CClinicalTrials.gg
CompletedNCT04537325Updated Mar 19, 2021

Prevention of Acute Kidney Injury After Transcatheter Aortic Valve Implantation

An interventional study of RenalGuard system in Acute Kidney Injury, sponsored by Universitätsklinikum Hamburg-Eppendorf. Completed at 1 site in Germany. Open to participants aged 18 Years to 99 Years. Per ClinicalTrials.gov, last updated 2021-03-19.

Sponsored by Universitätsklinikum Hamburg-Eppendorf · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 3 years 7 months after the study started (first participant enrolled Jan 2017, registered Aug 2020).
Phase
Not applicable
Study type
Interventional
Enrollment
98
Allocation
Randomized
Ages
18 Years to 99 Years
Sex
All
01

Study summary

Randomized controlled, single-center trial randomizing patients with chronic kidney disease and symptomatic severe aortic valve stenosis undergoing transcatheter aortic valve implantation (TAVI). Patients are randomized in a 1:1 ratio to periprocedural intravenous hydration matched to urine output using the RenalGuard system and to standard hydration. The purpose of the study is to test, wether the controlled intravenous hydration with the RenalGuard system is superior to standard hydration to prevent acute kidney injury after TAVI.

Read the detailed description

Acute kidney injury (AKI) after transcatheter aortic valve implantation (TAVI) is associated with worse outcome. The RenalGuard system was developed to prevent AKI by a controlled furosemide-induced diuresis with matched isotonic intravenous hydration. It is based on the theory, that a high urinary output prevents contrast media-induced nephropathy (CIN).

The present study is a prospective, randomized trial to investigate wether a matched intravenous hydration using the RenalGuard system is superior to standard pre- and postprocedural intravenous hydration in patients with severe aortic valve stenosis and chronic kidney disease undergoing TAVI. Primary endpoint is the occurrence of AKI after TAVI.

02

Conditions studied

  • Acute Kidney Injury

Keywords

  • Transcatheter aortic valve stenosis
  • Chronic kidney disease
  • Acute kidney injury
03

In context

Acute Kidney Injury

1,594 studies on the registry are indexed under Acute Kidney Injury; 370 are open to participants now.

This study's enrollment of 98 is close to the median of 100 across 763 interventional studies indexed under Acute Kidney Injury.

Browse Acute Kidney Injury studies →

Lead sponsor

Universitätsklinikum Hamburg-Eppendorf is the lead sponsor of 403 studies on the registry; 83 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 99 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Symptomatic severe aortic valve stenosis undergoing transcatheter aortic valve implantation
  • Chronic kidney disease (baseline glomerular filtration rate ≤ 60 ml/min)
  • Written informed consent

Exclusion criteria

Exclusion Criteria:

  • Hemodynamic instability
  • Dialysis-dependent chronic kidney injury
  • Emergency transcatheter aortic valve stenosis
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
98 participants (actual)

Study arms

  • Active comparator
    RenalGuard group

    Device: RenalGuard system

  • No intervention
    Control group

Interventions

  • DeviceRenalGuard system

    Periprocedural intravenous hydration matched to urinary output.

06

What researchers measure

Primary outcomes

  1. Acute kidney injury

    Increase of serum-creatinine of 0,3 mg/dl in pre-procedural serum-creatinine within 7 days after Transcatheter aortic valve implantation

    Time frame: Within 7 days after Transcatheter aortic valve implantation

07

Study locations

1 site
  • University Medical Center Hamburg-Eppendorf
    Hamburg, 20246, Germany
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 19, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04537325
Lead sponsor
Universitätsklinikum Hamburg-Eppendorf
Responsible party
Sponsor
First posted
Sep 3, 2020
Start date
Jan 20, 2017
Primary completion
Aug 16, 2018
Completion
Aug 31, 2020
Last update
Mar 19, 2021

Study contacts

Ulrich Schäfer, MD
principal investigator · Universitätsklinikum Hamburg-Eppendorf

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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