NCT04075240

Brief Summary

Consented patients undergoing elective total hip and total knee arthroplasty will be randomized to receive either aspirin alone or aspirin and rivaroxaban for prevention of venous thromboembolism.

Trial Health

57
Monitor

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
5,400

participants targeted

Target at P75+ for phase_3

Timeline
Completed

Started Feb 2021

Longer than P75 for phase_3

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

First Submitted

Initial submission to the registry

August 29, 2019

Completed
1 day until next milestone

First Posted

Study publicly available on registry

August 30, 2019

Completed
1.4 years until next milestone

Study Start

First participant enrolled

February 4, 2021

Completed
4.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2025

Completed
4 months until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2026

Completed
Last Updated

February 7, 2024

Status Verified

February 1, 2024

Enrollment Period

4.8 years

First QC Date

August 29, 2019

Last Update Submit

February 6, 2024

Conditions

Keywords

total hip and knee arthroplasty

Outcome Measures

Primary Outcomes (2)

  • Venous thromboembolism

    symptomatic proximal deep vein thrombosis or pulmonary embolism

    90 days

  • Bleeding

    major and clinically relevant, non-major bleeds

    90 days

Secondary Outcomes (2)

  • Survival

    90 days

  • Cost-effectiveness

    90 days

Study Arms (4)

THA-control arm

ACTIVE COMPARATOR

Total Hip Arthroplasty: 5 days of rivaroxaban, followed by 30 days of aspirin

Drug: Rivaroxaban 10 MG and acetylsalicylic acid 81 mg

THA-study arm

EXPERIMENTAL

Total Hip Arthroplasty: 35 days of aspirin

Drug: acetylsalicylic acid 81 mg

TKA-control arm

ACTIVE COMPARATOR

Total Knee Arthroplasty: 5 days of rivaroxaban, followed by 9 days of aspirin

Drug: Rivaroxaban 10 MG and acetylsalicylic acid 81 mg

TKA-study arm

EXPERIMENTAL

Total Knee Arthroplasty: 14 days of aspirin

Drug: acetylsalicylic acid 81 mg

Interventions

Starting post op, rivaroxaban (5 days) followed by aspirin (9 days for TKA; 30 days for THA)

Also known as: Xarelto 10mg and aspirin 81mg
THA-control armTKA-control arm

Starting post op, aspirin for 9 days for TKA and 30 days for THA

Also known as: aspirin 81mg
THA-study armTKA-study arm

Eligibility Criteria

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

You may qualify if:

  • Patients undergoing elective THA/TKA at the participating institutions will be potentially eligible for this study
  • Written informed consent in accordance with federal, local and institutional guidelines

You may not qualify if:

  • Previous documented VTE (proximal DVT or any PE)
  • Hip or lower limb fracture in the previous three months, not related to present surgery
  • Metastatic cancer
  • Life expectancy less than 6 months
  • History of major bleeding that in the judgment of the investigator precludes use of anticoagulant prophylaxis
  • History of aspirin allergy, active peptic ulcer disease or gastritis that in the judgment of investigator precludes use of aspirin
  • History of significant hepatic disease or any other condition that in the judgment of the investigator precludes the use of rivaroxaban
  • Creatinine clearance less than 15 ml per minute
  • Pre-operative platelet count less than 100 x 109 /L
  • Need for long-term anticoagulation due to a pre-existing co-morbid condition or due to the development of VTE following surgery but prior to randomization
  • Received anticoagulation post operatively
  • Bilateral THA/TKA or simultaneous hip and knee arthroplasty
  • Major surgical procedure within the previous 3 months
  • Requirement for major surgery post arthroplasty within a 90 day period
  • Chronic daily aspirin use with dose greater than 100 mg a day
  • +6 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Queen Elizabeth II HSC

Halifax, Nova Scotia, B3H 3A7, Canada

RECRUITING

MeSH Terms

Conditions

Venous Thromboembolism

Interventions

RivaroxabanAspirin

Condition Hierarchy (Ancestors)

ThromboembolismEmbolism and ThrombosisVascular DiseasesCardiovascular Diseases

Intervention Hierarchy (Ancestors)

ThiophenesSulfur CompoundsOrganic ChemicalsMorpholinesOxazinesHeterocyclic Compounds, 1-RingHeterocyclic CompoundsSalicylatesHydroxybenzoatesPhenolsBenzene DerivativesHydrocarbons, AromaticHydrocarbons, CyclicHydrocarbons

Study Officials

  • Sudeep P Shivakumar, MD

    Dalhousie University/Nova Scotia Health Authority

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Susan L Pleasance, BScN

CONTACT

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
over-encapsulated rivaroxaban/ASA
Purpose
PREVENTION
Intervention Model
SEQUENTIAL
Model Details: randomized, controlled, double-blind
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Head, Division of Hematology

Study Record Dates

First Submitted

August 29, 2019

First Posted

August 30, 2019

Study Start

February 4, 2021

Primary Completion

December 1, 2025

Study Completion

April 1, 2026

Last Updated

February 7, 2024

Record last verified: 2024-02

Data Sharing

IPD Sharing
Will not share

Locations