HeRO® Graft: Patient Testimonials Hear from HeRO Graft patients about their stories and their successes. Hear Kaaren explain the benefits of receiving a HeRO Graft and how being catheter-free has changed her life. Learn how HeRO Graft improved Stewart’s numbers and shortened his dialysis time. Now that Stewart is a HeRO Graft patient, he no longer has to fight infections from catheters. Kay and Katie: A Patient’s Story of Receiving a HeRO Graft