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[Myocardial revascularization through small left anterior minithoracotomy]
C A Teles1, L F Aguiar, A Petrizzo
1Escola Paulista de Medicina-UNIFESP e UNICOR, São Paulo.
Arquivos Brasileiros De Cardiologia
|February 1, 1997
Summary
Minimally invasive coronary artery bypass surgery using the left thoracic internal artery (LTIA) to the left anterior descending (LAD) artery showed excellent graft patency in 39 of 45 patients. This simplified approach offers promising results for select patients.
Area of Science:
- Cardiovascular Surgery
- Minimally Invasive Cardiac Surgery
- Coronary Artery Disease Treatment
Background:
- Coronary artery bypass grafting (CABG) is a standard treatment for coronary artery disease.
- Traditional CABG often involves median sternotomy and cardiopulmonary bypass, which can lead to increased morbidity.
- Minimally invasive techniques aim to reduce surgical trauma and improve patient recovery.
Purpose of the Study:
- To evaluate the efficacy and safety of myocardial revascularization using the left thoracic internal artery (LTIA) to the left anterior descending coronary artery (LAD).
- To assess the feasibility of performing this procedure via a small left anterior thoracotomy without cardiopulmonary bypass.
- To simplify the operative procedure for treating coronary artery insufficiency.
Main Methods:
- A total of 45 patients with lesions in the LAD or LAD and diagonal arteries underwent revascularization.
- The procedure involved anastomosing the LTIA to the LAD or diagonal arteries as composite grafts through a small left anterior thoracotomy.
- Postoperative assessment included arteriography and transthoracic echocardiography on the second postoperative day for 43 patients.
Main Results:
- Excellent graft patency was observed in 39 out of 45 patients (86.7%) within the study period.
- Six patients required reoperation due to obstruction or stenosis, all successfully managed with median sternotomy without complications.
- No significant flow was observed through intercostal arteries, indicating ligation is unnecessary, and transthoracic echocardiography showed good correlation with angiographic findings.
Conclusions:
- Minimally invasive LTIA to LAD revascularization via small left anterior thoracotomy is a viable option for selected patients with LAD and/or diagonal artery lesions.
- This technique simplifies the surgical procedure without compromising graft patency.
- Combined with complementary angioplasties for other coronary arteries, this approach may represent a future standard of care for coronary insufficiency.