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Early complications and long-term survival in severely obese coronary bypass patients
1Division of Thoracic and Cardiovascular Surgery, St. Joseph Mercy Hospital, Pontiac, Michigan, USA.
Insights
Severely obese patients undergoing coronary artery bypass surgery (CABG) experience high short-term morbidity but favorable long-term survival. Aggressive cardiac rehabilitation did not significantly alter weight or risk factors post-surgery.
Area of Science:
- Cardiology
- Bariatric Medicine
- Surgical Outcomes
Background:
- Severely obese patients with coronary artery disease (CAD) present unique challenges for surgical intervention.
- Understanding the morbidity and long-term prognosis after coronary artery bypass surgery (CABG) in this population is crucial.
Purpose of the Study:
- To describe the short-term morbidity associated with CABG in severely obese patients.
- To evaluate the effect of aggressive cardiac rehabilitation on the long-term prognosis of these patients.
Main Methods:
- An inception cohort of 28 severely obese patients with three-vessel CAD was studied.
- Patients underwent CABG followed by aggressive cardiac rehabilitation programs.
- Data collected included perioperative outcomes, risk factors, and long-term follow-up (average 51 months).
Main Results:
- Despite high short-term morbidity, long-term function and survival in severely obese CABG patients were comparable to average patients.
- Aggressive behavior modification did not significantly alter postoperative weight or risk profiles.
- Patients remained at risk for repeat CABG and obesity-related complications.
Conclusions:
- Coronary artery bypass surgery in severely obese patients yields favorable long-term outcomes despite significant perioperative morbidity.
- Aggressive cardiac rehabilitation alone is insufficient to mitigate the long-term risks associated with obesity in this cohort.
- Further strategies are needed to manage weight and risk factors effectively post-CABG.
Abstract:
Our objective was to describe the short-term morbidity of coronary artery bypass operations and the effect of surgery plus aggressive cardiac rehabilitation on the long-term prognosis of severely obese patients with coronary artery disease. We investigated an inception cohort of 28 consecutive severely obese patients with three-vessel coronary disease followed on average for 51 months. The patients' age, preoperative and postoperative weight, risk factors, and cholesterol were measured. We performed coronary artery bypass surgery, then began aggressive cardiac rehabilitation programs. We recorded intraoperative data, perioperative deaths, complications, readmissions, and lengths of stay. Also, New York Heart classifications and use of anti-anginal or cholesterol-lowering medications were noted. All patients were followed up. Despite high morbidity, long-term function and survival of severely obese CABG patients compares favorably with that of average patients. However, aggressive behavior modification fails to alter their postoperative weight or risk profile, placing them at risk for both second CABG procedures and continued obesity-related disease occurrences.