Specialized Versus Generic Allied Health Therapy and the Risk of Parkinson's Disease Complications

Effect of Early Levodopa Treatment on Mortality in People with Parkinson's Disease

BACKGROUND

The ideal timing for initiating levodopa in newly diagnosed people with Parkinson's disease (PD) is uncertain due to limited data on the long-term effects of levodopa.

OBJECTIVE

The aim was to investigate whether early levodopa initiation postpones mortality (primary outcome), the requirement of device-aided therapies, and the incidence of PD-related complications, such as fall-induced injuries.

METHODS

Using nationwide claims data from Dutch hospitals (2012-2020), we grouped newly diagnosed PD individuals as "early initiators" (initiating levodopa within 2 years of diagnosis) or "nonearly initiators." We used the national death registry to assess mortality and health-care claims to assess PD-related complications and device-aided therapies. We used marginal structural models to compare mortality and device-aided therapy rates between groups, and a Poisson regression model to compare PD-related complication rates.

RESULTS

Among 29,943 newly diagnosed PD individuals (mean age at diagnosis: 71.6, 38.5% female), there were 24,847 early and 5096 nonearly levodopa initiators. Over a median 4.25 years, 8109 (27.1%) died. The causal risk ratio for mortality was 1.04 (95% confidence interval [CI] 0.92-1.19) for early versus nonearly initiators. The risk ratio of receiving any device-aided therapy was 3.19 (95% CI 2.56-5.80). No association was observed with incidence of PD-related complications (incidence rate ratio: 1.00, 95% CI 0.96-1.05).

CONCLUSIONS

Early levodopa initiation in PD does neither postpone nor accelerate mortality or PD-related complications, nor does it precipitate earlier occurrence of PD-related complications or mortality. However, we cannot exclude that the results were influenced by residual confounding due to unmeasured risk factors of mortality.

Effectiveness of remotely delivered speech therapy in persons with Parkinson's disease - a randomised controlled trial

Background

Increasing evidence supports the merits of speech therapy in Parkinson's disease, but the current practice of multiple in-house treatments is demanding for patients. We therefore assessed the effectiveness of remotely delivered and personalised speech therapy on improving quality of life and speech quality in persons with Parkinson's disease.

Methods

We performed a single blinded randomised controlled trial (the PERSPECTIVE study), comparing 8 weeks of personalised remote speech therapy to no intervention (waiting list design). Patients with reduced speech intelligibility were included, regardless of disease stage or dysarthria severity. Patients were assigned randomly (1:1) to the intervention or control group. Measurements took place at baseline and after 8 weeks (both groups), and after 32 weeks (intervention group only). Patients were treated remotely by 20 experienced speech therapists. The primary outcome was disease-related quality of life at 8 weeks, assessed with the Parkinson's Disease Questionnaire 39 (PDQ-39). Data were analysed using analysis of covariance based on the intention-to-treat principle. This trial is registered in ClinicalTrials.gov, NCT03963388.

Findings

Between March 1, 2019, and March 27, 2021, 214 patients were enrolled in the intervention group (n = 109) or control group (n = 105). At the primary timepoint, the adjusted mean difference in PDQ-39 was -2.0 in favour of the intervention group (95% CI -4.0 to 0.1); p = 0.056). The intervention group scored better on the communication index score of the PDQ-39 (post hoc analysis), with an adjusted mean difference of -5.3 (95% CI -9.4 to -1.2; p = 0.011). We found no between-group differences on any other PDQ-39 domain. Follow-up measurements showed a significant reduction of the PDQ-39 compared to the primary timepoint with a difference of 2.40 (95% CI 0.77-4.02; p = 0.004).

Interpretation

Personalised remote speech therapy improved communication-related quality of life, but not overall quality of life.

Funding

Michael J. Fox Foundation, Gatsby Foundation, and Health∼Holland.

Client Perceptions of the Individual Packer Managing Fatigue Program: A Mixed-Method Evaluation

Fatigue is common, but under-recognized in Parkinson's disease (PD), with limited treatment options. The aim of this study is to explore the experience of people with PD (PwPD) regarding content and delivery of the individual Packer Managing Fatigue program. This mixed-method study (n = 12) was conducted concurrently with a pilot randomized controlled trial. Data were collected using questionnaires, interviews, and focus groups. Five themes emerged: the program is helpful; the program has strengths; areas for improvement; individual online delivery is feasible; and more support from occupational therapist would be helpful. Quantitative findings confirmed feasibility with high ratings on questionnaires and confidence to use learned strategies. The findings inform future implementation of the Packer Managing Fatigue program and contribute to understanding the needs of PwPD. Future studies might explore program's effectiveness as stand-alone treatment or in combination with other approaches. Tailoring fatigue programs to PwPD's unique needs and characteristics of PD fatigue is suggested.

Experiences of health service access: A qualitative interview study of people living with Parkinson's disease in Ireland

BACKGROUND

People with Parkinson's disease (PD) do not always access specialist outpatient services in a timely manner in Ireland. The perspectives of people living with PD, relating to service access, are largely absent in the existing literature.

AIM

To explore experiences of PD service access for people living with PD, using a qualitative approach.

METHODS

Purposive maximum variation sampling was used. Semi-structured telephone interviews were conducted with 25 service users, including people with PD (n = 22) and supporting carers (n = 3). Informed consent was obtained from all participants. Interviews ranged in duration from 30 to 90 min. Data were managed in NVivo 12 and interpreted inductively using thematic analysis. The researchers were reflexive throughout the research process. The Consolidated Criteria for Reporting Qualitative Research checklist was employed to maximise transparency.

RESULTS

The findings highlight several key barriers to and facilitators of equitable and timely service access. Three key themes were identified comprising experiences of PD service access including 'geographical inequity', 'discriminatory practices', and 'public and private system deficits'. Together, these themes illustrate how a two-tiered and under-resourced health system lacks capacity, in terms of infrastructure and workforce, to meet PD needs for both public and private patients in Ireland.

CONCLUSIONS

These findings point to problems for PD care, relating to (i) how the health system is structured, (ii) the under-provision and under-resourcing of specialist outpatient PD services, including medical, nursing, and multidisciplinary posts, and (iii) insufficient PD awareness education and training across health settings. The findings also show that telemedicine can provide opportunities for making access to certain aspects of PD care more flexible and equitable, but the feasibility and acceptability of technology-enabled care must be assessed on an individual basis. Implications for policy, practice and research are discussed.

PATIENT OR PUBLIC CONTRIBUTION

The design and conduct of this study were supported by an expert advisory group (EAG) of 10 co-researchers living with PD. The EAG reviewed the interview schedule and the protocol for this study and provided detailed feedback from their perspective, to improve the methods, including the interview approach. The group also reviewed the findings of the study and contributed their insights on the meaning of the findings, which fed into this paper.

Delivery of Allied Health Therapies to People with Parkinson's Disease in Africa

Allied health therapies refer to a range of healthcare professionals, including physiotherapists, occupational and speech-language therapists, who aim to optimize daily function and quality of life in conjunction with medical care. In this narrative review of literature on allied health therapies in people with Parkinson's disease (PD), we focused on the diversity in healthcare access, state of the art, current challenges in the African continent, and proposed solutions and future perspectives. Despite the increasing prevalence and awareness of PD in Africa, numerous challenges persist in its management. These include resource limitations, geographical barriers, sociocultural beliefs, and economic constraints. Nevertheless, innovative solutions, including telerehabilitation and community-based rehabilitation, offer hope. Collaborative efforts within the continent and internationally have shown potential in bridging training and resource gaps. Significant strides can be made with tailored interventions, technological advancements, and multifaceted collaborations. This review offers practical insights for healthcare professionals, policymakers, and caregivers to navigate and optimize PD care in the African context.

Parkinson's Disease Is Predominantly an Environmental Disease

Parkinson's disease is the world's fastest growing brain disorder, and exposure to environmental toxicants is the principal reason. In this paper, we consider alternative, but unsatisfactory, explanations for its rise, including improved diagnostic skills, aging populations, and genetic causes. We then detail three environmental toxicants that are likely among the main causes of Parkinson's disease- certain pesticides, the solvent trichloroethylene, and air pollution. All three environmental toxicants are ubiquitous, many affect mitochondrial functioning, and all can access humans via various routes, including inhalation and ingestion. We reach the hopeful conclusion that most of Parkinson's disease is thus preventable and that we can help to create a world where Parkinson's disease is increasingly rare.

Specialized Allied Health Care for Parkinson's Disease: State of the Art and Future Directions

People with Parkinson's disease (PD) experience a range of progressive motor and non-motor symptoms, that negatively affect their daily functioning, social participation and quality of life. Allied health therapies have emerged as an effective treatment approach-complementary to pharmacological and neurosurgical treatments-which reduces the impact of PD in daily life. In this article, we propose criteria for what constitutes specialized allied health care for PD, and we review allied health research in PD in terms of meeting these criteria and its outcomes for monodisciplinary approaches as well as multi- or interdisciplinary allied health interventions. We focus on the three most studied allied health disciplines in PD: physical therapy, occupational therapy and speech-language therapy. Overall, the available evidence underscores the importance and potential benefits of specialized allied health care for people with PD. Our proposed criteria and recommendations for future research might help in further delineating specialized allied health care.

Concept Mapping to Define Components for an Occupation-Based Intervention for Parkinson's Disease and Anxiety

BACKGROUND

Anxiety, a common symptom of Parkinson's disease (PD), results in reduced life quality, reduced participation in meaningful roles and daily activities, and increased health burden. There are no evidence-based interventions to reduce the impact of anxiety in PD on participation.

OBJECTIVE

This study aimed to identify the key components required for the co-production of an occupation- and community-based intervention for people with PD-related anxiety.

METHODS

A participatory mixed-methods research study was conducted using online Group Concept Mapping methodology that included five stages: brainstorming, idea synthesis, sorting activity, rating activity, and analysis. A cluster map, pattern match, and 'go-zone' charts were created through multivariate statistical analysis based on participants' responses. The stages were guided by questions generated by the research team working with stakeholders.

RESULTS

Eighty-three people participated, with 64 taking part in more than one activity. Participants included people with PD (n = 72), care partners (n = 6), and occupational therapists (n = 5). The final map contained 119 statements with eight clusters (stress value 0.252): exercise, lifestyle changes, self-help, coping, access to information, professional help, peers and groups, support from others. Significant agreement existed between the importance and feasibility rating activities (r = -0.07). 'Go-zone' charts highlighted the priority statements for intervention development.

CONCLUSIONS

This novel participatory study highlighted priority components that provide starting points for future development of an occupation- and community-based intervention for people with PD-related anxiety.

Exercise Made Accessible: the Merits of Community-Based Programs for Persons with Parkinson's Disease

PURPOSE OF REVIEW

Many studies have identified positive effects of physiotherapy and exercise for persons with Parkinson's disease (PD). Most work has thus far focused on the therapeutic modality of exercise as used within physiotherapy programs. Stimulated by these positive findings, there is now a strong move to take exercise out of the clinical setting and to deliver the interventions in the community. Although the goals and effects of many such community-based exercise programs overlap with those of physiotherapy, it has also become more clear that both exercise modalities also differ in various ways. Here, we aim to comprehensively review the evidence for community-based exercise in PD.

RECENT FINDINGS

Many different types of community-based exercise for people with PD are emerging and they are increasingly being studied. There is a great heterogeneity considering the types of exercise, study designs, and outcome measures used in research on this subject. While this review is positive regarding the feasibility and potential effects of community-based exercise, it is also evident that the general quality of these studies needs improvement. By focusing on community-based exercise, we hope to generate more knowledge on the effects of a wide range of different exercise modalities that can be beneficial for people with PD. This knowledge may help people with PD to select the type and setting of exercise activity that matches best with their personal abilities and preferences. As such, these insights will contribute to an improved self-management of PD.

Time trends in demographic characteristics of participants and outcome measures in Parkinson's disease research: A 19-year single-center experience

Background

Females, people with young-onset PD and older individuals, and non-white populations are historically underrepresented in clinical Parkinson's disease (PD) research. Furthermore, research traditionally focused predominantly on motor symptoms of PD. Including a representative and diverse group of people with PD and also studying non-motor symptoms is warranted to better understand heterogeneity in PD and to generalize research findings.

Objective

This project aimed to determine whether, within a consecutive series of PD studies performed within a single center in the Netherlands: (1) the proportion of included females, mean age and proportion of native Dutch people changed over time; and 2) reports of the ethnicity of participants and the proportion of studies with non-motor outcomes changed over time.

Methods

Characteristics of participants and non-motor outcomes were analyzed using a unique dataset of summary statistics of studies with a large number of participants conducted at a single center during a 19-year period (2003-2021).

Results

Results indicate no relationship between calendar time and proportion of females (mean 39 %), mean age (66 years), proportion of studies that reported ethnicity, and proportion of native Dutch people in studies (range 97-100 %). The proportion of participants in whom non-motor symptoms were assessed increased, but this difference was consistent with chance.

Conclusion

Study participants in this center reflect the PD population in the Netherlands in terms of sex, but older individuals and non-native Dutch individuals are under-represented. We have still a lot to do in ensuring adequate representation and diversity in PD patients within our research.

Worsening of Parkinson's Disease After Termination of COVID-19 Quarantine Cannot Be Reversed Despite Resumption of Physiotherapy

In a retrospective analysis, we recently reported findings on the detrimental motor effects of interrupted physiotherapy following the COVID-19 pandemic in parkinsonian patients. Using an extended follow-up period, we investigated the beneficial effect of reinstated physiotherapy on patients' disease severity and reversal of interruption-induced motor deterioration. Compared to before the COVID-19 outbreak, we observed persistence of motor disease worsening despite full resumption of state-of-the-art physical therapy suggesting that motor deterioration after discontinuation of physical therapy could not be compensated for. Therefore, and considering possible future crises, establishing means to safeguard continuation of physical therapy and to foster remote provision of care should be major goals.