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Off-pump total myocardial revascularization in patients with left ventricular dysfunction
Rodrigo Milani1, Brofman Paulo, José Augusto Moutinho
1Serviço de Cirurgia Cardiovascular, Santa Casa de Misericórdia, PUC, Curitiba, PR, Brasil. grmilani@cardiol.br
Insights
Off-pump myocardial revascularization is a safe and effective treatment for patients with left ventricular dysfunction. This technique offers a viable alternative for high-risk individuals, demonstrating better outcomes than predicted by EuroSCORE.
Area of Science:
- Cardiovascular Surgery
- Cardiac Surgery
- Minimally Invasive Cardiac Surgery
Background:
- Significant left ventricular dysfunction poses a high risk for traditional cardiac surgery.
- Off-pump techniques aim to reduce complications associated with cardiopulmonary bypass.
- Assessing novel surgical approaches is crucial for improving patient outcomes.
Purpose of the Study:
- To evaluate the safety and efficacy of off-pump myocardial revascularization.
- To assess outcomes in patients with ejection fraction < 35%.
- To determine the suitability of this technique for high-risk surgical candidates.
Main Methods:
- Myocardial revascularization was performed without extracorporeal circulation in 405 patients.
- Procedures utilized a suction stabilizer and the LIMA stitch technique.
- Distal anastomoses were prioritized, with a mean of 3.03 anastomoses per patient.
Main Results:
- The study included 405 patients with a mean ejection fraction of 27.2%.
- Complication rates were low, including 0.49% renal failure and 1.2% acute myocardial infarction.
- Mortality was 4.4%, with outcomes superior to predicted EuroSCORE values.
Conclusions:
- Off-pump myocardial revascularization is a safe and effective option for patients with left ventricular dysfunction.
- This technique serves as a valuable alternative for high-risk surgical candidates.
- Observed results surpassed expectations based on pre-operative risk scores.
Objective:
To assess off-pump myocardial revascularization in patients with significant left ventricular dysfunction.
Methods:
Four hundred and five patients with an ejection fraction less than 35% underwent myocardial revascularization without extracorporeal circulation. The procedure was performed with the aid of a suction stabilizer and the LIMA stitch. The distal anastomoses were performed first.
Results:
A total of 405 patients were evaluated whose mean age was 63.4 +/- 9.78 years. Two hundred and seventy-nine patients were men (68.8%). With regard to risk factors, 347 patients were hypertensive, 194 were smokers, 202 were dyslipidemic, and 134 had diabetes. Two hundred and sixty patients were classified as NYHA functional class III and IV. Twenty patients suffered from chronic renal disease and were under dialysis. Fifty-one underwent emergency surgery, and 33 had been previously operated on. The mean ejection fraction was 27.2 +/- 3.54%. The mean EuroSCORE was 8.46 +/- 4.41. The mean number of anastomoses performed was 3.03 +/- 1.54 per patient. Forty-nine patients (12%) needed an intra-aortic balloon inserted after induction of anesthesia, whereas 73 (18%) needed inotropic support during the perioperative period. As to complications, 2 patients (0.49%) had renal failure, 2 had mediastinitis (0.49%), 7 (1.7%) needed to be reoperated because of bleeding, 5 patients (1.2%) suffered acute myocardial infarction, and 70 patients (17.3%) experienced atrial fibrillation. Eighteen (4.4%) patients died.
Conclusion:
Based on the data above, we concluded that myocardial revascularization without extracorporeal circulation in patients with left ventricular dysfunction is a safe and effective technique, and an alternative for high-risk patients. Results obtained were better than those predicted by EuroSCORE.
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