ObjectiveTo evaluate the point of view of patients with Parkinson disease (PD) on early detection and risk disclosure in the prodromal phase of PD and to derive recommendations for an ethical framework for the recruitment of prodromal PD cohorts.MethodsA standardized questionnaire to evaluate the patients' perception on early diagnosis in PD was designed by an interdisciplinary study group. After testing in a preliminary feasibility study (n = 20), the survey was performed retrospectively with patients from our clinic.ResultsA total of 101 patients with PD answered the questions. The majority of patients reported that time from onset of motor symptoms to diagnosis was burdensome, including false diagnoses and many consultations of various medical specialists. However, most of the patients evaluated early risk disclosure with skepticism. Freedom of choice and the potential of changes in lifestyle were rated as important.ConclusionAlthough patients with PD reported the time to diagnosis retrospectively as burdensome, the majority was skeptical regarding early disclosure of risk, especially with regard to the lack of pharmacologic options. Circumstances under which early detection and disclosure would have been approved by the majority of patients were (1) advice on lifestyle changes (exercise, nutrition) as potentially disease course–modifying therapy; (2) the establishment of an early diagnosis “culture,” including early clarification of the patients' wish to know; and (3) regular support and follow-up of individuals after risk disclosure.
A BS TRACT: Background: Impressive progress in the understanding of the prodromal phase of Parkinson's disease (PD) in recent years has enabled the generation of disease prediction models. However, a remaining diagnostic uncertainty and lack of therapeutic options for affected individuals has resulted in a variety of ethical issues that have not to date been addressed sufficiently. Moreover, differences in the specificity of prodromal symptoms and possible subtypes of PD, especially the presence of rapid eye movement (REM) sleep behavior disorder (RBD), may have an important impact on prognostic counseling. Objectives: To derive a guideline for risk disclosure in prodromal PD based on the current literature and expert opinion. Methods: We performed (1) a literature review on prognostic counseling in PD and (2) consulted with international experts on prodromal PD using a semi-structured questionnaire based on a Delphi approach to evaluate recommendations for risk disclosure in PD. Results:The literature research revealed only 11 publications addressing prognostic counseling, with only two studies directly addressing affected individuals and most studies focusing on risk disclosure in RBD. The expert survey revealed the importance of distinguishing between individuals with and without RBD in prognostic counseling. Conclusions: Based on the current literature and expert recommendations, a guideline for risk disclosure in prodromal PD for clinical care and research could be elaborated. Prognostic counseling should include differentiation between individuals with and without RBD, taking into account the high uncertainty of risk calculation in RBD-negative prodromal PD.
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