Comparação da perviedade entre artéria radial e veia safena em pacientes em pós-operatório de cirurgia de revascularização miocárdica com retorno dos sintomasComparison of patency between radial artery and saphenous vein in a coronary artery bypass grafting post operative with return of the symptoms 219HORTMANN, HC ET AL -Comparison of patency between radial artery and saphenous vein in a coronary artery bypass grafting post operative with return of the symptoms Bras Cir Cardiovasc 2010; 25(2): 218-223 Rev