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The Reducing Adverse Outcomes in Dialysis by Adjusting the pRescription for Dialysate Potassium Trial

The Reducing Adverse Outcomes in Dialysis by Adjusting the pRescription for Dialysate Potassium Trial (RADAR-K): A Randomized, Controlled, Pilot Trial Comparing Usual Care to a Precision Approach to Dialysis Potassium Prescribing.

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07051447
Acronym
RADAR-K
Enrollment
120
Registered
2025-07-04
Start date
2025-08-01
Completion date
2029-08-01
Last updated
2025-07-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

End Stage Kidney Disease

Brief summary

This will be a randomized controlled pilot trial comparing usual care to a precision approach to dialysis potassium prescribing. The precision approach will incorporate point of care testing of blood potassium concentration prior to each dialysis session and adjustment of the dialysate K prescription with a blood-dialysate K gradient minimization strategy (PKRxHD).

Interventions

OTHERPKRxHD

The precision approach will incorporate point of care testing of blood potassium concentration prior to each dialysis session and adjustment of the dialysate K prescription with a blood-dialysate K gradient minimization strategy (PKRxHD).

PROCEDUREDialysis

Standard of care dialysis.

Sponsors

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
CollaboratorNIH
NYU Langone Health
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Undergoing in-center, 3x/weekly HD for treatment of end-stage kidney disease (ESKD) for at least 90 days * Age at least 21 years * Prescribed HD time up to 15 hours/ week

Exclusion criteria

* Incarcerated * Life expectancy of 1 year or less * Kidney transplant, transition to home dialysis, or transfer to non-participating HD unit anticipated within 6 months or less * Cognitive condition that precludes consent * Severe anemia (hemoglobin \< 8.0 g/dL) within 30 days * K concentration of 7.0 mEq/L or more within 60 days * Pregnant women * Women of childbearing potential actively trying to conceive unwilling to use contraception * Participation in other interventional studies within 30 days prior to enrollment

Design outcomes

Primary

MeasureTime frameDescription
Intervention AdherenceUp to Week 24Measured as the proportion of hemodialysis (HD) treatments in the experimental arm completed per protocol with both pre-HD point of care testing and appropriate adjustment of the dialysate prescription.
Recruitment FeasibilityBaselineMeasured as the proportion of eligible patients enrolled successfully.
Incidence Rate of Pre-HD HyperkalemiaBaselineHyperkalemia is defined as K≥ 6.4 mEq/L.
Post-HD Recovery TimeUp to Week 24Measured as the average time to recovery following each HD session.

Secondary

MeasureTime frameDescription
Incidence Rate of Moderate HyperkalemiaUp to Week 24Hyperkalemia is defined as K≥ 3.0 mEq/L.
Incidence Rate of Peri-Dialytic CrampingUp to Week 24
Incidence Rate of Post-HD Hyperkalemia Incidence RateUp to Week 24Hyperkalemia is defined as K≥ 6.4 mEq/L.
Incidence Rate of Intradialytic HypotensionUp to Week 24Intradialytic hypotension will be defined as the proportion of HD sessions with intradialytic systolic blood pressure\<90 mmHg, as this definition best captures associations with mortality according to current guidelines.

Contacts

Primary ContactDavid Charytan, MD
David.Charytan@nyulangone.org212-263-0705
Backup ContactZoe Rimler
Zoe.Rimler@nyulangone.org212-263-2544

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026