Potentially inappropriate anticholinergic medication use in older adults with dementia

The Prevalence of Prescribing Inappropriate Medications Among Older Adults in Saudi Arabia with Dementia Based on Beers Criteria: A Retrospective Study

Background

Dementia is a common neurogenerative disease among older adults. Therefore, they are more prone to potentially inappropriate medication (PIM), which is medication that causes more harm rather than protecting the health of an individual. Hence, the American Geriatrics Society (AGS) has recognized the risk of certain medication classes on this population and released PIM according to Beers criteria, which is a helpful guide for clinicians to ensure the safety of medication before it is prescribed. The aim of this study is to assess the prevalence of PIM use among older adults with dementia as a risk factor in comparison to other older adults without dementia.

Methods

A retrospective study was conducted in an outpatient setting in a tertiary hospital targeting elderly patients aged 65 years old or over from January 2020 to September 2022. A total of 598 patients were screened, and 270 patients met the inclusion criteria. The eligible patients were then divided into two groups: 168 were in a non-dementia group and 102 were in a dementia group.

Results

PIM use was reported in patients with and without dementia. The most inappropriate medication that was prescribed comprised atypical antipsychotics PIM for both patients with and without dementia. However, the prevalence was higher in the dementia group for quetiapine (75% vs 24% respectively), olanzapine (82% vs 17% respectively) or risperidone (92% vs 7%, respectively). Anticholinergics were highly prescribed in older adult without dementia as compared to dementia patient and was statistically significant for solifenacin (96% vs.3.6% respectively) and amitriptyline (88% vs 11% respectively).

Conclusion

Among elderly patients in outpatient care settings, the prevalence of PIM use is considered high in dementia patients for antipsychotics, while a higher use of benzodiazepine and anticholinergics was found in non-dementia patients.

Cumulative Anticholinergic Burden and its Predictors among Older Adults with Alzheimer's Disease Initiating Cholinesterase Inhibitors

BACKGROUND

Cumulative anticholinergic burden refers to the cumulative effect of multiple medications with anticholinergic properties. However, concomitant use of cholinesterase inhibitors (ChEIs) and anticholinergic burden can nullify the benefit of the treatment and worsen Alzheimer's disease (AD). A literature gap exists regarding the extent of the cumulative anticholinergic burden and associated risk factors in AD. Therefore, this study evaluated the prevalence and predictors of cumulative anticholinergic burden among patients with AD initiating ChEIs.

METHODS

A retrospective longitudinal cohort study was conducted using the Medicare claims data involving parts A, B, and D from 2013 to 2017. The study sample included older adults (65 years and older) diagnosed with AD and initiating ChEIs (donepezil, rivastigmine, or galantamine). The cumulative anticholinergic burden was calculated based on the Anticholinergic Cognitive Burden scale and patient-specific dosing using the defined daily dose over the 1 year follow-up period after ChEI initiation. Incremental anticholinergic burden levels were dichotomized into moderate-high (sum of standardized daily anticholinergic exposure over a year (TSDD) score ≥ 90) versus low-no (score 0-89). The Andersen Behavioral Model was used as the conceptual framework for selecting the predictors under the predisposing, enabling, and need categories. A multivariable logistic regression model was used to evaluate the predictors of high-moderate versus low-no cumulative anticholinergic burden. A multinomial logistic regression model was also used to determine the factors associated with patients having moderate and high burdens compared to low/no burdens.

RESULTS

The study included 222,064 older adults with AD with incident ChEI use (mean age 82.24 ± 7.29, 68.9% females, 83.6% White). Overall, 80.48% had some anticholinergic burden during the follow-up, with 36.26% patients with moderate (TSDD scores 90-499), followed by 24.76% high (TSDD score > 500), and 19.46% with low (TSDD score 1-89) burden categories. Predisposing factors such as age; African American, Asian, or Hispanic race; and need factors included comorbidities such as dyslipidemia, syncope, delirium, fracture, pneumonia, epilepsy, and claims-based frailty index were less likely to be associated with the moderate-high anticholinergic burden. The factors that increased the odds of moderate-high burden were predisposing factors such as female sex; enabling factors such as dual eligibility and diagnosis year; and need factors such as baseline burden, behavioral and psychological symptoms of dementia, depression, insomnia, urinary incontinence, irritable bowel syndrome, anxiety, muscle spasm, gastroesophageal reflux disease, heart failure, and dysrhythmia. Most of these findings remained consistent with multinomial logistic regression.  CONCLUSION: Four out of five older adults with AD had some level of anticholinergic burden, with over 60% having moderate-high anticholinergic burden. Several predisposing, enabling, and need factors were associated with the cumulative anticholinergic burden. The study findings suggest a critical need to minimize the cumulative anticholinergic burden to improve AD care.

Comparing AGS Beers 2019, STOPP version 2, and EU(7)-PIM list in Portuguese older adults in primary health care

PURPOSE

This study aims to identify PIM prevalence in older adults according to the 2019 Beers criteria, Screening Tool of Older Person's Prescriptions version 2 (STOPP v2) criteria, and the Portuguese EU(7)-PIM list and also to analyze the concordance between these criteria.

METHODS

A retrospective study was conducted among 1200 Portuguese older adults (≥ 65 years old), users of primary health care. Demographic, clinical, and pharmacological data were collected concerning the period between April 2021 and August 2022. A comparative analysis was performed between the three PIM identification criteria, and the concordance was determined according to the Lin concordance correlation coefficient.

RESULTS

The mean age was 76.3 (SD 7.7) years old and 57.6% of the older adults were females. Our findings indicate varying prevalence rates among these criteria with 63.8% (95% CI 61.0-66.6%), 66.8% (95% CI 64.1-69.5%), and 50.1% (95% CI 47.2-53.0%) of the older adults take at least one PIM according to the EU(7)-PIM list, Beers 2019, and STOPP v2 criteria, respectively. The highest prevalence observed was for proton pump inhibitors according to EU(7)-PIM list (30.1%, 95% CI 27.6-32.9) and Beers criteria (30.1%, 95% CI 27.6-32.9) and alprazolam according to STOPP v2 criteria (10.1%, 95% CI 8.4-11.9%). A poor concordance between criteria was observed (< 0.834). The highest concordance coefficient was found between the EU(7)-PIM list and the Beers criteria (0.833), and the lowest between the EU(7)-PIM list and STOPP criteria (0.735).

CONCLUSION

This study reveals varying prevalence rates of PIM in older adults, as assessed by different criteria, and highlights the need for targeted interventions and improved prescribing practices. In the future, studies should focus on the occurrence of negative outcomes in older adults associated with PIM consumption.

Hospitalization and emergency department visits associated with potentially inappropriate medication in older adults: self-controlled case series analysis

Introduction

Potentially inappropriate medications (PIM) and resulting adverse health outcomes in older adults are a common occurrence. However, PIM prescriptions are still frequent for vulnerable older adults. Here, we sought to estimate the risk of hospitalization and emergency department (ED) visits associated with PIM prescriptions over different exposure periods and PIM drug categories.

Methods

We used the National Health Insurance Service-Elderly Cohort Database (NHIS-ECDB) to construct the cohort and implemented a Self-Controlled Case Series (SCCS) method. Hospitalization or ED visits during the exposure and post-exposure periods were compared to those during the non-exposure period, and six PIM drug categories were evaluated. A conditional Poisson regression model was applied, and the risk of outcomes was presented as the incidence rate ratio (IRR). All potential time-varying covariates were adjusted by year. A total of 43,942 older adults aged ≥65 y who had at least one PIM prescription and the events of either hospitalization or ED visits between Jan 2016 and Dec 2019 were selected..

Results

Mean days of each exposure period was 46 d (±123); risk was highest in exposure1 (1-7 d, 37.8%), whereas it was similar during exposure2 (15-28 d), and exposure3 (29-56 d) (16.6%). The mean number of total PIM drugs administered during the study period was 7.34 (±4.60). Both hospitalization and ED visits were significantly higher in both exposure (adjusted IRR 2.14, 95% Confidence Interval (CI):2.11-2.17) and post-exposure periods (adjusted IRR 1.41, 95% CI:1.38-1.44) in comparison to non-exposure period. The risk of adverse health outcomes was highest during the first exposure period (1-14 d), but decreased gradually over time. Among the PIM categories, pain medication was used the most, followed by anticholinergics. All PIM categories significantly increased the risk of hospitalization and ED visits, ranging from 1.18 (other PIM) to 2.85 (pain medication). Sensitivity analyses using the first incidence of PIM exposure demonstrated similar results. All PIM categories significantly increased the risk of hospitalization and ED visits, with the initial period of PIM prescriptions showing the highest risk. In subgroup analysis stratified by the number of medications, PIM effects on the risk of hospitalization and ED visits remained significant but gradually attenuated by the increased number of medications.

Discussion

Therefore, the development of deprescribing strategies to control PIM and polypharmacy collectively is urgent and essential.

Potentially Inappropriate Medication Use in Community-Dwelling Older Adults Living with Dementia

Background: The Beers Criteria identifies potentially inappropriate medications (PIMs) that should be avoided in older adults living with dementia. Objective: The aim of this study was to provide estimates of the prevalence and persistence of PIM use among community-dwelling older adults living with dementia in 2011-2017. Methods: Medicare claims data were used to create an analytic dataset spanning from 2011 to 2017. The analysis included community-dwelling Medicare fee-for-service beneficiaries aged 65 and older who were enrolled in Medicare Part D plans, had diagnosis for dementia, and were alive for at least one calendar year. Dementia status was determined using Medicare Chronic Conditions Date Warehouse (CCW) Chronic Condition categories and Charlson Comorbidity Index. PIM use was defined as 2 or more prescription fills with at least 90 days of total days-supply in a calendar year. Descriptive statistics were used to report the prevalence and persistence of PIM use. Results: Of 1.6 million person-year observations included in the sample, 32.7% used one or more PIMs during a calendar year in 2011-2017. Breakdown by drug classes showed that 14.9% of the sample used anticholinergics, 14.0% used benzodiazepines, and 11.0% used antipsychotics. Conditional on any use, mean annual days-supply for all PIMs was 270.6 days (SD = 102.7). The mean annual days-supply for antipsychotic use was 302.7 days (SD = 131.2). Conclusion: Significant proportion of community-dwelling older adults with dementia used one or more PIMs, often for extended periods of time. The antipsychotic use in the community-dwelling older adults with dementia remains as a significant problem.

Prevalence and Factors that Influence Potentially Inappropriate Medication Use among Thai Elderly in Primary Care Settings

Background

Older age increases the likelihood of chronic diseases and polypharmacy with the likelihood of potentially inappropriate medications (PIMs) in secondary and tertiary care levels, but in the primary care settings of Thailand there still is a need for more evidence. This study aimed to examine the prevalence of PIM in primary care settings, and to identify factors that influence the use of PIM.

Methods

A cross-sectional retrospective study was conducted in 2017. Eight primary care units from four regions of Thailand were randomly selected. People aged ≥ 60 years in the eight units were studied as participants. The List of Risk Drugs for Thai Elderly (LRDTE) was used as the reference. Multivariate logistic regression was carried out to identify factors that influence.

Results

A total of 4,848 patients aged ≥60 years with 20,671 prescriptions were studied. The mean age was 70.7±8.3 years for males, and 61.2% for females. A little more than 5% (5.1%) had ≥ 3 chronic diseases and 15.0% received polypharmacy (≥5 medications). The prevalence of prescriptions with PIMs was 65.9%. The most frequent PIMs were antidepressants: amitriptyline (28.1%), antihistamines: dimenhydrinate (22.4%) and chlorpheniramine maleate (CPM) (11.2%); and Benzodiazepines: lorazepam (6.5%). Three factors that significantly influenced prescribing of PIMs were polypharmacy (adjusted OR 3.51; 95% CI 2.81-4.32), having ≥3 chronic diseases (adjusted OR 1.44; 95% CI 1.04-2.01), and age ≥75 years (adjusted OR 1.18; 95% CI 1.01-1.38).

Conclusion

More than two-thirds of elderly Thai patients in the primary care settings were prescribed PIMs. Multidisciplinary prescription review and PIM screening in patients aged ≥75 years who have ≥3 chronic diseases or polypharmacy should be implemented in primary care and supportive computerized PIMs alert system is needed.

The Effectiveness in Activating M-Type K+ Current Produced by Solifenacin ([(3R)-1-azabicyclo[2.2.2]octan-3-yl] (1S)-1-phenyl-3,4-dihydro-1H-isoquinoline-2-carboxylate): Independent of Its Antimuscarinic Action

Solifenacin (Vesicare®, SOL), known to be a member of isoquinolines, is a muscarinic antagonist that has anticholinergic effect, and it has been beneficial in treating urinary incontinence and neurogenic detrusor overactivity. However, the information regarding the effects of SOL on membrane ionic currents is largely uncertain, despite its clinically wide use in patients with those disorders. In this study, the whole-cell current recordings revealed that upon membrane depolarization in pituitary GH3 cells, the exposure to SOL concentration-dependently increased the amplitude of M-type K+ current (IK(M)) with effective EC50 value of 0.34 μM. The activation time constant of IK(M) was concurrently shortened in the SOL presence, hence yielding the KD value of 0.55 μM based on minimal reaction scheme. As cells were exposed to SOL, the steady-state activation curve of IK(M) was shifted along the voltage axis to the left with no change in the gating charge of the current. Upon an isosceles-triangular ramp pulse, the hysteretic area of IK(M) was increased by adding SOL. As cells were continually exposed to SOL, further application of acetylcholine (1 μM) failed to modify SOL-stimulated IK(M); however, subsequent addition of thyrotropin releasing hormone (TRH, 1 μM) was able to counteract SOL-induced increase in IK(M) amplitude. In cell-attached single-channel current recordings, bath addition of SOL led to an increase in the activity of M-type K+ (KM) channels with no change in the single channel conductance; the mean open time of the channel became lengthened. In whole-cell current-clamp recordings, the SOL application reduced the firing of action potentials (APs) in GH3 cells; however, either subsequent addition of TRH or linopirdine was able to reverse SOL-mediated decrease in AP firing. In hippocampal mHippoE-14 neurons, the IK(M) was also stimulated by adding SOL. Altogether, findings from this study disclosed for the first time the effectiveness of SOL in interacting with KM channels and hence in stimulating IK(M) in electrically excitable cells, and this noticeable action appears to be independent of its antagonistic activity on the canonical binding to muscarinic receptors expressed in GH3 or mHippoE-14 cells.

Antimuscarinic use among older adults with dementia and overactive bladder: a Medicare beneficiaries study

OBJECTIVES

This study examined the incidence and predictors of antimuscarinic medication use including non-selective antimuscarinics among older adults with dementia and overactive bladder (OAB).

METHODS

The study used a new-user cohort design involving older adults (≥65 years) with dementia and OAB based on 2013-2015 Medicare data. Antimuscarinics included non-selective (oxybutynin, tolterodine, trospium, fesoterodine) and selective (solifenacin, darifenacin) medications. Descriptive statistics and multivariable logistic regression models were used to determine the incidence and predictors of new antimuscarinic use including non-selective antimuscarinics, respectively.

RESULTS

Of the 3.38 million Medicare beneficiaries with dementia, over one million (1.05) had OAB (31.03%). Of those, 287,612 (27.39%) were reported as prevalent antimuscarinics users. After applying continuous eligibility criteria, 21,848 (10.34%) incident antimuscarinic users were identified (77.6% non-selective; 22.4% selective). Most frequently reported antimuscarinics were oxybutynin (56.3%) and solifenacin (21.4%). Multivariable analysis revealed that patients ≥75 years, of black race, and those with schizophrenia, epilepsy, delirium, and Elixhauser's score were less likely to initiate antimuscarinics. Women, those with abnormal involuntary movements, bipolar disorder, gastroesophageal reflux disease, insomnia, irritable bowel syndrome, muscle spasm/low back pain, neuropathic pain, benign prostatic hyperplasia, falls/fractures, myasthenia gravis, narrow-angle glaucoma, Parkinson's disease, syncope, urinary tract infection and vulvovaginitis were more likely to initiate antimuscarinics. Further, patients with muscle spasms/low back pain, benign prostatic hyperplasia and those taking higher level anticholinergics had lower odds of receiving non-selective antimuscarinics, whereas white patients, black patients and those with schizophrenia and delirium were more likely to receive them.

CONCLUSIONS

Nearly one-third of dementia patients had OAB and over one-fourth of them used antimuscarinics. Majority of the incident users were prescribed non-selective antimuscarinics with several demographic and clinical factors contributing to their use. Given the high prevalence of OAB among dementia patients, there is a need to optimize their antimuscarinic use, considering their vulnerability for anticholinergic adverse effects.

Potentially Inappropriate Medication Use in Older Adults with Alzheimer's Disease and Related Dementias Living in the Community: A Cross-Sectional Analysis

BACKGROUND

With the older adult population in the USA increasing, so is the population of those with Alzheimer's disease and related dementias (ADRD). Older adults are vulnerable to the effects of potentially inappropriate medications as established by the Beers Criteria; however, some medications continue to be prescribed against recommendations.

OBJECTIVES

Our objectives were to describe potentially inappropriate medication (PIM) use linked to cognitive impairment or decline (referred to as Cog-PIM) in older adults with and without ADRD and to investigate whether the odds of Cog-PIM report differ by ADRD status in ambulatory care (i.e., outpatient care) in the USA.

METHODS

A cross-sectional analysis was performed using a nationally representative sample of non-perioperative, office-based ambulatory care visits by adults aged ≥ 65 years in 2016 (n = 218,182,131). Data were collected from the National Ambulatory Medical Care Survey. Cog-PIMs were identified as defined in the 2015 Beers Criteria recommendations for medications that may be potentially inappropriate in older adults with cognitive impairment or dementia. ADRD status was determined by clinician report using free text, the ADRD flag, or the presence of a diagnosis code indicating dementia. Multivariable logistic regressions were used to estimate the odds of Cog-PIM use overall and by medication class.

RESULTS

In 2016, 2.1% (n = 4,651,563) of outpatient visits were made by older adults with ADRD, 33.2% of which reported at least one Cog-PIM. Anticholinergic Cog-PIMs were noted in 20.5% of ADRD visits compared with 8.1% of non-ADRD visits. Antipsychotic PIMs were noted in 15.5% of ADRD visits compared with 0.8% of non-ADRD visits. Benzodiazepine and non-benzodiazepine receptor agonist hypnotic (Z drug) Cog-PIMs were reported in 10.9% of ADRD visits and 10.7% of non-ADRD visits. ADRD status was a significant predictor of Cog-PIM report overall (adjusted odds ratio [aOR] 2.74 [95% confidence interval {CI} 1.20-6.27]) and for anticholinergics and antipsychotics specifically (aOR 3.35 [95% CI 1.24-9.03] and aOR 22.80 [95% CI 5.80-89.50], respectively).

CONCLUSION

This study demonstrated a high prevalence of Cog-PIM use and increased odds of Cog-PIM use in older adults with ADRD. Future work should investigate opportunities in the ambulatory care setting for safer prescribing and de-escalation of Cog-PIMs.

Antimuscarinic Discontinuation in Patients with Overactive Bladder in Nursing Homes: A Retrospective Study of Medicare Beneficiaries

Introduction

Although antimuscarinics form the first-line therapy in overactive bladder (OAB), little is known regarding antimuscarinic discontinuation among OAB patients in nursing homes. This study examined treatment patterns and predictors of antimuscarinic discontinuation among long-term nursing home (LTNH) residents with OAB.

Methods

The study cohort included LTNH residents (defined as residents staying ≥ 101 consecutive days) from the Minimum Data Set linked 2013–2015 Medicare claims data. Patients with OAB were defined by OAB-related claims and medication codes. Treatment patterns and discontinuation (medication gap ≥ 30 days) were characterized by examining OAB-specific antimuscarinics prescribed during LTNH stays. The Andersen Behavioral Model was used to identify predisposing, enabling and need factors that predict discontinuation. Kaplan-Meier curves and multivariable Cox proportional hazards regression model were used to assess the unadjusted and adjusted times to discontinuation, respectively, among different antimuscarinics.

Results

The mean age of the study cohort (n = 11,012) was 81.6 years (± 8.5), 74.6% were female, and 89.8% were non-Hispanic White. The mean duration of nursing home stay was 530.1 (± 268.4) days. The most commonly prescribed OAB-specific antimuscarinic was oxybutynin (69.8%). Overall, 66.5% of the study cohort discontinued the index antimuscarinic. Multivariable Cox PH regression analysis revealed that compared to LTNH residents who initiated treatment with oxybutynin, treatment discontinuation was lower with solifenacin or fesoterodin and discontinuation was more frequent when treatment was initiated with tolterodine, darifenacin or trospium compared with oxybutynin. In addition, several need factors (comorbidities, medication use and anticholinergic burden, etc.) were associated with antimuscarinic discontinuation.

Conclusion

About  two-thirds of LTNH residents with OAB discontinued their index antimuscarinic during their nursing home stay. There was significant variation in discontinuation based on the index antimuscarinic agent with lowest risk of discontiuation with solifenacin and fesoterodin. Concerted efforts to optimize antimuscarinic use are needed to improve the management of OAB in nursing homes.

Electronic Supplementary Material

The online version of this article (10.1007/s12325-020-01412-z) contains supplementary material, which is available to authorized users.

Marginal Health Care Expenditure Burden Among U.S. Civilian Noninstitutionalized Individuals with Multiple Sclerosis: 2010-2015

BACKGROUND

Multiple sclerosis (MS) is a chronic neuroinflammatory disorder with significant health care burden. However, little is known about health care expenditures since the introduction of oral agents for MS after 2010.

OBJECTIVE

To analyze health care expenditures in individuals with MS using Medical Expenditure Panel Survey (MEPS) data from 2010-2015.

METHODS

This retrospective cross-sectional study included adults (≥ 18 years) with MS (Clinical Classification Code 080) and those without MS based on the 2010-2015 full year consolidated MEPS Household Component and Medical Provider Component data files. Descriptive weighted analyses were performed to compare health care expenditures between individuals with MS and without MS. The 2-part model involving probit and generalized linear models was used to estimate the marginal increase in total health care expenditures for MS patients.

RESULTS

There were 0.61 million patients (95% CI = 0.50-0.72) diagnosed with MS annually, accounting for a prevalence of 0.25%. The 2-part model revealed that the marginal total health care expenditures in patients diagnosed with MS were $20,103.49 (95% CI = $14,516.24-$25,690.73) more compared with those without MS. Further, the mean adjusted prescription medication expenditures for the MS group were $13,092.16 (95% CI = $9,452.20-$16,732.12) higher than the non-MS group and accounted for 65.12% of total health care expenditures in MS.

CONCLUSIONS

MS is an expensive neuroinflammatory disease with a majority of the burden attributable to prescription medications. High prescription expenditure burden can be a barrier to optimal patient care in MS.

DISCLOSURES

No funding was received for this study. Hutton reports grants from Adamas, Biogen, EMD Serono, Genzyme, Hoffman-LaRoche, MedImmune, Mallinckrodt, and Novartis and fees from Biogen, Celgene, Genzyme, Genentech, and Novartis, outside the submitted work. Aparasu reports grants from Novartis, Incyte, and Astellas, outside the submitted work. Earla and Thornton have nothing to disclose. Part of the study findings was presented at the International Society for Pharmacoeconomics and Outcomes Research (ISPOR) 2019 National Conference; May 18-22, 2019; New Orleans, LA.

Impact of Automated Targeted Medication Review Electronic Alerts to Reduce Potentially Inappropriate Medication Prescribing Among Medicare Enrolled Patients With Dementia

BACKGROUND

Background:Finding ways to reduce prescribing of potentially inappropriate medications (PIMs) among patients with dementia is necessary.

OBJECTIVES

To evaluate an automated targeted medication review (TMR) service to reduce PIM prescribing among patients with dementia.

METHODS

This was a retrospective observational analysis of patients in a Medication Therapy Management (MTM) program for year 2017. Patients included if Medicare enrolled, MTM eligible, had dementia, and with PIM prescribing. Descriptive statistics described reduced PIM prescribing. Odds ratios (ORs) assessed prescriber relationship with PIM prescribing. Regression evaluated relationship between patient characteristics and discontinued PIMs.

RESULTS

A total of 33 696 TMRs were triggered for 17 933 patients. Four months later, 11 608 TMRs led to a discontinued PIM among 8002 patients. Medications with the largest discontinuations were antihistamines (56%), muscle relaxants (53%), antiemetics (53%), and typical antipsychotics (40%). Physician primary care providers (PCPs) were more likely than nonphysician PCPs (OR = 4.54; 95% CI = 4.15-4.97; P < 0.001), psychiatrists (OR = 1.64; 95%CI = 1.44-1.86; P < 0.001), and neurologists (OR = 4.48; 95% CI = 4.07-4.93; P < 0.001) to prescribe medications to treat dementia and PIMs. Regression showed that younger age, female gender, higher poverty level, and a greater number of pharmacies, medications, and prescribers were associated with discontinued PIMs. Conclusions and Relevance: TMRs were effective in reducing PIM prescribing. Younger patients, individuals living in higher poverty levels, and patients with multiple prescribers or pharmacies may benefit most from this service. TMRs in primary care offices may reduce PIM prescribing.

One-Year Evaluation of a Targeted Medication Therapy Management Intervention for Older Adults

BACKGROUND

Older adults are especially susceptible to adverse effects of inappropriate medication therapy, and anticholinergic medications are common culprits for cognitive dysfunction due to their action on the central nervous system. Medication therapy management (MTM) interventions can aid in deprescribing and reducing inappropriate medication use in older adults. However, there is sparse literature on the long-term sustainability of these interventions.

OBJECTIVES

To (a) investigate whether the deprescribing of anticholinergic medications during an 8-week randomized controlled trial (RCT) of a targeted MTM intervention is sustained at 1-year postintervention follow-up and (b) compare anticholinergic utilization trends in the study population with a large sample of similar individuals not exposed to the intervention.

METHODS

Participants in the targeted MTM (tMTM) RCT had normal cognition or mild cognitive impairment and were recruited from enrollees in a longitudinal study at the University of Kentucky Alzheimer's Disease Center (ADC) and thus have pertinent medical information gathered approximately annually. In this posttrial observational follow-up, sustainability of the anticholinergic deprescribing intervention was assessed in participants in the RCT, and anticholinergic medication use trends were described from the RCT baseline (which occurred immediately following an ADC visit) to the next annual visit in all participants. Mean change in anticholinergic burden from RCT baseline to the next annual visit was estimated using analysis of covariance, and participants were compared with 2 external samples. Anticholinergic burden was measured using the Anticholinergic Drug Scale (ADS). The odds of decreasing baseline anticholinergic burden and number of total and strong anticholinergic medications at the follow-up study time point was assessed using logistic regression.

RESULTS

Of the deprescribing changes made during the initial RCT, 50% were sustained after 1 year. Participants in the tMTM trial reported decreases in the use of anticholinergic antihistamines and bladder agents (-6.5 and -4.4%, respectively), but there was no change in the use of anticholinergic agents targeted at the central nervous system. While the anticholinergic burden of RCT participants decreased over 1 year (adjusted mean ADS change [95% CI] = -0.33 [-0.72, 0.07]), it was not different than the change observed in 2 external samples at the trial center (-0.20 [-0.42, 0.02]) and nationally (-0.33 [-0.39, -0.26]). There were no statistically significant differences between trial participants and external samples in the odds of decreasing anticholinergic burden nor in decreasing the number of total, or strongly anticholinergic, medications at the 1-year follow-up.

CONCLUSIONS

This study demonstrates that the sustainability of deprescribing is limited to the period of intervention, rather than affording lasting effects even over periods as short as 1 year, which was demonstrated not only in the small group of RCT participants but also by comparison with external groups. Future work should extend the duration of intervention and follow-up periods for MTM interventions to allow further insights regarding the sustainability of deprescribing efforts in older adults.

DISCLOSURES

The original trial was supported by a pilot study award from the University of Kentucky Center for Clinical and Translational Sciences (UL1TR000117). Additional support for this study was provided by the National Institutes of Health/National Institute on Aging (R01 AG054130). Jicha reports contract research for Esai, Biohaven, Alltech, Suven, Novartis, and Lilly. The other authors have nothing to disclose.

Patterns of Potentially Inappropriate Bladder Antimuscarinic Use in People with Dementia: A Retrospective Cohort Study

Background

Emergency department (ED) visits or hospitalizations should prompt review of the patient’s medications after discharge and targeted deprescribing to reduce ongoing risks.

Objective

To see if this is happening, we sought to examine the proportion of serious falls and delirium that were followed by a prescription fill for a bladder antimuscarinic. Our secondary objective was to identify concurrent use of other anticholinergics, cholinesterase inhibitors (ChEIs), and diuretics among people with dementia taking bladder antimuscarinics.

Methods

Retrospective descriptive study using data from the National Health and Aging Trends Study (2011–2014) linked with Medicare claims from 2010–2014. The primary outcome was the proportion of serious falls or delirium that were followed by a bladder antimuscarinic prescription fill within 12 months. The secondary outcome was the proportion of individuals concurrently receiving prescriptions for bladder antimuscarinics, other strong anticholinergics, ChEIs, and diuretics.

Results

During the observation period, 8.88% of people with dementia filled a bladder antimuscarinic prescription. Over one-third (35%) initiated use after being identified as having dementia. Many used bladder antimuscarinics concurrently with other strong anticholinergics (19%), diuretics (42%), and ChEIs (32%). The majority (76%) of serious falls or delirium among people with dementia and bladder antimuscarinic use were followed by a bladder antimuscarinic prescription within 12 months.

Conclusions

In this descriptive study, bladder antimuscarinic prescriptions were often filled irrespective of dementia status, serious falls, or delirium. Concurrent use of other anticholinergics, diuretics, and ChEIs was common. Falls and delirium should trigger review of the medication list after discharge and targeted deprescribing in people with dementia.

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.

Association of osteoarthritis and pain with Alzheimer's Diseases and Related Dementias among older adults in the United States

BACKGROUND

Emerging evidence suggests that Pain Interference (PI) and certain chronic pain conditions, including Osteoarthritis (OA) may be associated with risk for Alzheimer's disease and Related Dementias (ADRD). However, research exploring the relation of OA and PI to ADRD remains sparse.

OBJECTIVE

To assess the association of OA and PI to ADRD using cross-sectional data from a representative sample of USA adults aged ≥65 years.

DESIGN

Retrospective cross-sectional.

STUDY SAMPLE

Older adults (age ≥ 65 years) drawn from the Medical Expenditure Panel Survey (MEPS, 2009-2015).

METHODS

OA was identified using both medical conditions files and participant responses to arthritis-specific queries. ADRD was ascertained using the medical conditions files. PI was defined as reported frequent PI with normal activities (PIA). OA and PIA were categorized as a composite variable: 1) OA with PIA; 2) OA without PIA; 3) No OA with PIA; and 4) No OA and no PIA (reference group). Adjusted associations of OA and PIA to ADRD were assessed using logistic regression and adjusted for biological, demographic, socio-economic, lifestyle, and health conditions.

RESULTS

Overall, 27.1% had OA, of whom 47.6 % reported PIA vs 31.1% of those without OA; 2.8% had diagnosed ADRD. Adults with PIA either with or without OA had significantly higher odds of ADRD relative to those without OA or PIA (Adjusted odd ratios (AOR's) = 1.37, 95%CI - 1.01, 1.86 (p = 0.04) and 1.44, 95%CI - 1.13, 1.82 (p = 0.003), respectively).

CONCLUSION

PIA in both the presence and absence of OA remained significantly and positively associated with ADRD after adjustment for multiple confounders.

Determinants of prescribing potentially inappropriate medications in a nationwide cohort of community dwellers with dementia receiving a comprehensive geriatric assessment

OBJECTIVE

To identify the prevalence and predictors of prescribing potentially inappropriate medications (PIMs) in a nationwide cohort of community dwellers with dementia requiring complex care needs.

METHODS

A cross-matched data of the International Resident Assessment Instrument-Home Care (9.1) (interRAI-HC) and prescribing data obtained from the Pharmaceutical Claims Data Mart (Pharms) extract files for older adults (≥65 y) requiring complex care needs were utilized for this study. The 2015 Beers criteria were applied to identify the prevalence of PIMs in older adults with dementia. Sociodemographic and clinical predictors of PIMs were analysed using a logistic regression model.

RESULTS

The study population consisted of 16 568 individuals who had their first interRAI assessment from 1 January 2015 to 31 December 2015. The estimated prevalence of dementia was 13.2% (2190/16 568). 66.9% (1465/2190) of the older adults diagnosed with dementia were prescribed PIMs, of which anticholinergic medications constituted 59.6% (873/1465). Males and individuals who were prescribed a greater number of medications were more likely to be prescribed PIMs. Individuals over 85 years of age, Māori ethnic group of individuals, older adults who were being supervised with respect to their activities of daily living, and individuals who reported good or excellent self-reported health had a lesser likelihood of being prescribed PIMs.

CONCLUSION

We found that PIMs are prescribed frequently in older adults with dementia. Comprehensive geriatric assessments can serve as a potential tool to decrease the occurrence of PIMs in vulnerable groups with poor functional and cognitive status.

National Prescribing Trends for High-Risk Anticholinergic Medications in Older Adults

OBJECTIVES

To estimate prescribing tends of and correlates independently associated with high-risk anticholinergic prescriptions in adults aged 65 and older in office-based outpatient visits.

DESIGN

Repeated cross-sectional analysis.

SETTING

National Ambulatory Medical Care Survey (NAMCS).

PARTICIPANTS

A national sample of office-based physician visits by adults aged 65 and older from 2006 to 2015 (n=96,996 unweighted).

MEASUREMENTS

Prescriptions of high-risk anticholinergics, regardless of indication, were identified, and overall prescribing trends were estimated from 2006 to 2015. Stratified analyses of prescribing trends according to physician specialty and anticholinergic drug class were also performed. We used a multivariable logistic regression analysis to estimate the odds of high-risk anticholinergic prescription.

RESULTS

Between 2006 and 2015, a high-risk anticholinergic prescription was listed for 5,876 (6.2%) 96,996 visits of older adults, representative of 14.6 million total visits nationally. The most common drug classes were antidepressants, antimuscarinics, and antihistamines, which accounted for more than 70% of prescribed anticholinergics. Correlates independently associated with greater odds of receiving a high-risk anticholinergic prescription were female sex, the Southern geographic region, specific physician specialties (e.g., psychiatry, urology), receipt of 6 or more concomitantly prescribed medications, and related clinical diagnoses (e.g., urinary continence) (p<.01 for all).

CONCLUSION

The prevalence of high-risk anticholinergic prescriptions was stable over time but varied according to physician specialty and drug class. Quality prescribing should be promoted because safer alternatives are available.

Community Pharmacists' Knowledge Regarding Donepezil Averse Effects and Self-Care Recommendations for Insomnia for Persons with AD

Alzheimer's disease (AD) impacts millions of individuals worldwide. Since no cure is currently available, acetylcholinesterase inhibitors are symptomatic therapy. This study assessed community pharmacists' knowledge regarding donepezil adverse effects (AEs) and self-care recommendations for insomnia management for persons with AD treated with rivastigmine. This is a cross-sectional, standardized telephone survey of community pharmacists (n = 862) in three study areas: West Virginia, North Dakota/South Dakota, and Southern Oregon/Northern California. Pharmacists' degree, sex, and pharmacists' AD-related knowledge were assessed. In-stock availability of donepezil and rivastigmine formulations was assessed. Analyses were performed using Stata 10.1. Only 31.4% pharmacists were able to name ≥2 donepezil AEs. Only four donepezil AEs were named by at least 13% of pharmacists: nausea (36.1%), dizziness (25.1%), diarrhea (15.0%), and vomiting (13.9%). All other AEs were named by fewer than 7% of respondents. Only 62.9% of pharmacists (n = 542) provided appropriate recommendations: melatonin (40.3%), referral to physician (22.0%), or sleep hygiene (0.6%). Over 12% of pharmacists (n = 107) provided inappropriate recommendations (anticholinergic agent or valerian root) and 21.5% of pharmacists were unable to provide any recommendation. We identified significant gaps in community pharmacists' knowledge regarding donepezil AEs and non-prescription insomnia recommendation needing significant improvement to ensure high-quality AD-related care.

Prevalence, Patterns, and Predictors of Depression Treatment among Community-Dwelling Elderly Individuals with Dementia in the United States

OBJECTIVES

Co-occurring dementia and depression exerts a substantial burden on the elderly. This study utilizes data from a nationally representative cohort of community-dwelling individuals 65 years and older to examine the prevalence, patterns, and predictors of depression treatment among elderly individuals with co-occurring dementia and depression.

DESIGN

Retrospective, cross-sectional study.

SETTING

Multiple years of Medical Expenditure Panel Survey (2002, 2004, 2006, 2008, 2010, and 2012) data.

PARTICIPANTS

The study sample consisted of elderly (age ≥65 years) individuals who 1) had dementia, 2) were alive during the calendar year, and 3) had co-occurring depression.

MEASUREMENTS

The dependent variable of this study was depression treatment, identified by antidepressant medication with or without psychotherapy use. Individual level factors associated with depression treatment among elderly individuals with dementia and co-occurring depression were evaluated by conducting multinomial logistic regression.

RESULTS

Co-occurring depression prevalence among community-dwelling elderly individuals with dementia was approximately 22%. An overwhelming majority (nearly 88%) of the study sample reported receipt of depression treatment. Antidepressants only and combination therapy (antidepressant with psychotherapy) was reported by 75% and 13%, respectively, of the study sample. Age, race/ethnicity, marital status, limitations of instrumental activities of daily living, perceived mental health status, and pain were significantly associated with the reporting of receipt of depression treatment.

CONCLUSIONS

An overwhelming majority of the study sample received depression treatment and several subgroup differences (such as in terms of age) existed in terms of reporting the use of depression treatment was observed.

Pharmacological Management of Anxiety Disorders in the Elderly

Anxiety disorders are common in the elderly. Additionally, anxiety symptoms often accompany co-morbid psychiatric, medical, as well as neurodegenerative diseases in the older population. Anxiety in the elderly, often accompanied by depression, can lead to worsening physical, cognitive and functional impairments in this vulnerable population. Antidepressants are considered first line treatment. Both SSRIs and SNRIs are efficacious and well-tolerated in the elderly. Some SSRIs are strong inhibitors of the cytochrome P450 hepatic pathway whereas others have less potential for drug interaction. Those antidepressants with more favorable pharmacokinetic profiles should be considered first-line in the treatment of anxiety. Mirtazapine and vortioxetine are also considered safe treatment options. Buspirone may have benefit, but lacks studies in elderly populations. Although tricyclic/tetracyclic antidepressants (TCAs) and monoamine oxidase inhibitors (MAOIs) may be effective in the elderly, their side effect and safety profiles are suboptimal and thus are not recommended in late-life. Benzodiazepines and beta blockers should generally be avoided when treating anxiety in the elderly. There is not enough evidence to support the use of antipsychotics or mood stabilizers given their risk of problems in both the long and short term. In addition, antipsychotics have a black box warning for increased mortality in elderly patients with dementia.