TCT-339 Partial Inferior Vena Cava Occlusion During Exercise in Heart Failure Patients Prevents Left Ventricular Pressure Overload, Improves Exercise Times, and Reduces Respiratory Rate: Mechanical “Balancing” of Biventricular Function as a Novel Therapy for Heart Failure Qualify of Life

Interatrial shunt devices off-load the left ventricle by shunting blood from the left to right atrium and are associated with improvements in exercise capacity and quality of life in heart failure patients. The authors hypothesize that controlling right ventricular stroke volume through partial