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Ann Thorac Surg 2000;70:74-78
© 2000 The Society of Thoracic Surgeons

Original articles: Cardiovascular

The LAST operation is safe and effective: MIDCABG clinical and angiographic evaluation

Alberto Repossini, MDa, Stefano Moriggia, MDa, Vincenzo Cianci, MDa, Oberdan Parodi, MDa, Paolo Sganzerla, MDa, Giorgio Baldrighi, MDa, Franco Bortone, MDa, Vincenzo Arena, MDa

a Cardiovascular Department, Cliniche Gavazzeni, Bergamo, Italy

Address reprint requests to Dr Repossini, Dipartimento Cardiovascolare, Cliniche Gavazzeni, Via Gavazzeni 21, 24100 Bergamo, Italy
e-mail: arepossini{at}clinichegavazzeni.bg.it

Background. The aim of this study was to prospectively evaluate the angiographic results of a cohort of consecutive patients who underwent minimally invasive coronary artery revascularization.

Methods. From May 1997 to December 1998, 150 consecutive patients underwent left internal mammary artery to left anterior descending artery anastomosis through a left minithoracotomy on a beating heart in the Cardiovascular Department of Cliniche Gavazzeni, Bergamo, Italy. The mean age was 61.6 years (range, 36 to 84 years); 121 patients (81%) were men. Isolated left anterior descending artery disease was present in 74 patients.

Results. In-hospital patency was observed in 100% of the 149 angiographically controlled patients with no anomalies in 99.3% of the anastomoses. Anastomosis was performed on a diseased tract of the target vessel in 3 patients and a stenosis of the target vessel beyond the anastomosis was documented in 3 patients. In one case early angiographic control was not performed due to death of the patient on the 1st postoperative day. The morbidity included postoperative bleeding that required reopening (3.3%) and intraoperative myocardial infarction (2%).

Conclusions. A left internal mammary artery to left anterior descending artery anastomosis on a beating heart through a left minithoracotomy is an alternative approach to myocardial revascularization. Surgical invasiveness is limited, cardiopulmonary bypass risks are avoided, and the procedure is safe and effective. In our consecutive series, postoperative angiographic controls demonstrated graft patency in all patients and very high quality anastomoses. Midterm clinical follow-up (14 months) appears favorable.






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