Vascular Complications After Kidney Transplantation

* To determine the incidence of arterial inflow problems and venous outflow problems as causes of impaired renal function and/or treatment-resistant hypertension after kidney transplantation, when all kidney-transplant recipients in Denmark are evaluated according to uniform, well-defined clinical criteria. * To investigate the efficacy and safety of catheter-based balloon treatment (percutaneous transluminal angioplasty, PTA) for these vascular complications, of which transplant renal artery stenosis is by far the most common. * To assess whether novel imaging and functional diagnostic methods can predict treatment response.

NCT Number	NCT07531966
Lead Sponsor	University of Aarhus Collaborators: Aarhus University Hospital, Rigshospitalet, Denmark, Odense University Hospital, Aalborg University Hospital, Gødstrup Hospital, Holbaek Sygehus, Amsterdam UMC, The Augustinus Foundation, Denmark.
Conditions	Kidney Transplant Recipient, Kidney Transplant; Complications, Transplant Renal Artery Stenosis, Renovascular Disease, Renal Transplant Graft Failure, Renovascular Hypertension, Heart Failure
Enrollment	60 participants
Start Date	2026-05-22
Primary Completion	2031-03-31 (estimated)
Study Completion	2031-06-01 (estimated)
Updated on ClinicalTrials.gov	2026-05-27