[Show abstract][Hide abstract] ABSTRACT: BACKGROUND: In general, surgeries currently tend to be less invasive and cardiac surgery has started to follow this trend. OBJECTIVE:To evaluate the evolution of one hundred patients undergoing minimally-invasive coronary artery bypass grafting. METHODS: Access to the heart was attained through a small; 6-cm thoracotomy, located in the 4th left intercostal space, starting at the nipple. Through the same intercostal space, 3 cm after the primary incision, a 6.5-mm optical device was inserted at 30º. Where the saphenous vein was used, the pericardium was opened above the aorta and the latter was partially clamped with a systolic pressure of 80 mmHg, with the proximal anastomosis being carried out in the conventional manner. The distal anastomoses were carried out in the conventional manner. The procedure was performed off-pump using single lung ventilation. RESULTS: The mean age was 63.9 ± 10.66 years. Sixty-eight (68%) patients were males. Fifty-three (53%) were in functional class III or IV. Left ventricular function was normal in fifty-three (53%) patients. Forty-two (42%) had undergone previous angioplasty. A total of 153 anastomoses were performed, ranging from 1 to 3. The average ventilation time was 4.06 ± 4.08 hours. Seventeen (17%) patients had atrial fibrillation and eight (8%) had pneumonia. There were two deaths in this series. CONCLUSION: Revascularization was safe with low mortality and morbidity. With the advent of new devices, this surgery may have a greater applicability.
[Show abstract][Hide abstract] ABSTRACT: To evaluate the influence of the technique used in the dissection of thoracic arteries in the evolution of diabetic patients submitted to OPCAB.
Seventy diabetic patients submitted to OPCAB using bilateral thoracic arteries were evaluated. In Group A, thoracic arteries were dissected as a pedicle, while in Group B they were skeletonized.
The mean age of patients in Group A was 52.14 +/- 7.35 years old versus 55.71 +/- 8.1 years for Group B (p=0.057). In Group A, six patients (17.1%) were insulin dependent against nine (25.7%) in Group B (p = 0.561). The EUROSCORE was 3.97 +/- 2.49 for Group A opposed to 4.14 +/- 3.06 for Group B (p = 0.879). The number of distal anastomoses in Group A was 3 +/- 0.77 versus 3.03 +/- 0.89 in Group B (p = 0.981). Three patients (8.57%) from Group A presented with mediastinitis. Insulin dependence was the only significant risk factor (p=0.008) for mediastinitis. In this group the use of skeletonized internal thoracic arteries significantly decreased the incidence of mediastinitis (p = 0.044). Conclusion: The incidence of mediastinitis was lower in the group for which mammary arteries were dissected using skeletonization. Among insulin-dependent diabetics, 50% of the patients from the group in which the pedicled internal thoracic artery was utilized presented with mediastinitis; the utilization of skeletonized internal thoracic arteries significantly decreases the incidence of mediastinitis.
Brazilian Journal of Cardiovascular Surgery 10/2008; 23(3):351-7. DOI:10.1590/S0102-76382008000300011 · 0.55 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: To assess off-pump myocardial revascularization in patients with significant left ventricular dysfunction.
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.
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.
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.
[Show abstract][Hide abstract] ABSTRACT: We report the cases of 2 female patients with Takayasu's arteritis referred to our service with lesions affecting the descending thoracic aorta and great vessels. One of the patients had a critical obstructive lesion in the left coronary ostium. Both patients underwent surgery without extracorporeal circulation, with full heparinization and autotransfusion.
Arquivos Brasileiros de Cardiologia 09/2005; 85(2):124-7. · 1.02 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Results Arterial hypertension was present in 174 (90%), dyslipidemia in 115 (59%), smoking in 89 (46%), and diabetes in 57 (29%). Ninety-six (49.7%) patients had had a previous myocardial infarc- tion, 53 of whom (27.4%) had experienced an acute ischemic event in a period < 30 days after surgery. Critical obstructive lesions in 3 or more coronary vessels were present in 156 (80.95%) patients, while 30 (15%) patients had an important obstruction of the left main coronary artery, and 30 (15%) patients had an ejection fraction < 30%. The score obtained according to the EUROSCORE ranged from 3 to 18, with an expected mortality rate for the group of 7.54±2.69%. The total number of distal anastomoses was 639. Seven (3.62%) patients died, 3 due to bronchopneumonia, 1 due to mediastinitis, 1 due to metabolic causes, 1 due to cardiogenic shock, and another died suddenly after refixation of a sternal dehiscence. Reoperation due to blee- ding, orotracheal reintubation, and prolonged mechanical ventila- tion were factors associated with an increase in mortality.
Arquivos Brasileiros de Cardiologia 02/2005; 84(1):34-7. · 1.02 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Objective: To evaluate the immediate postoperative results of off-pump myocardium revascularization surgery by analyzing complications and mortality. Method: A total of 1440 patients were submitted to off- pump myocardium revascularization. The surgical technique consisted in proximal occlusion of the approached artery, the application of the LIMA graft in the posterior pericardial deflection and stabilization of the target artery with a suction stabilizer. The distal anastomoses were performed first. Results: Among the patients evaluated, 924 were male and 516 were female, with a mean age of 63.12 ± 8.76 years. The ejection fraction was normal in 749 patients, 740 (51.4%) patients had suffered previous myocardial infarction and 687 (47.6%) patients were in functional class III or IV. The mean EuroSCORE was 4.93 ± 3.32. The mean number of distal anastomoses was 3.12 ± 1.23 per patient. A total of 1173 (81.5%) patients remained less than 12 hours on mechanical ventilation and among these, 888 (61.7%) remained for less than six hours. The stay in the ICU was of one night for 330 (22.8%) patients, for two nights for 930 (64.6%) patients and 182 (12.4%) patients remained for three or more nights. In regards to complications, three (0.2%) patients presented with renal insufficiency, six (0.4%) patients suffered strokes, nineteen (1.3%) patients were reoperated for bleeding, nineteen (1.3%) patients had mediastinitis, eighteen (1.25%) patients suffered severe myocardial infarction and 212 (14.7%) presented atrial fibrillation. There were 50 (3.5%) deaths, 29 (2.5%) of them being among the 1148 patients operated electively, 9 (4.7%) among 190 patients submitted to coronary re-operation and 12 (11.7%) among 102 patients undergoing emergency operations. Conclusion: With the evolution of biomedical technological, all the vessels of the heart are now approached. These data suggest that the operation for myocardial revascularization is safe and efficient. It can be applied to all patients who need coronary surgery, with low rates of complication and mortality.
Brazilian Journal of Cardiovascular Surgery 01/2005; 20(1). DOI:10.1590/S1678-97412005000100012 · 0.55 Impact Factor