Patient perspectives on the vital primary care role of community pharmacists in Nova Scotia, Canada: qualitative findings from the PUPPY Study.

OBJECTIVES: Community pharmacists play an important role in primary care access and delivery for all patients, including patients with a family physician or nurse practitioner ("attached") and patients without a family physician or nurse practitioner ("unattached"). During the COVID-19 pandemic, community pharmacists were accessible care providers for unattached patients and patients who had difficulty accessing their usual primary care providers ("semi-attached"). Before and during the pandemic, pharmacist services expanded in several Canadian provinces. The aim of this qualitative study was to explore patient experiences receiving care from community pharmacists, and their perspectives on the scope of practice of community pharmacists. METHODS: Fifteen patients in Nova Scotia, Canada, were interviewed. Participant narratives pertaining to pharmacist care were analyzed thematically. KEY FINDINGS: Attached, "semi-attached," and unattached patients valued community pharmacists as a cornerstone of care and sought pharmacists for a variety of health services, including triaging and system navigation. Patients spoke positively about expanding the scope of practice for community pharmacists, and better optimization of pharmacists in primary care. CONCLUSIONS: System decision-makers should consider the positive role community pharmacists can play in achieving primary care across the Quintuple Aim (population health, patient and provider experiences, reducing costs, and supporting equity in health).

An investigation of psychoactive polypharmacy and related gender-differences in older adults with dementia: a retrospective cohort study.

BACKGROUND: Older adults living with dementia may express challenging responsive behaviours. One management strategy is pharmacologic treatment though these options often have limited benefit, which may lead to multiple treatments being prescribed. METHODS: The aim of the present study was to describe psychoactive medication polypharmacy and explore factors associated with psychoactive polypharmacy in a cohort of older adults living with dementia in Nova Scotia, Canada, including a gender-stratified analysis. This was a retrospective cohort study of those aged 65 years or older with a recorded diagnosis of dementia between 2005 and 2015. Medication dispensation data was collected from April 1, 2010, or dementia diagnosis (cohort entry) to either death or March 31, 2015 (cohort exit). Psychoactive medication claims were captured. Psychoactive medication polypharmacy was defined as presence of three or more psychoactive prescription medications dispensed to one subject and overlapping for more than 30 days. Psychoactive polypharmacy episodes were described in duration, quantity, and implicated medications. Regression analysis examined factors associated with experience and frequency of psychoactive polypharmacy. All analysis were stratified by gender. RESULTS: The cohort included 15,819 adults living with dementia (mean age 80.7 years; 70.0% female), with 99.4% (n = 15,728) receiving at least one psychoactive medication over the period of follow-up. Psychoactive polypharmacy was present in 19.3% of the cohort. The gender specific logistic regressions demonstrated that for both men and women a younger age was associated with an increased risk of psychoactive polypharmacy (women: OR 0.97, 95%CI[0.96, 0.98], men: OR 0.96, 95%CI[0.95, 0.97]). Men were less likely to experience psychoactive polypharmacy if their location of residence was urban (OR 0.86, 95%CI[0.74, 0.99]). There was no significant association between location of residence (urban or rural) and psychoactive polypharmacy for women living with dementia. Antidepressants were the most dispensed medication class, while quetiapine was the most dispensed medication. CONCLUSIONS: This study suggests that of adults living with dementia those of younger ages were more likely to experience psychoactive polypharmacy and that men living with dementia in rural locations may benefit from increased access to non-pharmacological options for dementia management.

Environmental scan of current strategies to decrease sedative-hypnotic drug use and promote sleep in hospital patients.

BACKGROUND: Sedative-hypnotic drugs are often initiated in hospital to manage insomnia and anxiety. Guidelines discourage their use, particularly in older adults, due to risks of falls, fractures, and delirium. AIM: To identify publicly available resources to decrease the use of sedative-hypnotic drugs and promote sleep in hospital. METHOD: An advanced Google search with 6 search strategies was conducted. Key websites were also identified and searched. Hospital- or community-based resources using non-pharmacologic measures to reduce sedative-hypnotic drug use and/or to promote sleep were included if they were publicly available in English within the past 5 years. Full text screening and data extraction was performed independently by 2 reviewers; a third reviewer resolved disagreements by consensus. RESULTS: A total of 79 resources met inclusion criteria, with 65 (82.3%) providing education and 31 (39.2%) describing sleep hygiene strategies. Other resources included deprescribing (17, 21.5%), relaxation training (13, 16.5%), cognitive behavioural therapy for insomnia (9, 11.4%), and policies (7, 8.9%). The resources primarily targeted patients (59, 74.7%) followed by healthcare providers (9, 11.4%). There were 9 resources (11.4%) that applied to both community and hospital settings, and another 2 (2.5%) designed specifically for hospital. CONCLUSION: Many resources were available to patients and healthcare providers to reduce inappropriate or ineffective use of sedative-hypnotic drugs and promote better sleep. Specific resources for the hospital setting were infrequent and recommended that clinicians stop hospital-initiated sedatives when patients are discharged. Identified resources can be adapted by healthcare organizations to develop sedative-hypnotic prescribing programs and policies.

A Prescribing Cascade of Proton Pump Inhibitors Following Anticholinergic Medications in Older Adults With Dementia.

Introduction: Prescribing cascade refers to use of a medication to treat a drug-related adverse event. Prescribing cascades increase medication use, cost, and risk of adverse events. Objective: Our objective was to use administrative health data to identify whether use of medications from the anticholinergic cognitive burden scale was associated with proton pump inhibitor (PPI) prescribing consistent with a prescribing cascade in older adults with dementia. Method: The cohort was comprised of Nova Scotia Seniors' Pharmacare beneficiaries identified to have dementia and medication dispensation data recorded between 1 April 2010, or cohort entry and 31 March 2015. Anticholinergic medications from the anticholinergic cognitive burden scale (ACB) were abstracted. A look back period of 365 days identified if a PPI had been dispensed preceding anticholinergic dispensation. PPI initiation within 30, 60, 90, or 180 days of the anticholinergic medication was assessed. Demographic description of those dispensed anticholinergic medications or PPIs were reported. Risk factors for the prescribing cascade were investigated with logistic regression and Cox proportional hazards modelling including a sex-stratified analysis. Results: We identified 28,952 Nova Scotia Seniors' Pharmacare beneficiaries with dementia and prescription dispensation data. Anticholinergic medications were frequently dispensed with 63.4% of the cohort dispensed at least one prescription for an anticholinergic medication. The prescribing cascade defined as up to 180-days between anticholinergic medication inititation and PPI dispensation, occurred in 1,845 Nova Scotia Seniors' Pharmacare beneficiaries with dementia (incidence 6.4%). Multivariate regression showed those experiencing the prescribing cascade after initiating any anticholinergic were younger (OR 0.98, 95%CI [0.97-0.98]), less likely to live in an urban location (OR 0.82, 95%CI [0.74-0.91]), or to be men (OR 0.74, 95%CI [0.67-0.82]). Cox regression demonstrated an increased risk of starting a PPI within 180 days when initiating any medication from the ACB (HR 1.38, 95%CI [1.29-1.58]). Discussion: Regression modelling suggested that anticholinergic medications increased the risk of PPI dispensation consistent with a prescribing cascade in the cohort. The identification of the prescribing cascade in this population of older Nova Scotia Seniors' Pharmacare Program beneficiaries with dementia using administrative health data highlights how routinely collected health data can be used to identify prescribing cascades.

Interventions to reduce benzodiazepine and sedative-hypnotic drug use in acute care hospitals: A scoping review.

BACKGROUND: Benzodiazepines and sedative-hypnotic drugs (BZD/SHD) are commonly utilized in the acute care setting for insomnia and anxiety and are associated with cognitive impairment, falls, and fractures. Interventions to reduce use of BZD/SHD in hospitals are not well characterized. OBJECTIVE: The objective was to conduct a scoping review to identify and characterize interventions to reduce the use of BZD/SHD by adults in the acute care setting. METHODS: English language studies and abstracts that described an intervention to reduce BZD/SHD in adult hospital patients were included. Six databases (PubMed, EMBASE, CINAHL, PsycINFO, Scopus, and Web of Science) were searched up to July 2018 and updated to February 3, 2021. The grey literature (Opengrey, Grey Matters, Google Advanced) was searched up to July 2018. Titles and abstracts were screened and full-text articles were reviewed and charted by three independent reviewers. Stakeholders were consulted to inform the scoping review and collect perspectives on the findings. RESULTS: There were 13,046 records identified and 43 studies included. The most common study designs were uncontrolled before and after (23/43, 53.5%) and randomized controlled trials (7/43, 16.3%). The majority of studies tested a single intervention (32/43, 74.4%) such as education, deprescribing, relaxation training and sleep protocols. Patients were frequently the target of relaxation training and behavior change interventions; while sleep protocols, multifaceted interventions, education and deprescribing were usually directed at healthcare providers, either alone or in combination with patients. Most studies reported positive results in decreasing BZD/SHD use (27/43, 62.8%). CONCLUSIONS: The scoping review found a variety of interventions to decrease the utilization of BZD/SHD in hospitals. Multifaceted interventions aimed at patients and healthcare providers that include a combination of education, sleep protocols, and deprescribing may support reductions in BZD/SHD use. Stakeholders also recommended policy and system changes such as computer alerts due to feasibility and workload.

Potentially Inappropriate Drug Duplication in a Cohort of Older Adults with Dementia.

BACKGROUND: Concurrent use of 2 nonsteroidal anti-inflammatory drugs, selective serotonin reuptake inhibitors, loop diuretics, angiotensin-converting enzyme inhibitors, or anticoagulants is considered potentially inappropriate by Screening Tool of Older Persons' Prescriptions and Screening Tool to Alert to Right Treatment criteria. OBJECTIVE: The objective was to examine drug duplication in a cohort of older adults with dementia. METHODS: Cohort entry for Nova Scotia Seniors' Pharmacare Program beneficiaries was the date an International Classification of Diseases ninth edition or 10th edition code for dementia was recorded in accessed databases between March 1, 2005, and March 31, 2015. Medication dispensation and sociodemographic data were captured from the Nova Scotia Seniors' Pharmacare Program database between April 1, 2010, and March 31, 2015. Duplication was considered when 2 drugs from the same class were dispensed such that the supply in the patient's possession could overlap for more than 30 days. We reported number of cases of duplication and duration of overlap. Sex differences in drug duplication were assessed with bivariate logistic regression. RESULTS: In the cohort of 28,953 Nova Scotia Seniors' Pharmacare Program beneficiaries with dementia, we documented concurrent use in 101 (1.7%) nonsteroidal anti-inflammatory drugs users (mean duration = 75.6 days), 95 (1.0%) selective serotonin reuptake inhibitors users (mean duration = 146.6 days), 5 (0.07%) loop diuretic users (mean duration = 530.6 days), 183 (2.0%) angiotensin-converting enzyme inhibitor users (mean duration = 123.9 days), and 160 (3.5%) anticoagulant users (mean duration = 63.6 days). Nonsteroidal anti-inflammatory drug pairs were most commonly celecoxib with naproxen or diclofenac. Selective serotonin reuptake inhibitors duplication was most commonly sertraline with citalopram. No sex differences in risk for drug duplication were identified. CONCLUSIONS: Drug duplication was identified in a cohort of older adults with dementia and is a feasible target for intervention. (Curr Ther Res Clin Exp. 2021; 82:XXX-XXX).

The role of sex, age and genetic polymorphisms of CYP enzymes on the pharmacokinetics of anticholinergic drugs.

There is evidence that use of drugs with anticholinergic properties increases the risk of cognitive impairment, and increased exposure to these drugs potentiates this risk. Anticholinergic drugs are commonly used even with associated risk of adverse events. Aging, sex, and genetic polymorphisms of cytochrome P450 (CYP) enzymes are associated with alterations in pharmacokinetic processes, which increase drug exposure and may further increase the risk of adverse drug events. Due to the increasing burden of cognitive impairment in our aging population and the future of personalized medicine, the objective of this review was to provide a critical clinical perspective on age, sex, and CYP genetic polymorphisms and their role in the metabolism and exposure to anticholinergic drugs. Age-related changes that may increase anticholinergic drug exposure include pseudocapillarization of liver sinusoidal endothelial cells, an approximate 3.5% decline in CYP content for each decade of life, and a reduction in kidney function. Sex-related differences that may be influenced by anticholinergic drug exposure include women having delayed gastric and colonic emptying, higher gastric pH, reduced catechol-O-methyl transferase activity, reduced glucuronidation, and reduced renal clearance and men having larger stomachs which may affect medication absorption. The overlay of poor metabolism phenotypes for CYP2D6 and CYP2C19 may further modify anticholinergic drug exposure in a significant proportion of the population. These factors help explain findings of clinical trials that show older adults and specifically older women achieve higher plasma concentrations of anticholinergic drugs and that poor metabolizers of CYP2D6 experience increased drug exposure. Despite this knowledge neither age, sex nor CYP phenotype are routinely considered when making decisions about the use or dosing of anticholinergic medications. Future study of anticholinergic medication needs to account for age, sex and CYP polymorphisms so that we may better approach personalized medicine for optimal outcomes and avoidance of medication-related cognitive impairment.

An examination of three prescribing cascades in a cohort of older adults with dementia.

BACKGROUND: Prescribing cascades are a source of inappropriate prescribing for older adults with dementia. We aimed to study three prescribing cascades in older Nova Scotians with dementia using administrative databases. METHODS: Cohort entry for Nova Scotia Seniors' Pharmacare Program beneficiaries was the date of dementia diagnosis. Prescription drug dispensing data was extracted for inciting medication and second treatment (cholinesterase inhibitor and bladder anticholinergic, metoclopramide and Parkinson's disease medication, or calcium channel blocker (CCB) and diuretic) over the six-year period April 1, 2009 to March 31, 2015. In three separate analyses, dispensing an inciting medication signaled a look back of 365 days from the date of first dispensing to confirm that the second treatment was started after the inciting medication. The prescribing cascade was considered when the second treatment was started within 180 days of the inciting treatment. Sex differences in the prescribing cascade were tested using t-tests or chi square tests as appropriate. Both univariate (unadjusted) and multivariate (adjusted) logistic regression (adjusted for age, rurality, and sex) and Cox proportional hazards regression was used to identify risk factors for the prescribing cascade. RESULTS: From March 1, 2005 to March 31, 2015, 28,953 Nova Scotia Seniors' Pharmacare beneficiaries with dementia (NSSPBD) were identified. There were 60 cases of bladder anticholinergics following cholinesterase inhibitors, 11 cases of Parkinson's disease medication following metoclopramide, and 289 cases of a diuretic following CCB in the cohort. Regression analysis demonstrated that risk of bladder anticholinergics following cholinesterase inhibitors and diuretics following CCBs were associated with female sex. Cox regression suggested that bladder anticholinergics were less often used by those on cholinesterase inhibitors and did not identify CCB use as leading more frequently to diuretic use. CONCLUSIONS: The combination of diuretics following CCB was the most common prescribing cascade and bladder anticholinergics following cholinesterase inhibitors the second most common. However, exposure to the inciting medications did not increase risk of exposure to the second treatments. Combinations of bladder anticholinergics following cholinesterase inhibitors and diuretics following CCBs were more common for women raising concern that women may be at increased risk of these prescribing cascades.

CCCDTD5: Reducing the risk of later-life dementia. Evidence informing the Fifth Canadian Consensus Conference on the Diagnosis and Treatment of Dementia (CCCDTD-5).

The Fifth Canadian Consensus Conference on the Diagnosis and Treatment of Dementia (CCCDTD-5) was a year-long process to synthesize the best available evidence on several topics. Our group undertook evaluation of risk reduction, in eight domains: nutrition; physical activity; hearing; sleep; cognitive training and stimulation; social engagement and education; frailty; and medications. Here we describe the rationale for the undertaking and summarize the background evidence-this is also tabulated in the Appendix. We further comment specifically on the relationship between age and dementia, and offer some suggestions for how reducing the risk of dementia in the seventh decade and beyond might be considered if we are to improve prospects for prevention in the near term. We draw to attention that a well-specified model of success in dementia prevention need not equate to the elimination of cognitive impairment in late life.

Point Prevalence Survey of Benzodiazepine and Sedative-Hypnotic Drug Use in Hospitalized Adult Patients.

BACKGROUND: Benzodiazepines and sedative-hypnotic drugs (BZD/SHDs), such as zopiclone and the antidepressant trazodone, pose risks such as falls, fractures, and confusion, especially for older adults. Use of these drugs in the acute care setting is poorly understood. OBJECTIVES: To determine the point prevalence and characteristics of use of BZD/SHDs in hospitals in Nova Scotia, Canada. METHODS: A point prevalence survey was conducted for adults admitted to all hospitals with at least 30 acute care beds between May and August 2016. Drugs administered intravenously, patients in long-term care, and patients receiving mental health services, addiction treatment, or critical care were excluded. The proportion of included patients who had received a BZD/SHD within the 24 h before the start of the survey was determined. A descriptive statistical analysis was performed. RESULTS: Overall BZD/SHD prevalence was 34.6% (487/1409) across the 16 eligible hospitals. The average age was 70.3 years, and 150 (30.8%) of the patients were 80 years or older. Among the 585 prescriptions for these patients, commonly used drugs were zopiclone (32.0%), lorazepam (21.9%), and trazodone (21.9%). The most common indications for use were bedtime/daytime sedation (60.0%) and anxiety (12.5%). More than half of the prescriptions (55.7%) had been initiated at home, 37.6% were started in hospital, and the place of initiation was unknown for 6.7%. Benzodiazepines were prescribed more frequently to patients under 65 years than those 80 years or older (41.3% versus 22.2%, p < 0.001) whereas trazodone was more frequently prescribed to the older of these 2 age groups (52.7% versus 14.3%, p < 0.001). CONCLUSIONS: BZD/SHDs were frequently used by hospitalized adult patients in Nova Scotia. Trazodone appears to have been substituted for benzodiazepines in the oldest age group. Pharmacists should direct their efforts toward preventing inappropriate initiation of BZD/SHDs in hospital, particularly for elderly patients.

CONTEXTE: Les benzodiazépines et les médicaments sédatifs-hypnotiques (BZD/MSH), comme la zopiclone et l'antidépresseur trazodone, comportent des risques de chute, de fracture et de confusion, particulièrement chez les personnes âgées. Il existe une mauvaise compréhension de l'utilisation de ces médicaments dans un contexte de soins intensifs. OBJECTIFS: Déterminer la prévalence ponctuelle et les caractéristiques de l'utilisation des BZD/MSH dans des hôpitaux en Nouvelle-Écosse, au Canada. MÉTHODES: Une enquête sur la prévalence ponctuelle a été menée entre mai et août 2016 auprès d'adultes admis dans les hôpitaux comptant au moins 30 lits en soins intensifs. Les patients recevant ces médicaments par voie intraveineuse, ceux en établissement de soins de longue durée, ceux recevant des services en santé mentale ou un traitement pour la toxicomanie ou encore ceux des soins intensifs ont été exclus de l'enquête. La détermination de la proportion des patients inclus dans l'étude portait sur ceux qui avaient reçu des BZD/MSH au cours des 24 h précédant le début de l'enquête, et elle a été suivie d'une analyse statistique descriptive. RÉSULTATS: e manière générale, l'usage des BZD/MSH s'élevait à 34,6 % (487/1409) dans les 16 hôpitaux participants. L'âge moyen des patients était de 70,3 ans et 150 (30,8 %) étaient âgés d'au moins 80 ans. Parmi les 585 prescriptions pour ces patients, les médicaments communément utilisés étaient la zopiclone (32,0 %), le lorazepam (21,9 %) et le trazodone (21,9 %). Les indications d'utilisation les plus répandues concernaient la sédation au coucher et en cours de journée (60 %) et l'anxiété (12,5 %). Plus de la moitié des prescriptions (55,7 %) ont commencé à domicile, 37,6 % ont commencé à l'hôpital, et le lieu du début de la prise de ces médicaments était inconnu dans 6,7 % des cas. La prescription des benzodiazépines s'adressait plus souvent aux patients de moins de 65 ans qu'à ceux d'au moins 80 ans (41,3 % par rapport à 22,2 %, p < 0,001), tandis que la prescription de trazodone s'adressait plus souvent aux personnes de la tranche d'âge plus avancée (52,7 % par rapport à 14,3 %, p < 0,001). CONCLUSIONS: Les BZD/MSH étaient fréquemment utilisés par les patients adultes hospitalisés en Nouvelle-Écosse. La trazodone semble avoir remplacé les benzodiazépines dans le groupe plus âgé. Les pharmaciens devraient orienter leurs efforts sur la prévention de la prise inappropriée des BZD/MSH en hôpital, particulièrement par les patients plus âgés.

Evaluation of the experiences and needs of users of a drug information resources website.

OBJECTIVE: This article describes the evaluation of the experiences and needs of users of the Drug Information Resources (DIR) website. The DIR website attracts traffic and use from around the world, with the highest number of users in Canada and the United States. METHODS: An online questionnaire was developed through use of a literature review and Google Analytics data. Face validity testing and test-retest reliability were completed prior to releasing the questionnaire. RESULTS: Although the Google Analytics data showed that the site is used internationally, most respondents were Canadian students. They used the site for academic and clinical purposes and reported it was easy to use, was well organized, and included required resources, and they would recommend it to others. CONCLUSION: The DIR website was found to be a valuable resource for educational and clinical use. Future studies will aim to obtain input from international users.

Medication-related criteria in frailty assessment tools: A narrative review.

OBJECTIVE: To review medication-related criteria within validated frailty tools. METHODS: Narrative review of validated frailty assessment tools. Frailty tools were identified from recently published reviews; each tool was reviewed to determine whether any medication-related criteria were included and how these criteria contributed to the scoring/assessment of frailty. RESULTS: Eight out of 16 validated frailty tools included medication-related criteria. The majority of criteria were a numerical cut-off of number of medications taken; however, the specific cut-off was not consistent. CONCLUSION: Inclusion of medication-related criteria in frailty tools is highly variable. Future research is required to determine whether incorporation of medication use into frailty assessment can impact outcomes in terms of frailty prevention and treatment.