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Published on: February 27, 2018
Predictors of cognitive dysfunction after major noncardiac surgery
Terri G Monk1, B Craig Weldon, Cyndi W Garvan
1Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, 27705, USA. terri.monk@duke.edu
Anesthesiology
|December 25, 2007
Summary
Advancing age increases the risk of postoperative cognitive dysfunction (POCD) after noncardiac surgery, particularly in the elderly. POCD is linked to a higher mortality risk within the first year post-surgery.
Area of Science:
- Gerontology
- Anesthesiology
- Neuroscience
Background:
- Investigating the link between aging and postoperative cognitive dysfunction (POCD) after major noncardiac surgery.
- Examining the impact of POCD on one-year mortality following surgery.
Purpose of the Study:
- To determine if advanced age is a risk factor for POCD.
- To assess the effect of POCD on mortality within the first year after noncardiac surgery.
Main Methods:
- Prospective longitudinal study of 1064 patients aged 18+ undergoing noncardiac surgery.
- Neuropsychological testing at baseline, discharge, and 3 months post-surgery; survival status assessed at 1 year.
- Patients categorized into young (18-39), middle-aged (40-59), and elderly (60+).
Main Results:
- POCD prevalence at discharge: 36.6% young, 30.4% middle-aged, 41.4% elderly.
- At 3 months, POCD was significantly higher in the elderly (12.7%) compared to controls.
- Independent risk factors for POCD included older age, lower education, prior stroke, and discharge POCD. POCD at discharge and 3 months increased mortality risk.
Conclusions:
- Cognitive dysfunction is common post-surgery across all adult ages but persistent issues are significant only in the elderly.
- Elderly patients (60+) face a higher risk of long-term cognitive impairment after major noncardiac surgery.
- Postoperative cognitive dysfunction is associated with an increased risk of mortality in the first year after surgery.
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