure in prior year). We calculated standardized daily dose and identified new initiation. Cox proportional hazards models examined the associations between exposures and the outcome of fall-related injury identified from health plan electronic databases.

RESULTS

Two thousand five hundred ninety-five people had 624 fall-related injuries over 15,531 person-years of follow-up. Relative to nonuse, fall-related injury risk was significantly greater for current use of CNS-active medication (hazard ratio [HR] = 1.95; 95% CI = 1.57-2.42), but not for recent or past use. Among current users, increased risk was noted with all doses. Risk was increased for new initiation compared with no current use (HR = 2.81; 95% CI = 2.09-3.78). Post hoc analyses revealed that risk was especially elevated with new initiation of opioids.

CONCLUSIONS

We found that current use, especially new initiation, of CNS-active medications was associated with fall-related injury in community-dwelling older adults. Increased risk was noted with all dose categories. Risk was particularly increased with new initiation of opioids.

Application of the GheOP3S-tool in nursing home residents: acceptance and implementation of pharmacist recommendations

Background and objective: The prevalence of potentially inappropriate prescribing (PIP) among nursing home (NH) residents is high. This study aimed to investigate the acceptance and implementation of pharmacist recommendations based on a screening tool for PIP, the Ghent Older People's Prescriptions community Pharmacy Screening (GheOP³S)-tool. Setting and method: Prospective observational study in NH residents (≥ 70 years, using ≥ 5 medications) with a 3-month follow-up period. A pharmacist screened the medication lists using the GheOP³S-tool and formulated recommendations to reduce PIP. The acceptance of recommendations discussed during face-to-face pharmacist-general practitioner (GP) meetings was recorded. Implementation was examined by comparing baseline and follow-up medication lists. A pre-post comparison of the number of chronic medications and GheOP³S-criteria; the anticholinergic and sedative burden quantified by the Drug Burden Index (DBI); and medication costs was performed. Results: Screening with the GheOP³S-tool resulted in 168 pharmacist recommendations for 50 NH residents, mainly to stop (78.0%) and to substitute (14.3%) medications. Ninety-three % (156/168) of recommendations were considered relevant. GPs acceptance rate was 44.9%. Fifty-four % of all accepted recommendations were implemented. At follow-up, the number of chronic medications (p = 0.007), and DBI scores (p = 0.004) significantly differed from baseline. There was no significant decrease in the number of GheOP³S-criteria (p = 0.075) and medication costs (p > 0.05). Conclusion: The acceptance and implementation of pharmacist recommendations were relatively low. Future studies should increase the involvement of patients and all health-care providers. Interdisciplinary collaboration with sufficient education for all disciplines and patients is essential.

Electronic Medication Management System Introduction and Deprescribing Practice in Post-Acute Care

OBJECTIVE

To determine the effect of introducing an electronic medication management system (EMMS) on deprescribing practice in a post-acute hospital setting.

DESIGN

This study used a before-after study design.

SETTING AND PARTICIPANTS

This study examined the admission and discharge medications prescribed to patients admitted to an Australian post-acute hospital before and after the introduction of an EMMS.

METHODS

Data were collected over a 1-month period before and after the introduction of an EMMS and included summary measures of drug burden including Potentially Inappropriate Medications and the Drug Burden Index. We calculated and compared admission and discharge medication prescription as well as change in medication use before and after the introduction of an EMMS.

RESULTS

Medication prescription data were available for 121 people before and 107 people after EMMS introduction. In both phases, when compared with admission, those discharged were prescribed fewer medications (mean reduction pre-EMMS = 2.9, P < .001, post-EMMS = 2.6, P < .001), fewer Potentially Inappropriate Medications (mean reduction pre-EMMS = 0.4, P < .001, post-EMMS = 0.6, P < .001) and had lower Drug Burden Index (mean reduction pre-EMMS = 0.1, P < .001, post-EMMS = 0.2, P < .001). The degree of reduction in each measure was similar before and after EMMS introduction.

CONCLUSIONS AND IMPLICATIONS

The introduction of an EMMS did not affect deprescribing practice in a post-acute hospital setting. Future work is required to explore the potential for clinical decision support within an EMMS to further improve the safety and effectiveness of deprescribing within post-acute care.

Quantifying cumulative anticholinergic and sedative drug load among US Medicare Beneficiaries

PURPOSE

Medications with anticholinergic and sedative properties are widely used among older adults despite strong evidence of harm. The drug burden index (DBI), a pharmacological screening tool, measures these properties across drug classes, and higher DBI drug exposure (DBI > 1) has been associated with certain physical function-related adverse events. Our aim was to quantify mean daily DBI drug exposure among older adults in the United States (US).

METHODS

We screened medications for DBI properties and operationalized the DBI for US Medicare claims. We then conducted a retrospective cohort study of a 20% random, nationwide sample of 4 137 384 fee-for-service Medicare beneficiaries aged 66+ years (134 757 039 person-months) from January 2013 to December 2016. We measured the monthly distribution based on mean daily DBI, categorized as (a) >0 vs 0 (any use) and (b) 0, 0 < DBI ≤ 1, 1 < DBI ≤ 2, and DBI > 2, and examined temporal trends. We described patient-level factors (eg, demographics, healthcare use) associated with high (>2) vs low (0 < DBI≤1) DBI drug exposure.

RESULTS

The distribution of the mean daily DBI, aggregated at the month-level, was: 58.1% DBI = 0, 29.0% 0 < DBI≤1, 9.3% 1 < DBI≤2, and 3.7% DBI > 2. Predictors of high monthly DBI drug exposure (DBI > 2) included certain indicators of increased healthcare use (eg, high number of drug claims), white race, younger age, frailty, and a psychosis diagnosis code.

CONCLUSIONS

The predictors of high DBI drug exposure can inform discussions between patients and providers about medication appropriateness and potential de-prescribing. Future Medicare-based studies should assess the association between the DBI and adverse events.

Size of the associations between anticholinergic burden tool scores and adverse outcomes in older patients

Background Several anticholinergic scales and equations to evaluate the anticholinergic burden have been previously created. Association of these instruments with the anticholinergic outcomes are usually estimated by means of hypothesis contrast tests, which ignore the size of the association effect. Objective To evaluate the effect size of the associations between the scores on cumulative anticholinergic burden instruments with peripheral or central anticholinergic adverse outcomes in older patients. Setting Internal medicine ward of a Tertiary University Hospital. Methods A case-control study was conducted in patients over 65 years who were admitted to two internal medicine wards of a Portuguese university hospital. The Anticholinergic Drug Scale, Anticholinergic Risk Scale, Anticholinergic Cognitive Burden scale and Drug Burden Index were used to calculate the patients' anticholinergic burden. Peripheral (dry mouth-swab technique; dry eye-Schirmer test) and central (falls and cognitive impairment-Mini-Mental State Examination) anticholinergic adverse outcomes were investigated. The Barthel Index was used to assess overall physical functionality. The Mann-Whitney test was used to evaluate probabilistic differences in the anticholinergic scores between case and control individuals. To establish the effect size of the associations, the area under the curve of the receiver operating characteristics curve was calculated. Main outcome measure Anticholinergic adverse effects. Results A total of 250 patients (mean age 81.67 years, standard deviation 7.768; 50% females) were included. In total, 148 patients (59.2%) presented with dry mouth, 85 (34%) with dry eye, 141 (56.4%) with impaired functionality, 44 (17.6%) with a history of falls and 219 (87.6%) with cognitive impairment. Significant differences (p < 0.05) were obtained for the majority of the associations between Anticholinergic Drug Scale, Anticholinergic Risk Scale, Anticholinergic Cognitive Burden and Drug Burden Index and adverse effects. Conversely, the effect sizes of these associations ranged from "fail" (area under the curve 0.5 to 0.6) to "fair" (area under the curve 0.7 to 0.8). Conclusion Although significant differences in the scores of anticholinergic burden instruments and adverse outcomes may exist, the effect sizes of these associations ranged from 'fail' to 'fair', which limits their utility in preventing anticholinergic adverse outcomes with medication review interventions.

Using pharmacy dispensing data to predict falls in older individuals

Aims

Associations between individual medication use and falling in older individuals are well‐documented. However, a comprehensive risk score that takes into account overall medication use and that can be used in daily pharmacy practice is lacking. We, therefore, aimed to determine whether pharmacy dispensing records can be used to predict falls.

Methods

A retrospective cohort study was conducted using pharmacy dispensing data and self‐reported falls among 3454 Dutch individuals aged ≥65 years. Two different methods were used to classify medication exposure for each person: the drug burden index (DBI) for cumulative anticholinergic and sedative medication exposure as well as exposure to fall risk‐increasing drugs (FRIDs). Multinomial regression analyses, adjusted for age and sex, were conducted to investigate the association between medication exposure and falling classified as nonfalling, single falling and recurrent falling. The predictive performances of the DBI and FRIDs exposure were estimated by the polytomous discrimination index (PDI).

Results

There were 521 single fallers (15%) and 485 recurrent fallers (14%). We found significant associations between a DBI ≥1 and single falling (adjusted odds ratio: 1.30 [95% confidence interval {CI}: 1.02–1.66]) and recurrent falling (adjusted odds ratio: 1.60 [95%CI: 1.25–2.04]). The PDI of the DBI model was 0.41 (95%CI: 0.39–0.42) and the PDI of the FRIDs model was 0.45 (95%CI: 0.43–0.47), indicating poor discrimination between fallers and nonfallers.

Conclusion

The study shows significant associations between medication use and falling. However, the medication‐based models were insufficient and other factors should be included to develop a risk score for pharmacy practice.

Anticholinergic and Sedative Drug Burden and Functional Recovery after Cerebrovascular Accident: A Retrospective Descriptive Study

Objectives:

Medications with anticholinergic or sedative effects induce impaired cognitive and physical performances. The aim of this study was to evaluate the associations of anticholinergic and sedative drug burden with recovery of physical function and activities of daily living in patients admitted to a Japanese rehabilitation hospital after cerebrovascular accidents.

Methods:

We retrospectively reviewed the medical records of patients aged 18 years or older who had undergone the inpatient rehabilitation program for cerebrovascular disease in Nerima Ken-ikukai Hospital. Patients who did not complete the rehabilitation program because of acute unexpected changes of physical or psychological condition or the need for surgical procedures were excluded. The primary outcome was recovery of activities of daily living as measured by the motor and cognitive subscores of the Functional Independence Measure. The secondary outcome was recovery of physical function as assessed by the 10-m walk test and the Berg balance scale. Multiple Cox proportional hazard regression analyses were conducted to calculate hazard ratios with 95% confidence intervals for the outcome measures.

Results:

Of 122 patients included in the study, 81 (66%) were exposed to anticholinergics and sedatives. Patients’ age, body mass index, and average daily drug burden during hospitalization were independently associated with achieving the cutoff Functional Independence Measure–motor subscore. Patients’ age and average daily drug burden during hospitalization were independently associated with achieving the Berg balance scale cut-off score.

Conclusions:

Our study of Japanese patients who were transferred from acute stroke care hospitals to a rehabilitation facility identified the drug burden of anticholinergics and sedatives as an independent factor associated with the time to recovery of activities of daily living and postural balance.

Medication burden in epilepsy: Exploring the impact of non-epilepsy concomitant drugs load

PURPOSE

To determine the burden of non-epilepsy drugs on people with epilepsy, using administrative health care data.

METHODS

The Achmea Health Insurance Database (AHID) contains health claims data from 25 % of the Dutch population. From the AHID, we selected all policyholders with coverage for at least one full calendar year between 2006-2009. We included adults with diagnostic codes for epilepsy and randomly selected two frequency-matched controls per case. We labeled drugs dispensed at least twice per calendar year as chronic and excluded antiseizure medications. We estimated and compared the prevalence of chronic medication use, number of chronic medications used, number of prescriptions dispensed, Rx Risk comorbidity index, and drug burden index (DBI) between people with epilepsy and controls.

RESULTS

Non-epilepsy chronic medication use was more frequent in people with epilepsy than controls (67 % versus 59 %, p < 0.001). People with epilepsy had an increased DBI (average 0.19 versus 0.10, p < 0.001), used more chronic medications (median 2 versus 1, p < 0.001) and had more prescriptions dispensed (median 7 versus 3, p < 0.001). The DBI and number of unique chronic medications were higher among older (>60 years) than younger (<60 years) subjects in cases and controls. Non-epilepsy chronic medication use was more prevalent in people with epilepsy across all therapeutic drug classes and most comorbidities measured using the Rx Risk score.

CONCLUSION

Chronic non-epilepsy medication use is more prevalent among people with epilepsy. The medication burden is higher among elderly with epilepsy and could partially explain the lower quality of life of people with epilepsy with comorbidities.

Drug Burden Index and Cognitive and Physical Function in Aged Care Residents: A Longitudinal Study

OBJECTIVES

Anticholinergic/antimuscarinic and sedative medications (eg, benzodiazepines) have been found to be associated with poorer cognitive and physical function and mobility impairment in older age. However, previous studies were mostly conducted among community-dwelling older individuals and had often a cross-sectional design. Accordingly, our aim was to examine longitudinal associations between cumulative exposure to anticholinergic and sedative medications and cognitive and physical function among residents from aged care homes.

DESIGN

Longitudinal study.

SETTING AND PARTICIPANTS

A total of 4624 residents of Dutch aged care homes of whom data were collected between June 2005 and April 2014.

METHODS

Outcome measures were collected with the Long-Term Care Facilities assessment from the international Residential Assessment Instrument (interRAI-LTCF) and included the Cognitive Performance Scale, the Activities of Daily Living (ADL) Hierarchy scale, a timed 4-meter walk test, distance walked, hours of physical activity, and days being outside. Cumulative exposure to anticholinergic and sedative medications was calculated with the Drug Burden Index (DBI), a linear additive pharmacological dose-response model. Associations were examined with linear mixed models to take the potential dependence of observations into account (ie, data were collected at repeated assessment occasions of residents who were clustered in aged care homes). Analyses were adjusted for sex, age, dementia, comorbidity (neurological, psychiatric, cardiovascular, oncological, and pulmonary), fractures, depressive symptoms, and medications excluded from the DBI.

RESULTS

We observed significant longitudinal associations between a higher DBI and poorer ADLs, fewer hours of physical activity, and fewer days being outside. We found no significant longitudinal association between a higher DBI and poorer cognitive function.

CONCLUSIONS AND IMPLICATIONS

Over time, cumulative exposure to anticholinergic and sedative medications is associated with poorer physical but not cognitive function in aged care residents. Careful monitoring of aged care residents with high cumulative anticholinergic and sedative medication exposure is needed.

Anticholinergic Burden Measures Predict Older People's Physical Function and Quality of Life: A Systematic Review

OBJECTIVES

This systematic review (PROSPERO CRD42019115918) compared the evidence behind anticholinergic burden (ACB) measures and their ability to predict changes in older people's physical function and quality of life.

DESIGN

Eligible cohort or case-control studies were identified systematically using comprehensive search terms and a validated search filter for prognostic studies. Medline (OVID), EMBASE (OVID), CINAHL (EMBSCO), and PsycINFO (OVID) databases were searched. Risk of bias, using Quality in Prognosis Studies tool, and quality of evidence, using the Grading of Recommendations, Assessment, Development and Evaluation, were assessed.

SETTING AND PARTICIPANTS

People aged 65 years and older from any clinical setting.

MEASURES

Any ACB measures were accepted (including the anticholinergic domain of the Drug Burden Index). Any global/multidimensional measure for physical function and/or quality of life was accepted for outcome.

RESULTS

Thirteen studies reporting associations between ACB and physical function (n = 10) or quality of life (n = 4) were included. Exposure measures included Anticholinergic Cognitive Burden Scale, Anticholinergic Drug Scale, Anticholinergic Risk Scale, Clinician Rated Anticholinergic Score, and the anticholinergic domain of the Drug Burden Index. All studies were rated moderate risk of bias in ≥2 Quality in Prognosis Studies categories with 5 rated high risk in ≥1 categories. Seven of 10 studies (5251 of 7569 participants) reported significant decline in physical function with increased burden. All 4 studies (2635 participants) reporting quality of life demonstrated similar association with increased burden. High risk of biases and inadequate data reporting restricted analysis. There was no evidence to support one measure being superior to another.

CONCLUSIONS AND IMPLICATIONS

The evidence supports association between increased ACB and future impairments in physical function and quality of life. No conclusion can be made regarding which ACB measure has the best prognostic value. Well-designed longitudinal studies are required to address this. Clinicians should be aware of patient's anticholinergic burden and consider alternative medications where appropriate.

Residential Aged Care Pharmacist: An Australian Pilot Trial Exploring the Impact on Quality Use of Medicines Indicators

Background: This pilot study aimed to assess whether an on-site pharmacist could influence indicators of quality use of medicines in residential aged care. Methods: A pharmacist was embedded in a residential aged care home for six months. A similar control site received usual care. Polypharmacy, drug burden index, antipsychotic and benzodiazepine use, hospital admission rates and length of stay, and emergency department presentation rates were outcomes used to indicate medication use quality. Data were extracted from participating resident health records. Results: Fifty-eight residents at the study site and 39 residents at the control site were included in the analysis. There was a reduction in the proportion of residents at the study site who had at least one hospital admission at follow-up (28% to 12%, p < 0.01), but no significant difference in other outcomes. Conclusions: This pilot study suggests that a residential care pharmacist may positively influence indicators of medication use quality in aged care; however, further research is needed to expand on these findings.

Pharmacist-led intervention to improve medication use in older inpatients using the Drug Burden Index: a study protocol for a before/after intervention with a retrospective control group and multiple case analysis

INTRODUCTION

Polypharmacy and potentially inappropriate medication use is common in older adults and is associated with adverse outcomes such as falls and hospitalisations.

METHODS AND ANALYSIS

This study is a pharmacist-led medication optimisation initiative using an electronic tool (the Drug Burden Index (DBI) Calculator) in four hospital sites in the Canadian province of Nova Scotia. The study aims to enrol 160 participants between the preintervention and intervention groups. The Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT 2013 checklist) was used to develop the protocol for this prospective interventional implementation study. A preintervention retrospective control cohort and a multiple case study analysis will also be used to assess the effect of intervention implementation. Statistical analysis will involve change in DBI scores and assessment of clinical outcomes, such as rehospitalisation and mortality using appropriate statistical tests including t-test, χ², analysis of variance and unadjusted and adjusted regression methods.

ETHICS AND DISSEMINATION

Ethics approval has been granted by the Nova Scotia Health Authority Research Ethics Board. The findings of this study will be published in peer-reviewed journals and presented at local, national and international conferences.

TRIAL REGISTRATION NUMBER

NCT03698487.

Anticholinergic Drugs in Geriatric Psychopharmacology

Drugs with anticholinergic action are widely prescribed in the elderly population due to their potential clinical benefits. However, these benefits are limited by adverse effects which may be serious in particular circumstances. This review presents different aspects of the use of anticholinergics in old age with a focus in psychogeriatric patients. We critically review published data on benefits and disadvantages of anticholinergics, which are often controversial. Prevalence, pathophysiology and measurement methods of the anticholinergic action of drugs are discussed. We also present the most important drawbacks resulting from its use, including effects on cognition in healthy and cognitively impaired people, in aged schizophrenia patients, emergence of delirium and psychiatric symptoms, influence in functionality, hospitalization, institutionalization and mortality, and the potential benefits and limitations of their discontinuation. Finally, we suggest practical recommendations for the safe use of anticholinergics in clinical conditions affecting elderly patients, such as dementia, schizophrenia and acute hallucinatory episodes, depression, anxiety, Parkinson's disease, cardiovascular conditions and urinary incontinence.

Anticholinergic Burden, Sleep Quality and Health Outcomes in Malaysian Aged Care Home Residents

The use of anticholinergic medications by residents in aged care homes is associated with increased risk of adverse effects. These include cognitive impairment, sleep disturbances, and falls, and necessitate increased healthcare visits and the associated burden on healthcare systems. The objective of this study was to investigate associations between anticholinergic burden and health outcomes such as independence in activities for daily living, frailty, quality of life, and sleep quality. The study was conducted among residents in Malaysian aged care homes, aged 60 years and above. Anticholinergic burden was calculated using the Anticholinergic Cognitive Burden (ACB) scale. Health outcome measures included independence, assessed using the Katz Activities for Daily Living scale (Katz ADL); quality of life, assessed using the Older People’s Quality of Life Questionnaire (OPQOL); frailty, assessed using the Groningen Frailty Index (GFI); and sleep quality, measured using the Pittsburg Sleep Quality Index (PSQI). Just over one-third (36%) of the study population was exposed to at least one medication with anticholinergic effect. An increased anticholinergic cognitive burden was associated with frailty (p = 0.031), sleep latency (p = 0.007), and sleep disturbances (p = 0.015). Further studies are required to assess the effect of prolonged exposure to anticholinergic medications on health outcomes.