Study Stopped
Logistical difficulties with contracting and with local dialysis unit policies preclueded successful recruiting/enrollment
Reducing Arrhythmia in Dialysis by Adjusting the Rx Electrolytes/Ultrafiltration, Study B
RADAR-B
RADAR-B: A Phase 2 Multi-center Study to Evaluate the Safety and Tolerability of Using Point-of-Care-Guided Manipulation of Ultrafiltration Rate to Prevent Hemodialysis-Associated Arrhythmias
2 other identifiers
interventional
N/A
1 country
1
Brief Summary
The purpose of this study is to test the feasibility of trials that change the dialysis ultrafiltration rate (UFR) by limiting the maximum rate and to estimate the extent to which limiting the ultrafiltration rate reduces the risk of abnormal heart rhythms in people with kidney failure who are being treated with chronic hemodialysis.
Trial Health
Trial Health Score
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Started Jul 2019
1 active site
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Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 26, 2018
CompletedFirst Posted
Study publicly available on registry
May 9, 2018
CompletedStudy Start
First participant enrolled
July 1, 2019
CompletedPrimary Completion
Last participant's last visit for primary outcome
February 1, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
February 1, 2021
CompletedJuly 22, 2021
July 1, 2021
1.6 years
April 26, 2018
July 15, 2021
Conditions
Keywords
Outcome Measures
Primary Outcomes (3)
Adherence with Proposed Interventions
Adherence will be assessed as the percent of sessions in which the mandated UFR is delivered.
2 years
Incidence of unscheduled hemodialysis or hospitalization for volume overload
The occurrence of unscheduled hemodialysis or ultrafiltration sessions needed to treat volume overload will be measured to assess the impact of the UFR intervention on the adequacy of volume removal.
4 months
Change in duration of clinically significant arrhythmia (CSA) per month
The total monthly duration of CSA (in minutes) will be utilized as the primary efficacy endpoint in comparing this pair of interventions (aggressive vs. conservative UF). In the event of incomplete follow-up, CSA duration will be indexed to follow-up time. CSA will be defined on the basis of arrhythmias likely to lead to sudden cardiac arrest (SCA) or serious morbidity and mortality and will include AF, asystole ≥3 seconds, bradycardia ≤40 beats per minute lasting ≥6 seconds, and sustained VT ≥130 beats per minute lasting ≥30 seconds. CSA's will be adjudicated by study electrophysiologists.
4 months
Secondary Outcomes (8)
Comparison of pre- and post-correction adherence
2 years
Association of individual interventions with atrial fibrillation (AF)
4 months
Association of individual interventions on potentially lethal arrhythmia
4 months
The occurrence of clinically significant arrhythmias requiring intervention
4 months
All-cause mortality
2 years
- +3 more secondary outcomes
Other Outcomes (4)
Identification of barriers to implementation
2 years
Association of dialysis day, shift, and site with CSA
2 years
Association of dialysis day, shift, and site with adherence
2 years
- +1 more other outcomes
Study Arms (2)
Restricted ultrafiltration rate (UFR)
EXPERIMENTALUFR ≤10 ml/kg/hr
Standard of Care/ Unrestricted UFR
EXPERIMENTALUFR as needed
Interventions
UFR's are limited to a maximum of 10 mL/kg/hr for the duration of the session. In order to prevent progressive volume overload and the need for additional hemodialysis sessions to manage volume gains in this scenario, subjects will crossover weekly between the restricted and unrestricted UFR interventions.
UFR's will be unlimited and prescribed according to the standard of care.
Eligibility Criteria
You may qualify if:
- Maintenance hemodialysis therapy for end-stage renal disease
- Age 18-85 years (subjects between 18-40 years old will be required to have at least one of the following: history of congestive failure, diabetes, coronary or peripheral vascular disease, or arrhythmia)
- \>30 days since dialysis initiation
- Ability to provide informed consent
- Interdialytic weight gain necessitating an UF rate of ≥13mL/kg/hour of dialysis to achieve the target post-dialysis weight in at least half of the dialysis sessions (≥6 sessions) in the month prior to enrollment
You may not qualify if:
- Expected survival \<6 months-to allow trial completion
- Renal transplant, transfer to home or peritoneal dialysis, or to non-study hemodialysis facility anticipated within 6 months
- Prisoners or cognitive disability preventing informed consent
- Pregnancy. A pregnancy test will be required for women of child bearing potential prior to enrollment. A pregnancy test will not be required for women past the age of child-bearing potential \>55 years old, women with a history of surgical sterilization, or for women \<55 years of age who have not had a menses within the past 12 months
- Skin condition, immune dysfunction, history of multiple infections or other condition which increases risk of local infection with ILR placement
- Bleeding disorder or anti-coagulation that cannot be reversed for ILR placement
- Existing pacemaker, implantable monitor or defibrillator which precludes device placement
- Chronic, persistent AF (defined as the presence of persistent AF on all available EKGs at time of recent screening)
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- NYU Langone Healthlead
- National Institutes of Health (NIH)collaborator
- Duke Universitycollaborator
- National Heart, Lung, and Blood Institute (NHLBI)collaborator
Study Sites (1)
Duke University Medical Center
Durham, North Carolina, 27710, United States
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
David Charytan, MD, MSc
NYU Langone Health
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- CROSSOVER
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 26, 2018
First Posted
May 9, 2018
Study Start
July 1, 2019
Primary Completion
February 1, 2021
Study Completion
February 1, 2021
Last Updated
July 22, 2021
Record last verified: 2021-07