Study protocol for Vascular Access outcome measure for function: a vaLidation study In hemoDialysis (VALID) : A multi-center, multinational validation study to assess the accuracy and feasibility of measuring vascular access function in clinical practice

Andrea K Viecelli*, Armando Teixeira-Pinto, Andrea Valks, Richard Baer, Roy Cherian, Pietro E Cippà, Jonathan C Craig, Ranil DeSilva, Allison Jaure, David W Johnson, Charani Kiriwandeniya, Pascal Kopperschmidt, Wen-J Liu, Timmy Lee, Charmaine Lok, Krishan Madhan, Alistair R Mallard, Veronica Oliver, Kevan R Polkinghorne, Rob R QuinnDonna Reidlinger, Matthew Roberts, Bénédicte Sautenet, Lai Seong Hooi, Rob Smith, Maarten Snoeijs, Jan Tordoir, Tushar J Vachharajani, Raymond Vanholder, Liza A Vergara, Martin Wilkie, Bing Yang, Theodore H Yuo, Li Zou, Carmel M Hawley, VALID Investigator Team

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: A functioning vascular access (VA) is crucial to providing adequate hemodialysis (HD) and considered a critically important outcome by patients and healthcare professionals. A validated, patient-important outcome measure for VA function that can be easily measured in research and practice to harvest reliable and relevant evidence for informing patient-centered HD care is lacking. Vascular Access outcome measure for function: a vaLidation study In hemoDialysis (VALID) aims to assess the accuracy and feasibility of measuring a core outcome for VA function established by the international Standardized Outcomes in Nephrology (SONG) initiative.

METHODS: VALID is a prospective, multi-center, multinational validation study that will assess the accuracy and feasibility of measuring VA function, defined as the need for interventions to enable and maintain the use of a VA for HD. The primary objective is to determine whether VA function can be measured accurately by clinical staff as part of routine clinical practice (Assessor 1) compared to the reference standard of documented VA procedures collected by a VA expert (Assessor 2) during a 6-month follow-up period. Secondary outcomes include feasibility and acceptability of measuring VA function and the time to, rate of, and type of VA interventions. An estimated 612 participants will be recruited from approximately 10 dialysis units of different size, type (home-, in-center and satellite), governance (private versus public), and location (rural versus urban) across Australia, Canada, Europe, and Malaysia. Validity will be measured by the sensitivity and specificity of the data acquisition process. The sensitivity corresponds to the proportion of correctly identified interventions by Assessor 1, among the interventions identified by Assessor 2 (reference standard). The feasibility of measuring VA function will be assessed by the average data collection time, data completeness, feasibility questionnaires and semi-structured interviews on key feasibility aspects with the assessors.

DISCUSSION: Accuracy, acceptability, and feasibility of measuring VA function as part of routine clinical practice are required to facilitate global implementation of this core outcome across all HD trials. Global use of a standardized, patient-centered outcome measure for VA function in HD research will enhance the consistency and relevance of trial evidence to guide patient-centered care.

TRIAL REGISTRATION: Clinicaltrials.gov: NCT03969225. Registered on 31st May 2019.

Original languageEnglish
Article number372
Number of pages12
JournalBmc Nephrology
Volume23
Issue number1
DOIs
Publication statusPublished - 19 Nov 2022

Keywords

  • Humans
  • Feasibility Studies
  • Multicenter Studies as Topic
  • Outcome Assessment, Health Care
  • Prospective Studies
  • Renal Dialysis/methods
  • Surveys and Questionnaires

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