The Association Between Surgery and Mild Cognitive Impairment: Insight from a Case-Control Study

Area of Science:

• Gerontology
• Neurology
• Surgical Science

Background:

• Postoperative cognitive impairment is a concern in elderly patients.
• The specific link between surgery and mild cognitive impairment (MCI) requires further investigation.

Purpose of the Study:

• To investigate the association between surgical procedures and the development of MCI in older adults.
• To identify specific surgical factors, such as risk and timing, that may influence MCI development.

Main Methods:

• Analysis of data from the Alzheimer's Disease Neuroimaging Initiative, including individuals with MCI and normal cognition.
• Focus on surgeries performed after age 45, categorized by number, risk, and age at occurrence.
• Utilized multivariable logistic regression to assess the relationship between surgery and MCI development.

Main Results:

• No significant association was found between overall surgery exposure or the number of surgeries and MCI development.
• High-risk surgeries were associated with an increased risk of developing MCI (adjusted OR = 1.79).
• Surgeries performed after the age of 75 were also linked to a greater risk of MCI (adjusted OR = 2.01).

Conclusions:

• High-risk surgeries and those performed at an older age (after 75) are associated with an increased risk of developing MCI.
• These findings suggest complex mechanistic pathways contributing to postoperative cognitive impairment.