Pulmonary allograft stenosis after Ross procedure: risk factors

The Ross procedure has been known as a good method for aortic valve replacement. Pulmonary allograft postoperative stenosis subsequent to the Ross procedure has been noted as an important disadvantage of this technique, risk factors related to this complication are not clearly recognized. In this study we evaluate the risk factors of pulmonary allograft stenosis after Ross procedure. This retrospective cohort study was carried out on 42 patients who underwent the Ross procedure. Left ventricular outflow tract obstruction was repaired using pulmonary allografts 22.7±2.5 mm in diameter. Echocardiographic and clinical examinations were performed for all patients at six and 12 months after surgery.