Strengthening the Tripod: Upholding Autonomy Through Capacity Assessment, Surrogate Decision-Making, and Research...

Area of Science:

• Bioethics
• Neuroscience
• Clinical Research Ethics

Background:

• Clinical research for Alzheimer's disease (AD) faces ethical challenges due to cognitive impairment affecting informed consent.
• Research advance directives (RADs) are proposed to preserve autonomy in incapacitated individuals by documenting future research preferences.
• Existing literature often champions RADs, but their effectiveness is debated in complex ethical scenarios.

Purpose of the Study:

• To analyze the essential components required for upholding patient autonomy in AD clinical research.
• To propose a framework for integrating RADs with other ethical safeguards.
• To ensure ethical conduct of clinical research involving individuals with cognitive impairment.

Main Methods:

• Conceptual analysis of ethical principles in clinical research.
• Examination of the roles of capacity assessment, surrogate decision-making, and RADs.
• Literature review of bioethical scholarship on autonomy and informed consent in AD research.

Main Results:

• Patient autonomy in AD research relies on a "tripod" of interconnected elements: capacity assessment, surrogate decision-making, and the RAD itself.
• Capacity assessment determines the activation and revocation of RADs.
• Surrogate decision-makers are crucial for interpreting patient best interests and resolving conflicts using the substituted judgment standard.

Conclusions:

• Research advance directives are insufficient on their own for ethical research with cognitively impaired individuals.
• Effective implementation requires robust capacity assessment to ascertain decisional ability.
• Active surrogate involvement is indispensable for navigating complex research scenarios and aligning past wishes with present well-being, thereby facilitating ethical research.