Experience with an adjustable pulmonary artery banding device in two cases:: Initial success -: Midterm failure

Retraining of the left ventricle in congenitally corrected TGA or after Senning or Mustard operation is necessary when right-ventricular failure is developing and an arterial switch operation is indicated. As these hearts have little tolerance of marginal overbanding, a long-term adjustable pulmonary artery banding device would lower stress and risk of training. Although the inserted device (Osypka(TM)) allowed convenient intraoperative pressure ratio adjustment, mid-term adjustment failed due to dysfunction of the system.