Vitamin K for kidney transplant organ recipients: investigating vessel stiffness (ViKTORIES): study rationale and protocol of a randomised controlled trial

Autor: Jennifer Susan Lees, Miles D Witham, Alan G Jardine, Patrick B Mark, Giles Roditi, Kenneth Mangion, Elaine Rutherford, Rosemary Woodward, Tracey Hopkins, Katriona Brooksbank
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Open Heart, Vol 7, Iss 2 (2020)
Druh dokumentu: article
ISSN: 2053-3624
DOI: 10.1136/openhrt-2019-001070
Popis: Background Renal transplant recipients (RTRs) exhibit increased vascular stiffness and calcification; these parameters are associated with increased cardiovascular risk. Activity of endogenous calcification inhibitors such as matrix gla protein (MGP) is dependent on vitamin K. RTRs commonly have subclinical vitamin K deficiency. The Vitamin K in kidney Transplant Organ Recipients: Investigating vEssel Stiffness (ViKTORIES) study assesses whether vitamin K supplementation reduces vascular stiffness and calcification in a diverse population of RTR.Methods and analysis ViKTORIES (ISRCTN22012044) is a single-centre, phase II, parallel-group, randomised, double-blind, placebo-controlled trial of the effect of vitamin K supplementation in 90 prevalent RTR. Participants are eligible if they have a functioning renal transplant for >1 year. Those on warfarin, with atrial fibrillation, estimated glomerular filtration rate
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