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Published on: September 15, 2023
[Factors for the development of persistent postoperative cognitive dysfunction in patients undergoing coronary artery
O A Trubnikova1, I V Tarasova1, O V Maleva1
1Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia.
Insights
High baseline cognition, early cognitive decline, poor treatment adherence, and carotid artery stenosis predict persistent postoperative cognitive dysfunction after coronary artery bypass surgery. These factors highlight the multifactorial nature of this condition.
Area of Science:
- Cardiology
- Neurology
- Surgical Outcomes
Background:
- Coronary artery bypass surgery (CABS) using extracorporeal circulation (EC) is a common procedure for coronary heart disease (CHD).
- Postoperative cognitive dysfunction (POCD) is a recognized complication, with persistent POCD posing a significant long-term concern for patients.
Purpose of the Study:
- To identify key factors predicting the development of persistent POCD in patients undergoing CABS under EC.
- To analyze the multifactorial contributors to long-term cognitive impairment following cardiac surgery.
Main Methods:
- A cohort of 257 male patients (aged 45-69) with CHD undergoing elective CABS under EC were assessed.
- Neuropsychological testing was performed preoperatively, early postoperatively (7-14 days), and at 1-year follow-up.
- Persistent POCD was defined as a 20% decline in cognitive domains at 1 year; binary logistic regression identified risk factors.
Main Results:
- High baseline cognitive status was associated with an increased risk of persistent POCD.
- Early POCD, low adherence to treatment regimens, and progressive carotid artery stenosis were significant predictors.
- These factors collectively predicted persistent POCD with 85% probability at 1 year post-surgery.
Conclusions:
- Persistent POCD following CABS under EC is multifactorial.
- Preoperative cognitive status, early postoperative cognitive changes, treatment adherence, and carotid artery health are crucial determinants.
Aim:
To analyze the factors contributing to the increased risk of persistent postoperative cognitive dysfunction (POCD) in patients undergoing coronary artery bypass surgery (CABS) under extracorporeal circulation (EC).
Subjects And Methods:
257 male patients aged 45 to 69 years with coronary heart disease (CHD) undergoing elective CABS under EC were examined. In addition to conventional clinical examination, all the patients underwent neuropsychological testing 3-5 days before, 7-14 days and 1 year after CABS. Persistent POCD was diagnosed if there was a 20% decline in cognitive domains at 1-year postoperatively versus preoperatively in 20% of the tests of an entire neuropsychological battery. Binary logistic regression analysis was applied to identify the factors supposedly increasing the risk of persistent POCD.
Results:
It was found that high baseline cognitive status, early POCD after CABG under EC, low adherence to the prescribed treatment regimen, as well as progressive carotid artery (CA) stenosis could predict with a high (85%) probability that persistent POCD might develop at 1 year after surgery.
Conclusion:
The findings are suggestive of the multifactorial origin of persistent POCD, a significant role in the development of which is played by not only the preoperative cognitive status, but also by postoperative factors, such as the degree of adherence to the prescribed treatment regimen, early POCD, and progressive CA stenosis.
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