A guideline for the treatment of dementia in Japan

Analysis of Japanese nationwide health datasets: association between lifestyle habits and prevalence of neuropathic pain and fibromyalgia with reference to dementia-related diseases and Parkinson's disease

OBJECTIVES

Chronic pain is defined as pain that persists or recurs for more than 3 months. This study focuses on neuropathic pain (NP) and fibromyalgia (FM) which are chronic pain states, and aims to identify lifestyle habits associated with their prevalence. Other neurological disorders are also analyzed as references.

METHODS

Association between the variable referring to disease prevalence (number of claims for reimbursement of marker drugs) and the variable for lifestyle habits/health examination results (collected from insured individuals aged 40-74 years) was determined by analyzing Japanese nationwide datasets, which were collected in 2018 and aggregated by prefecture. Pregabalin, donepezil, and levodopa were used as marker drugs for the chronic pain states, dementia-related diseases (Alzheimer's disease and Lewy body dementia) and Parkinson's disease (PD), respectively. Pearson's correlation analysis and multiple linear regression analysis were conducted.

RESULTS

Variables showing correlation coefficient (|r|)>0.5 were put into the multiple linear regression. Exercise habits (ꞵ=-0.3182), smoking habits (0.3218), daily drinking (0.2683), and alanine aminotransferase>51 U/L (0.2309) were finally incorporated in the equation for pregabalin (R 2=0.7268). Walking speed (-0.4543) and daily drinking (0.5077) were incorporated in the equation for donepezil (R 2=0.5718).

CONCLUSIONS

The prevalence of chronic pain states is associated with lifestyle habits, just like the dementia-related diseases. Exercise in daily life is negatively associated with the prevalence of the chronic pain states, although excessive alcohol drinking, smoking, and high serum ALT are positively associated with it. The prevalence of PD seems less associated with lifestyle habits.

Treatment Patterns with Antidementia Drugs in the United States: Medicare Cohort Study

OBJECTIVES

To evaluate frequency of use of two anti-dementia drug classes approved for treatment of symptoms, whether populations most likely to benefit are treated, and correlates of treatment initiation.

DESIGN

Nationally representative cohort study.

SETTING

Fee-for-service Medicare.

PARTICIPANTS

Elderly adults with dementia enrolled in Medicare Parts A, B, and D in 2009 (N = 433,559) and a subset with incident dementia (n = 185,449).

MEASUREMENTS

Main outcome was any prescription fill for antidementia drugs (cholinesterase inhibitors (ChEIs) or memantine) within 1 year.

RESULTS

Treatment with antidementia drugs occurred in 55.8% of all participants with dementia and 49.3% of those with incident dementia. There was no difference between ChEIs and memantine use according to dementia severity (measured as death within first year or living in residential care vs in a community setting) even though memantine is not indicated in mild disease. In incident cases, initiation of treatment was lower in residential care (relative risk (RR) = 0.82, 95% confidence interval (CI) = 0.81-0.83) and with more comorbidities (RR = 0.96, 95% CI = 0.96-0.96). Sixty percent of participants were managed in primary care alone. Seeing a neurologist (RR = 1.07, 95% CI = 1.06-1.09) or psychiatrist (RR = 1.17, 95% CI = 1.16-1.19) was associated with higher likelihood of treatment than seeing a primary care provider alone, and seeing geriatrician was associated with with lower likelihood (RR = 0.96, 95% CI = 0.93-0.99). Across the United States, the proportion of newly diagnosed individuals started on antidementia treatment varied from 32% to 66% across hospital referral regions.

CONCLUSION

Antidementia drugs are used less often in people with late disease, but there is no differentiation in medication choice. Although primary care providers most often prescribe antidementia medication without specialty support, differences in practice between specialties are evident.

Treatment guidelines for Alzheimer's disease: redefining perceptions in primary care

BACKGROUND

Current treatment guidelines for Alzheimer's disease (AD) do not reflect more recently collected data on therapeutic outcomes other than cognitive function and memory, and this has led to a limited understanding of the value of drug therapy in AD.

OBJECTIVES

To evaluate the need to revise treatment guidelines for AD, to review data that have become available since the publication of current guidelines, and to communicate how existing guidelines and relevant new data can be valuable to the primary care provider who assesses and treats patients with AD.

DATA SOURCES

A MEDLINE search was conducted to identify existing treatment guidelines using the MeSH headings Alzheimer disease-drug therapy AND practice guidelines. The alternative terms treatment guidelines, practice parameter, and practice recommendation were also searched in conjunction with the MeSH term Alzheimer disease-drug therapy. Additionally, MEDLINE was searched using the term dementia and publication type "practice guideline." All searches were limited to articles published within the last 10 years, in English. A total of 116 articles were identified by these searches. Additional publications were identified by manually searching the reference lists of these articles and of published clinical trials of AD therapies.

STUDY SELECTION AND DATA EXTRACTION

Current AD treatment guidelines and clinical trial results for AD treatment options were extracted, reviewed, and summarized to meet the objectives of this article.

DATA SYNTHESIS

Current guidelines support the use of cholinesterase inhibitors in patients with mild to moderate AD. More recent clinical research indicates that cholinesterase inhibitor treatment provides effectiveness across a wide range of dementia severity and multiple symptom domains. These medications also significantly decrease caregiver burden and may lower the risk for nursing home placement.

CONCLUSIONS

The expanding literature on AD medications suggests that treatment guidelines need to be reexamined. Recent data emphasize preservation of abilities and delay of adverse outcomes in AD patients rather than short-term improvements in cognitive test scores. Treatment appears to provide the greatest benefit when it is initiated early in the course of the disease and maintained over the long term. Revised treatment guidelines should address newer medications and more recent outcomes considerations, as well as provide guidance on how long to continue and when to discontinue pharmacotherapy for AD.

Increasing rational use of cholinesterase inhibitors for Alzheimer's disease in Brazil: Public health strategy combining guideline with peer-review of prescriptions

Objectives: Since 2002, the treatment with cholinesterase inhibitors (CHEIs) for Alzheimer's disease (AD) has been paid for by the public health system of the Brazilian Ministry of Health for any patient that fulfills clinical criteria established by an evidence-based guideline developed and published by the Ministry. The aim of this study was to evaluate compliance of prescription patterns to the national guideline for use of CHEIs’ in the southern Brazilian state of Rio Grande do Sul.

Methods: We created a regional expert-committee reference center to review all prescriptions of CHEIs and to send feedback to physicians whenever prescriptions without compliance to the guideline were noted. One thousand three hundred ninety-nine (1,399) CHEI prescriptions presented to the public health system from 2005 to 2007 were evaluated by an expert team of neurologists and psychiatrists. Clinical history, performance on mental status screening by Mini Mental State Examination (MMSE), Clinical Dementia Rating scale (CDR), laboratory results, and neuroimaging findings were evaluated in relation to the adherence to the national guideline's recommendations. If the prescription was rejected because of lack of adherence to the criteria of the guideline, a written response was sent by the expert committee to physicians concerning the request.

Results: The majority of the requests (n = 1,044; 75 percent) did not meet the AD guideline's criteria, either for diagnosis or for treatment, and were not granted. A diagnostic mistake was evident in 64.3 percent of cases. Findings of vascular or Parkinson's dementia or severe AD were the main reasons for rejection. Rivastigmine was the most prescribed cholinesterase inhibitor, used in 86 percent of cases. Of note was the reduction in the number of CHEIs prescriptions in the years following this intervention.

Conclusions: The public health strategy of using expert-review of prescriptions and their compliance to national guideline revealed a low rate of rational use of CHEIs for dementia. Such a strategy is relevant for protecting patients from unproven medical interventions and for reducing waste of resources.