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Eur J Cardiothorac Surg 2003;23:657-664
© 2003 Elsevier Science NL
a Department of Cardiac Surgery, University of Brescia Medical School, Brescia, Italy
b Department of Cardiology, University of Brescia Medical School, Brescia, Italy
Received 25 September 2002; received in revised form 20 January 2003; accepted 3 February 2003.
* Corresponding author. UDA Cardiochirurgia, Spedali Civili di Brescia, P.le Spedali Civili, 1, 25123 Brescia, Italy. Tel.: +39-30-399-6401; fax: +39-30-399-6096
e-mail: munerett{at}master.cci.unibs.it
Objective: The aim of the study was to evaluate the mid-term results of total arterial myocardial revascularization (TAMR) with composite grafts in patients older than 70 years when compared to standard CABG technique, since the usefulness of TAMR in the elderly has not been demonstrated yet. Methods: A prospective randomized study was designed with the following end-points: post-operative complications, death, recurrence of angina, graft occlusion, any cardiac event and reinterventions. One hundred and eighty-eight patients older than 70 years were enrolled and assigned to Group 1(G1)=94 pts, for total arterial revascularization or Group 2(G2)=94 pts, for standard CABG (LITA on LAD plus additional saphenous veins). The groups were comparable in terms of pre-operative characteristics and Euroscore (mean: G1=8.4 vs. G2=8.2). Results: No differences between the groups were observed in terms of mean number of grafted vessels (G1=2.1 vs. G2=2.3), mean aortic cross-clamping time (G1=34±8 vs. G2=33±6 min), mechanical ventilation time (G1=23±4 vs. G2=22±4 hr), ICU stay (G1=40±10 vs. G2=39±9 hr), post-operative complications and hospital mortality (G1=5.3% vs. G2=4.2%). At a mean follow-up of 12±4 months, cumulative incidence of angina recurrence was 2.1% in G1 vs. 11% in G2 (P=0.021). Angiographic evaluation showed 98.2% arterial patency in G1 vs. 86% saphenous vein graft patency in G2 (P<0.001). Multivariate analysis identified conventional CABG surgery as independent predictor of angina recurrence, graft occlusion and late cardiac events. Conclusions: Total arterial revascularization with composite grafts proved to be a safe and effective procedure also in the elderly. Composite arterial grafts provided superior clinical outcome with a lower rate of angina recurrence, graft occlusion and late cardiac events when compared to conventional CABG strategy.
Key Words: CABG surgery • Arterial conduits • Composite grafts • Elderly patients
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