Prescribing of psychotropic medications to the elderly population of a Canadian province: a retrospective study using administrative databases

Patterns of Antipsychotic Dispensation to Long-Term Care Residents

OBJECTIVES

To describe dispensing patterns of antipsychotic medications to long-term care (LTC) residents and assess factors associated with continuation of an antipsychotic after a fall-related hospitalization.

DESIGN

A retrospective cohort study.

SETTING AND PARTICIPANTS

Nova Scotia Seniors Pharmacare Program (NSSPP) beneficiaries age 66 years and older who resided in LTC and received at least 1 dispensation of an antipsychotic within the study period of April 1, 2009, to March 31, 2017.

METHODS

Linkage of administrative claims data from the NSSPP and the Canadian Institute of Health Information Discharge Abstract Database identified LTC residents with an antipsychotic dispensation and from the subgroup of those dispensed antipsychotic medications who experienced a fall-related hospitalization. Antipsychotic dispensing patterns were reported with counts and means. Predictors of continuation of an antipsychotic after a fall-related hospitalization (sex, length of stay, days supplied, age, year of admission, rural/urban) were reported and analyzed with multiple logistic regression.

RESULTS

There were 19,164 unique NSSPP beneficiaries who were dispensed at least 1 prescription for an antipsychotic medication. Of those who received at least 1 antipsychotic dispensation 90% (n = 17,201) resided in LTC. A mean of 40% (n = 2637) of LTC residents received at least 1 antipsychotic dispensation in each year. Risperidone and quetiapine were dispensed most frequently. Of the 544 beneficiaries residing in LTC who survived a fall-related hospitalization, 439 (80.7%) continued an antipsychotic after hospital discharge. Female sex [OR 1.7, 95% CI (1.013‒2.943)], age 66‒69 [OR 4.587, 95% CI (1.4‒20.8)], 75-79 [OR 2.8, 95% CI (1.3‒6.3)], and 80‒84 years [OR 3.1, 95% CI (1.6‒6.4)] (compared with age 90+ years) were associated with increased risk of antipsychotic continuation.

CONCLUSIONS AND IMPLICATIONS

With 90% of antipsychotic dispensations in Nova Scotia being to LTC residents and 40% of LTC residents being dispensed antipsychotics in any year there is a need to address this level of antipsychotic dispensation to older adults.

[Antipsychotic prescription prevalence and metabolic monitoring of patients under chronic treatment]

Introduction

Antipsychotics agents increase morbidity and mortality due to their metabolic impact. Information on its prescription and follow-up is scarce. The objective of this study was to estimate the chronic antipsychotic prescription prevalence and to evaluate the metabolic monitoring of patients treated with these medications.

Methods

We examined a retrospective cohort of patients older than 18 years treated in the outpatient setting of a hospital in Argentina. The crude and adjusted prevalence of chronic antipsychotic prescription was estimated by indirect standardization of the World Health Organization population, with its confidence interval (95%). It was evaluated whether the patients had biochemical determinations, systolic blood pressure (SBP), and body mass index (BMI) at the beginning and at 12 months of their treatment.

Results

The crude antipsychotic prescription prevalence was 23.8 ‰ (95% CI 23.0 - 24.6) and the adjusted prevalence was 10.1 ‰ (95% CI 9.5-10.7). 3702 patients were evaluated. The male:female ratio was 0.6. Median age 77.5 years (IQR 25-75: 59.5-86.1). Quetiapine was the most frequently prescribed. Initial determinations: Lipid profile 1804 (48.7%), blood glucose 2034 (54.9%), SBP 2546 (68.8%) and BMI 1584 (42.8%). At 12 months: Lipid profile 680 (18.4%), blood glucose 898 (24.3%), SAT 1609 (43.5%), and BMI 1584 (21.7%).

Conclusions

We observed a higher prevalence of atypical antipsychotic prescription in the elderly and female population and scarce registry of biochemical determinations for adverse effects follow-up.

[Antipsychotic prescription prevalence and metabolic monitoring of patients under chronic treatment]

INTRODUCTION

Antipsychotics agents increase morbidity and mortality due to their metabolic impact. Information on its prescription and follow-up is scarce. The objective of this study was to estimate the chronic antipsychotic prescription prevalence and to evaluate the metabolic monitoring of patients treated with these medications.

METHODS

We examined a retrospective cohort of patients older than 18 years treated in the outpatient setting of a hospital in Argentina. The crude and adjusted prevalence of chronic antipsychotic prescription was estimated by indirect standardization of the World Health Organization population, with its confidence interval (95%). It was evaluated whether the patients had biochemical determinations, systolic blood pressure (SBP), and body mass index (BMI) at the beginning and at 12 months of their treatment.

RESULTS

The crude antipsychotic prescription prevalence was 23.8 ‰ (95% CI 23.0 - 24.6) and the adjusted prevalence was 10.1 ‰ (95% CI 9.5-10.7). 3702 patients were evaluated. The male:female ratio was 0.6. Median age 77.5 years (IQR 25-75: 59.5-86.1). Quetiapine was the most frequently prescribed. Initial determinations: Lipid profile 1804 (48.7%), blood glucose 2034 (54.9%), SBP 2546 (68.8%) and BMI 1584 (42.8%). At 12 months: Lipid profile 680 (18.4%), blood glucose 898 (24.3%), SAT 1609 (43.5%), and BMI 1584 (21.7%).

CONCLUSIONS

We observed a higher prevalence of atypical antipsychotic prescription in the elderly and female population and scarce registry of biochemical determinations for adverse effects follow-up.

Measuring the impact of system level strategies on psychotropic medicine use in aged care facilities: A scoping review

BACKGROUND

Psychotropic medication use in the elderly population is associated with significant adverse effects. Robust evidence for the efficacy of psychotropic medications for behavioural and psychological symptoms of dementia is lacking. Despite national bodies, governments, and policymakers employing interventions to optimise the use of psychotropic medicines in this population, there is little research on their overall impact.

OBJECTIVE

To identify and categorise system level strategies that have been implemented internationally and assess their impact on psychotropic medicine use in aged care facilities.

METHODS

A systematic search of health-related databases including Medline, Embase, CINAHL, Web of Science and Scopus was performed. Empirical studies published in English prior to March 2019 that reported on the impact of system level strategies on psychotropic medicine use in aged care facilities were included. Studies were mapped to the RE-AIM (Reach, Effectiveness, Adoption, Implementation, Maintenance) framework to measure impact and were assessed for risk of bias.

RESULTS

This review identified 36 studies which examined mandatory (n = 22) and non-mandatory (n = 14) system level strategies. The impact of strategies was highly dependent on implementation as well as organisational and patient factors. Mandatory strategies had greater evidence of impact on drug utilisation patterns compared to non-mandatory strategies which primarily focussed on adoption and implementation, rather than outcomes. The Omnibus Budget Reconciliation Act 1987 (OBRA-87) in the United States of America had the greatest reach and implementation of the interventions examined, with an observed reduction in psychotropic medicine use post-implementation. There was no substantive body of evidence reporting on the sustainability of strategies or the influence of cost on outcomes.

CONCLUSIONS

Despite the implementation of system level strategies, psychotropic medicine use in aged care facilities remains problematic. There is a need for revised or novel system level strategies which consider sustainability, economic influences and patient outcomes in their design and implementation.

Antipsychotic Drug Dispensing in Older Adults With Parkinsonism

BACKGROUND

Antipsychotic drugs are commonly used to treat psychosis in patients with Parkinson disease; however, individuals with parkinsonism are at risk for serious adverse effects with antipsychotic use. The choice of antipsychotic is critical.

OBJECTIVE

To examine the frequency and pattern of antipsychotic prescribing to patients with Parkinson disease and parkinsonism over time.

METHODS

Individuals with parkinsonism aged 66 or older in Ontario were studied in a retrospective cohort study from 2005-2013 and followed for prevalent and/or incident antipsychotic drug dispensing.

RESULTS

In 2005, 15% of 22,837 individuals with prevalent parkinsonism were dispensed an antipsychotic drug. By 2013, the proportion was 11% of 34,262 individuals. Primary care physicians represented the vast majority of prescribers. Of individuals receiving antipsychotics in 2013, 20% were dispensed a typical antipsychotic drug. Among individuals with incident parkinsonism, living in a nursing home, older age, male sex, a greater number of comorbidities, and a prior diagnosis of dementia were significantly associated with an increased rate of receiving an antipsychotic during follow-up. Among those who received an antipsychotic, factors associated with typical antipsychotic exposure were absence of a prior diagnosis of dementia, higher Charlson comorbidity index, more concurrent medications, more recent year of first parkinsonism diagnosis and not having seen a neurologist, psychiatrist, or geriatrician.

CONCLUSION

A substantial proportion of individuals with parkinsonism are exposed to antipsychotic drugs, including typical antipsychotics. Given the risks of these drugs to individuals with parkinsonism, education of prescribers, particularly primary care physicians, is needed.

Antipsychotic Drug Dispensations in Older Adults, Including Continuation After a Fall-Related Hospitalization: Identifying Adherence to Screening Tool of Older Persons' Potentially Inappropriate Prescriptions Criteria Using the Nova Scotia Seniors' Pharmacare Program and Canadian Institute for Health's Discharge Databases

Purpose

Despite well-established concerns regarding adverse drug effects, antipsychotics are frequently prescribed for older adults. Our first objective was to identify trends in antipsychotic dispensations to older Nova Scotians. STOPP (Screening Tool of Older Persons’ Potentially Inappropriate Prescriptions) criteria identify antipsychotic use in those with a history of falls as potentially inappropriate. Our second objective was to identify trends, predictors, and adherence with this STOPP criteria by identifying continued antipsychotic dispensations following a fall-related hospitalization.

Methods

A descriptive cross-sectional cohort study of Nova Scotia Seniors’ Pharmacare Program (NSSPP) beneficiaries ≥ 66 years with at least one antipsychotic dispensation annually from April 1, 2009 to March 31, 2014 was completed. As well, unique beneficiaries with at least one antipsychotic dispensation in the four-year period between April 1, 2009 and March 31, 2013 were linked to fall-related hospitalizations recorded in the Canadian Institute for Health Information Discharge Abstract Database. The relationship of age, sex, fiscal year, days supply and length-of-stay were studied to identify predictors of continued antipsychotic dispensation post-discharge. Descriptive statistics and multivariate logistic analysis were performed. Odds ratios for the association of risk factors and adherence to STOPP criteria were calculated.

Findings

We identified that in each year observed, there were 6% of eligible NSSPP beneficiaries that received at least one antipsychotic dispensation. Approximately 70% of antipsychotic dispensations were for second generation agents, primarily quetiapine and risperidone. Of the unique beneficiaries with at least one antipsychotic dispensation in the four-year period between April 1, 2009 and March 31, 2013 who survived a fall-related hospitalization over 75% were dispensed an antipsychotic in the 100 days following hospital discharge. Logistic regression showed no statistically significant association between potentially inappropriate therapy and potential predictors in multivariate analysis.

Implications

In each year from 2009 to 2014, 6% of Nova Scotia Seniors’ Pharmacare beneficiaries were dispensed at least one antipsychotic prescription. Over 75% of the older adults who received an antipsychotic dispensation in the 100 days prior to a fall-related hospitalization, continued the drug class after discharge. This demonstrates that despite the recommendations of quality indicators such as the STOPP criteria, antipsychotics are continued in individuals at a high risk of falling. Future investigations are needed to inform health team, system, and policy interventions to improve concordance with this antipsychotic specific STOPP criterion when appropriate.

Antipsychotic use in older adults: Canadian best practices

Due to the physiologic changes of aging, managing behavioral issues and antipsychotic use is associated with adverse reactions that are more complex in older adults than in younger adults. Therefore, appropriate prescribing and evaluating the need to continue antipsychotics are necessary to enhance optimum patient outcomes. This article discusses best practice recommendations for NPs in Canada to help ensure safe use of antipsychotic medications in the older adult population.

Antipsychotic prescribing for Alzheimer's disease and related disorders in specialized settings from 2010 to 2014 in France: a repeated cross-sectional study

BACKGROUND

Safety warnings from health authorities are currently intended to limit the use of antipsychotics (APs) in dementia-related conditions to treat neuropsychiatric symptoms, such as disturbing and/or delusional behaviors. The aim of this study is to investigate prevalence, correlates and trends of AP prescribing among people with dementia between 2010 and 2014 in the French population.

METHODS

AP prescribing and associated factors among individuals with AD, mixed dementia and vascular dementia in the French National Alzheimer Database between 2010 and 2014 were analyzed using multivariate generalized estimating equations models (n = 199,549).

RESULTS

In 2014, 7.7% of people with dementia were prescribed an AP. Compared with 2010 there was a 16% increase in AP use. Multivariate analysis showed a linear increase risk of prescription with an adjusted odds ratio (95% confidence interval) of 1.23 (1.17-1.30) in 2014 compared with 2010. Factors associated with AP prescribing were male gender, more severe cognitive decline and living in long-term care facilities. Older age and higher education were protective toward AP prescribing. The type of dementia did not have any influence on AP prescribing.

CONCLUSION

An increase in AP prescribing among individuals with dementia in French specialized settings over the last 5 years occurred despite safety warnings. This phenomenon suggests that alternative solutions for the management of behavioral and psychiatric symptoms in these populations are still urgently needed.

Effects of a geriatric intervention aiming to improve quality care in nursing homes on benzodiazepine use and discontinuation

BACKGROUND

Benzodiazepines and "Z drugs" are often prescribed in residents of nursing homes (NH) despite their well-known deleterious effects. We aimed to investigate if a general intervention on quality of care led to discontinuation of benzodiazepine, and to examine which NH-related factors were associated in change of benzodiazepines use.

METHODS

IQUARE is a quasi-experimental study, investigating the impact of an intervention based on a geriatric education with NH staff on several quality indicators of care (including appropriate prescriptions). All participating NH received an initial and 18-month audit regarding drug prescriptions and other quality of care variables. The analysis included 3973 residents, 2151 subjects (mean age: 84.6 ± 8.5 years; 74.3% women) in the control group and 1822 (mean age: 85.5 ± 8.1 years; 77.4% women) in the intervention group. Outcomes at 18 months were benzodiazepines use, long-acting benzodiazepines use, new-use of benzodiazepines, and discontinuation. The effect of the intervention was investigated using mixed-effect logistic regression models, including NH variables and residents' health status as confounders.

RESULTS

Higher reductions in benzodiazepine use (-2.8% vs. -1.5%) and long-acting benzodiazepine (-3.7% vs. -3.5%) were observed in intervention group, but not statistically significant. None of the structural and organisational NH-related variables predicted either discontinuation or new-use of benzodiazepines; hospitalisations and initial use of meprobamate increased the likelihood of becoming a new-user of benzodiazepines. Multivariate analysis suggested that living in a particular NH could affect benzodiazepines discontinuation.

CONCLUSIONS

A general intervention designed to improve overall NH quality indicators did not succeed in reducing benzodiazepines use. External factors interfered with the intervention. Further studies are needed to examine which NH-related aspects could impact benzodiazepines discontinuation.

Prescription patterns of benzodiazepines in the Lebanese adult population: a cross-sectional study

This study assessed the profile of benzodiazepine (BDZ) users in Lebanon. Adult patients visiting the pharmacies with prescriptions of BDZs were included in the study. Seven hundred and eighty-six current BDZ users were included, of whom 54.2% were females. Twenty-three percent reported being alcohol consumers and were mostly males. The two most commonly used BDZs were alprazolam (34.6%) and bromazepam (33.6%). The indication for use was mainly anxiety (44.4%), insomnia (22.5%), and depression (15.9%). The prescribing physicians were primarily psychiatrists (43.2%), followed by general practitioners (29.7%). Forty percent had been taking the drug for more than a year. Among those using BDZs for at least 1 month, 35.5% increased the dose with time. Thirty-three percent reported having experienced side effects. Eighteen patients (2.3%) reported taking more than one BDZ concomitantly, while 18.3% were taking drugs that should not be prescribed along with BDZs. In conclusion, the use of BDZs is highest among females, especially for the treatment of anxiety. Moreover, continuous use of the drugs for more than a year as well as significant potential drug interactions was identified.

Trends in Psychotropic Dispensing Among Older Adults with Dementia Living in Long-Term Care Facilities: 2004-2013

OBJECTIVE

Guidelines worldwide have cautioned against the use of antipsychotics as first-line agents to treat neuropsychiatric symptoms of dementia. We aimed to investigate the changes over time in the dispensing of antipsychotics and other psychotropics among older adults with dementia living in long-term care facilities.

METHODS

We used drug claims data from Ontario, Canada, to calculate quarterly rates of prescription dispensing of six psychotropic drug classes among all elderly (≥65 years of age) long-term care residents with dementia from January 1, 2004, to March 31, 2013. Psychotropic drugs were classified into the following categories: atypical and conventional antipsychotics, non-sedative and sedative antidepressants, anti-epileptics, and benzodiazepines. We used time-series analysis to assess trends over time.

RESULTS

The study sample increased by 21% over the 10-year study period, from 49,251 patients to 59,785 patients. The majority of patients (within the range of 75%-79%) were dispensed at least one psychotropic medication. At the beginning of the study period atypical antipsychotics (38%) were the most frequently dispensed psychotropic, followed by benzodiazepines (28%), non-sedative antidepressants (27%), sedative antidepressants (17%), anti-epileptics (7%), and conventional antipsychotics (3%). Dispensing of anti-epileptics (2% increase) and conventional antipsychotics (1% decrease) displayed modest changes over time, but we observed more pronounced changes in dispensing of benzodiazepines (11% decrease) and atypical antipsychotics (4% decrease). Concurrently, we observed a substantial growth in the dispensing of both sedative (15% increase) and non-sedative (9% increase) antidepressants. The proportion of patients dispensed two or more psychotropic drug classes increased from 42% in 2004 to 50% in 2013.

CONCLUSIONS

Utilization patterns of psychotropic drugs in institutionalized patients with dementia have changed over the past decade. Although their use declined slightly over the study period, atypical antipsychotics continue to be used at a high rate. A decline in the use of benzodiazepines along with an increased use of sedative and non-sedative antidepressants suggests that the latter class of drugs is being substituted for the former in the management of neuropsychiatric symptoms. Psychotropic polypharmacy continues to be highly prevalent in these patient samples.

Nurse-Led Medicines' Monitoring for Patients with Dementia in Care Homes: A Pragmatic Cohort Stepped Wedge Cluster Randomised Trial

BACKGROUND

People with dementia are susceptible to adverse drug reactions (ADRs). However, they are not always closely monitored for potential problems relating to their medicines: structured nurse-led ADR Profiles have the potential to address this care gap. We aimed to assess the number and nature of clinical problems identified and addressed and changes in prescribing following introduction of nurse-led medicines' monitoring.

DESIGN

Pragmatic cohort stepped-wedge cluster Randomised Controlled Trial (RCT) of structured nurse-led medicines' monitoring versus usual care.

SETTING

Five UK private sector care homes.

PARTICIPANTS

41 service users, taking at least one antipsychotic, antidepressant or anti-epileptic medicine.

INTERVENTION

Nurses completed the West Wales ADR (WWADR) Profile for Mental Health Medicines with each participant according to trial step.

OUTCOMES

Problems addressed and changes in medicines prescribed.

DATA COLLECTION AND ANALYSIS

Information was collected from participants' notes before randomisation and after each of five monthly trial steps. The impact of the Profile on problems found, actions taken and reduction in mental health medicines was explored in multivariate analyses, accounting for data collection step and site.

RESULTS

Five of 10 sites and 43 of 49 service users approached participated. Profile administration increased the number of problems addressed from a mean of 6.02 [SD 2.92] to 9.86 [4.48], effect size 3.84, 95% CI 2.57-4.11, P <0.001. For example, pain was more likely to be treated (adjusted Odds Ratio [aOR] 3.84, 1.78-8.30), and more patients attended dentists and opticians (aOR 52.76 [11.80-235.90] and 5.12 [1.45-18.03] respectively). Profile use was associated with reduction in mental health medicines (aOR 4.45, 1.15-17.22).

CONCLUSION

The WWADR Profile for Mental Health Medicines can improve the quality and safety of care, and warrants further investigation as a strategy to mitigate the known adverse effects of prescribed medicines.

TRIAL REGISTRATION

ISRCTN 48133332.

The Mortality Risk of Conventional Antipsychotics in Elderly Patients: A Systematic Review and Meta-analysis of Randomized Placebo-Controlled Trials

BACKGROUND

Numerous observational studies have reported an increased risk of mortality for conventional antipsychotics in elderly patients, and for haloperidol in particular. Subsequently, health authorities have warned against use of conventional antipsychotics in dementia. Experimental evidence is lacking.

OBJECTIVE

To assess the mortality risk of conventional antipsychotics in elderly patients with a meta-analysis of trials.

METHODS

Original studies were identified in electronic databases, online trial registers, and hand-searched references of published reviews. Two investigators found 28 potentially eligible studies, and they selected 17 randomized placebo-controlled trials in elderly patients with dementia, delirium, or a high risk of delirium. Two investigators independently abstracted trial characteristics and deaths, and 3 investigators assessed the risk of bias. Deaths were pooled with RevMan to obtain risk differences and risk ratios.

RESULTS

Data of 17 trials with a total of 2387 participants were available. Thirty-two deaths occurred. The pooled risk difference of 0.1% was not statistically significant (95% confidence interval (CI) -1.0%-1.2%). The risk ratio was 1.07 (95% CI 0.54-2.13). Eleven of 17 trials tested haloperidol (n = 1799). The risk difference was 0.4% (95% CI -0.9%-1.6%), the risk ratio was 1.25 (95% CI 0.59-2.65).

CONCLUSIONS

This meta-analysis of placebo-controlled randomized trials does not show that conventional antipsychotics in general or haloperidol in particular increase the risk of mortality in elderly patients. It questions the observational findings and the warning based on these findings.

Use of benzodiazepines and related drugs in Manitoba: a population-based study

BACKGROUND

Despite their favourable toxicology profile, benzodiazepines and the related Z-drugs (zopiclone, zolpidem and zaleplon) have been associated with physiological tolerance, dependence and addiction. Evidence of harm (e.g., falls, motor vehicle collisions and cognitive disturbances) has been reported in older populations. The aim of this study was to determine the relation between users' characteristics and the use of benzodiazepines and Z-drugs in Manitoba over a 16-year period.

METHODS

This time-series analysis was based on prescription data from Apr. 1, 1996, to Mar. 31, 2012, obtained from the Drug Product Information Network database of Manitoba. We obtained sociodemographic information on benzodiazepine and Z-drug users from the Population Registry and determined changes in utilization rates over time using generalized estimating equations.

RESULTS

Overall, the prevalence of benzodiazepine use remained stable at about 61.0 per 1000 population between 1996/97 and 2011/12; however, the prevalence of Z-drug use increased steadily from 10.9 to 37.0 per 1000 over the same period. In older people (≥ 65 years), the incidence of benzodiazepine use decreased from 55.5 to 30.3 users per 1000, whereas the incidence of Z-drug use increased from 7.3 to 20.3 users per 1000 over the study period. Among those 18-64 years of age, the incidence of benzodiazepine use decreased from 30.1 to 27.6 users per 1000, but the increase in incidence of Z-drug use was more than 2-fold. The youngest population (≤ 17 years) showed the lowest rates of use of these drugs. The highest rates of use were observed among older women and the low-income population.

INTERPRETATION

Over the study period, benzodiazepines have been prescribed less frequently to older patients in Manitoba; however, zopiclone prescribing has continued to increase for all age groups. The reasons for this increase remain to be determined.