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Reductions in cardiovascular risk after bariatric surgery
Fethi Benraouane1, Sheldon E Litwin
1Cardiology Division, Georgia Health Sciences University, Augusta, Georgia 30912, USA.
Insights
Bariatric surgery significantly improves cardiovascular risk factors in obese patients. Weight loss surgery resolves conditions like hypertension and diabetes, reducing mortality by approximately 50%.
Area of Science:
- Cardiology
- Metabolic Surgery
- Obesity Medicine
Background:
- Obesity is linked to hypertension, dyslipidemia, insulin resistance, and diabetes.
- Sleep-disordered breathing, inflammation, and cardiac structural changes (e.g., left ventricular hypertrophy) are common in obesity.
- These conditions collectively increase cardiovascular morbidity and mortality risk.
Purpose of the Study:
- To review the improvements in cardiovascular risk factors following bariatric surgery.
- To assess the impact of surgically induced weight loss on cardiac structure and function.
Main Methods:
- This is a review article, synthesizing existing research on bariatric surgery outcomes.
- Data from studies examining cardiovascular risk factors and cardiac function post-surgery were analyzed.
Main Results:
- Bariatric surgery leads to significant improvement or resolution of cardiovascular risk factors.
- Improvements in cardiac structure and function are consistently observed after weight loss surgery.
- The degree of improvement correlates with the amount of weight lost, with reductions in 10-year mortality by ~50%.
Conclusions:
- Bariatric surgery effectively improves cardiovascular health in severely obese individuals.
- The data support the expanded use of surgical weight loss procedures for managing obesity-related cardiovascular risks.
Purpose Of Review:
Obesity is commonly associated with multiple conditions imparting adverse cardiovascular risk, including hypertension, dyslipidemia, and insulin resistance or diabetes. In addition, sleep disordered breathing, inflammation, left ventricular hypertrophy, left atrial enlargement, and subclinical left ventricular systolic and diastolic dysfunction may collectively contribute to increased cardiovascular morbidity and mortality. This review will describe improvements in cardiovascular risk factors after bariatric surgery.
Recent Findings:
All of the cardiovascular risk factors listed above are improved or even resolved after bariatric surgery. Cardiac structure and function also have shown consistent improvement after surgically induced weight loss. The amount of improvement in cardiac risk factors is generally proportional to the amount of weight lost. The degree of weight loss varies with different bariatric procedures. On the basis of the improvement in risk profiles, it has been predicted that progression of atherosclerosis could be slowed and the 10-year risk of cardiac events would decline by ~50% in patients undergoing weight loss surgery. In keeping with these predictions, two studies have demonstrated reductions in 10-year total and cardiovascular mortality of approximately 50% in patients who had bariatric surgery.
Summary:
These encouraging data support the continued, and perhaps expanded, use of surgical procedures to induce weight loss in severely obese patients.
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