NCT05959252

Brief Summary

The goal of this open label randomised clinical trial is to compare Bivalirudin versus Heparin for anticoagulation in patients requiring extracorporeal membrane oxygenation support. The main question it aims to answer are include the ability to maintain anticoagulation within defined therapeutic range, bleeding and thrombotic complications and a comparison of the total cost of anticoagulation care. Participants will be randomised to either anticoagulation with Bivalirudin or anticoagulation with Unfractionated Heparin.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
80

participants targeted

Target at P50-P75 for phase_2

Timeline
1mo left

Started May 2024

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress96%
May 2024Sep 2026

First Submitted

Initial submission to the registry

July 2, 2023

Completed
23 days until next milestone

First Posted

Study publicly available on registry

July 25, 2023

Completed
9 months until next milestone

Study Start

First participant enrolled

May 1, 2024

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2026

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2026

Expected
Last Updated

May 8, 2026

Status Verified

May 1, 2026

Enrollment Period

2.1 years

First QC Date

July 2, 2023

Last Update Submit

May 7, 2026

Conditions

Keywords

ECMOBivalirudinHeparinExtracorporeal membrane oxygenation

Outcome Measures

Primary Outcomes (1)

  • Time in therapeutic range

    Proportion of monitoring samples within therapeutic range

    30 days

Secondary Outcomes (14)

  • Enrolment rate

    30 days

  • Reasons for non-enrolment

    30 days

  • Crossover between arms

    30 days

  • Circuit changes

    30 days

  • Daily mean aPTT and anti-Xa

    30 days

  • +9 more secondary outcomes

Study Arms (2)

Bivalirudin

ACTIVE COMPARATOR

Bivalirudin protocol with target activated thromboplastin time (aPTT) of 50-70 seconds

Drug: Bivalirudin

Unfractionated Heparin

ACTIVE COMPARATOR

Unfractionated heparin protocol with target anti-Xa of 0.3-0.5 IU/mL

Drug: Unfractionated heparin

Interventions

Unfractionated Heparin protocol with target anti-Xa of 0.3-0.5 IU/mL

Also known as: Heparin
Unfractionated Heparin

Bivalirudin protocol with target aPTT 50-70 seconds

Bivalirudin

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patients receiving ECMO
  • Age: 18 years or older
  • Ability to randomise the patient within 4 hours of ECMO support initiation

You may not qualify if:

  • Post-cardiotomy ECMO patients
  • Contraindication to heparin or bivalirudin at time of randomisation e.g., active bleeding
  • Heparin induced thrombotic thrombocytopenia syndrome
  • Where the patient is expected to be disconnected from ECMO in the next day after cannulation.
  • Limitations of care put in place either through patient wishes or the treating medical teams
  • Other reason where the treating physician deems the study is not in the patient's best interest
  • Patients who are suspected or confirmed to be pregnant
  • Inherited bleeding or thrombotic disorders, Systemic Lupus Erythematosus patients

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Royal Prince Alfred Hospital

Sydney, New South Wales, 2050, Australia

RECRUITING

MeSH Terms

Interventions

Heparinbivalirudin

Intervention Hierarchy (Ancestors)

GlycosaminoglycansPolysaccharidesCarbohydrates

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER GOV
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 2, 2023

First Posted

July 25, 2023

Study Start

May 1, 2024

Primary Completion

June 1, 2026

Study Completion (Estimated)

September 1, 2026

Last Updated

May 8, 2026

Record last verified: 2026-05

Locations