Cognitive outcomes in elderly high-risk patients after off-pump versus conventional coronary artery bypass grafting: a randomized trial
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Summary
This summary is machine-generated.Off-pump coronary artery bypass grafting (OPCAB) and conventional coronary artery bypass grafting (CCAB) showed no significant difference in cognitive dysfunction rates among elderly, high-risk patients three months post-surgery.
Area Of Science
- Cardiovascular Surgery
- Neuroscience
- Geriatric Medicine
Background
- Preliminary evidence suggests off-pump coronary artery bypass grafting (OPCAB) may reduce cerebral dysfunction compared to conventional coronary artery bypass grafting (CCAB).
- Further research is needed to confirm the comparative risk of cerebral dysfunction between OPCAB and CCAB.
Purpose Of The Study
- To compare the incidence of cognitive dysfunction between OPCAB and CCAB in elderly, high-risk patients.
- To evaluate the long-term effects of surgical approach on cognitive function after coronary artery bypass grafting.
Main Methods
- A substudy of the Best Bypass Surgery trial involving 120 elderly patients (mean age 76).
- Patients underwent psychometric testing pre-surgery and at 3 months post-surgery using a 7-parameter neuropsychological test battery.
- Cognitive dysfunction defined as at least 2 of 7 deficits, with secondary analyses using a 20% score decline and z-score analysis.
Main Results
- Cognitive dysfunction occurred in 7.4% of the OPCAB group (54 patients) and 9.8% of the CCAB group (51 patients).
- No statistically significant difference in cognitive dysfunction incidence was observed between the OPCAB and CCAB groups.
- This finding remained consistent across different definitions of cognitive dysfunction, including a 20% decline and z-score analysis.
Conclusions
- In elderly high-risk patients, OPCAB and CCAB do not significantly differ in the incidence of cognitive dysfunction at 3 months post-procedure.
- The study provides no evidence to support a reduced risk of cerebral dysfunction with OPCAB over CCAB in this patient population.