Accuracy of surrogate decision making in elective surgery

Area of Science:

• Ophthalmology
• Geriatrics
• Medical Ethics

Background:

• Assessing patient capacity for medical decisions is crucial, especially for elderly individuals undergoing elective procedures like cataract surgery.
• Surrogate decision-making is often employed when patients lack capacity, but its accuracy in elective surgical contexts requires evaluation.

Purpose of the Study:

• To evaluate the accuracy of surrogate decision-makers in predicting patient preferences for elective cataract surgery.
• To compare surrogate accuracy in scenarios of current mental health versus hypothetical progressive dementia.

Main Methods:

• A study compared patient preferences for cataract surgery with surrogate predictions in a tertiary care hospital.
• Patient-surrogate pairs (n=32) were assessed for agreement using percentage agreement, kappa coefficient, and chi-square analyses.
• Surrogate accuracy was evaluated for both current mental health and hypothetical dementia scenarios.

Main Results:

• Surrogates accurately predicted patient preferences for surgery in their current state of health (72% agreement).
• In hypothetical dementia scenarios, surrogate accuracy significantly decreased (34% agreement), failing to represent patient wishes.
• Physicians were inclined to withhold surgery in the dementia scenario.

Conclusions:

• Current surrogate decision-making processes for elective surgery may be unreliable, particularly in cases of cognitive decline.
• The findings highlight potential flaws in substituted judgment for elective surgical decisions, extending previous concerns from end-of-life care.