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Figure 3: Balloon occlusion mimics pulmonary artery banding. A pigtail catheter advanced through a transseptal Mullins sheath monitored left atrial pressures, and the side arm of the Mullins sheath monitored right atrial pressures. A 12 mm Tyshak II balloon advanced through another Mullins sheath into the right pulmonary artery with the tip of Mullins sheath in the left ventricle to monitor ventricular pressures. Another 12 mm Tyshak II balloon was advanced to the origin of the left pulmonary artery. An arterial sheath with pigtail catheter measured right ventricular and aortic pressures

Figure 3: Balloon occlusion mimics pulmonary artery banding. A pigtail catheter advanced through a transseptal Mullins sheath monitored left atrial pressures, and the side arm of the Mullins sheath monitored right atrial pressures. A 12 mm Tyshak II balloon advanced through another Mullins sheath into the right pulmonary artery with the tip of Mullins sheath in the left ventricle to monitor ventricular pressures. Another 12 mm Tyshak II balloon was advanced to the origin of the left pulmonary artery. An arterial sheath with pigtail catheter measured right ventricular and aortic pressures