Impact of Right Ventricular Stiffness on Discordance between Hemodynamic Parameter and Regurgitant Volume in Patients with Pulmonary Regurgitation

¹Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan; ²Diagnostic Center for Sonography, Hokkaido University Hospital, Sapporo, Japan; ³Division of Clinical Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan; ⁴Faculty of Health Sciences, Hokkaido University, Sapporo, Japan; ⁵Department of Pediatrics, Graduate School of Medicine, Hokkaido University, Sapporo, Japan; ⁶Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan.