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Dietary advice for patients undergoing coronary artery bypass surgery: falling on deaf ears?
1Wessex Institute for Health Research & Development, Boldrewood University of Southampton, Southampton, SO16 7PX, UK.
Insights
Dietary advice after coronary artery bypass grafting (CABG) surgery did not prevent increased fat and cholesterol intake in patients. This highlights challenges in nutritional advice compliance for cardiovascular disease prevention.
Area of Science:
- Cardiovascular disease
- Nutritional science
- Surgical outcomes
Background:
- Coronary heart disease (CHD) is a leading cause of mortality in the UK.
- Dietary factors significantly influence CHD risk, yet patient dietary patterns remain under-researched.
- Coronary artery bypass grafting (CABG) is a common surgical intervention for CHD.
Purpose of the Study:
- To evaluate the effectiveness of dietary advice given to patients undergoing CABG surgery.
- To assess changes in dietary intake patterns post-CABG surgery.
- To identify potential barriers to adhering to nutritional recommendations in this patient group.
Main Methods:
- A prospective study involving 15 male patients (aged 51-79) undergoing CABG.
- Dietary intake was assessed using a validated food frequency questionnaire at three time points: pre-operatively, 2 months post-surgery, and 1 year post-surgery.
- Patients reported on dietary advice received.
Main Results:
- A significant increase in mean intake of total fat (21%), saturated fat (36%), and dietary cholesterol (51%) was observed 1 year after CABG surgery.
- Food choices reflected these adverse nutritional changes.
- These dietary shifts occurred despite the provision of dietary advice to patients.
Conclusions:
- Dietary advice following CABG surgery was ineffective in improving patient nutrient intake.
- Increased fat and cholesterol consumption post-surgery may exacerbate atherosclerosis and increase the risk of recurrent cardiovascular events.
- Further research is needed to understand and overcome barriers to nutritional advice compliance in CABG patients.
Abstract:
Coronary heart disease (CHD) is the most common cause of death in the UK, accounting for around 125,000 deaths per year. Diet is a CHD risk factor that is modifiable, and therefore has the potential to alter the risk for CHD. At present, little is known about the dietary patterns of CHD patients. The present study aimed to assess the effectiveness of dietary advice administered to patients undergoing coronary artery bypass grafting (CABG) surgery. Dietary intake was assessed on three occasions (pre-operatively, 2 months after surgery and 1 year after surgery) by use of a food amount frequency questionnaire that had been previously validated. Patients were also asked to provide information on any dietary advice they had received. Complete data were available for 15 males, aged 51-79 years, who were admitted for CABG surgery. The absolute mean intakes of total fat, saturated fat and dietary cholesterol significantly increased 1 year after CABG surgery by 21%, 36% and 51%, respectively, and the choice of food items reflected this change in nutrient intake. These undesirable changes occurred despite the provision of dietary advice. This may consequently increase the risk of recurrent problems, and serve to promote further atherosclerosis in the arteries of such patients. The observations highlight the need to better understand the barriers to nutritional advice and compliance seen in CABG patients.