Comparison of Antithrombotic Treatments After Aortic Valve Replacement. Rivaroxaban: A New Antithrombotic Treatment for Patients With Mechanical Prosthetic Aortic Heart Valve. (CATHAR)
|ClinicalTrials.gov Identifier: NCT02128841|
Recruitment Status : Terminated (not enough patients)
First Posted : May 1, 2014
Last Update Posted : November 17, 2017
To determine if rivaroxaban (Xarelto) is feasible and safe for prevention of major complications in patients undergoing a mechanical aortic heart valve replace-ment.
To identify the value of molecular markers suitable for monitoring of anticoagulation effectiveness of rivaroxaban and its correlation with transcranial Doppler emboli count in patients undergoing a mechanical aortic heart valve replacement.
Design This is a prospective, open-label phase 2 pilot study with independent evaluation of all outcomes and a historical control group.
Number of patients 30 in experimental group (patients in the center's registry database serve as control group).
Main eligibility criteria All patients between 18 and 70 years old receiving a mechanical aortic valve replacement with a pre-operative left ventricular ejection fraction >/=35%.
Interventions Experimental: Rivaroxaban 20mg p.o., once daily, for six months Historical control: Phenprocoumon (Marcoumar) p.o., once daily Outcomes
Composite outcome of prosthetic thrombus requiring reoperation/intervention, major bleeding, visceral ischemia, stroke, pulmonary embolism, myocardial infarction or death from any cause 180 days after intervention.
Each component of the composite outcome plus serious adverse events. Prosthetic thrombus requiring reoperation/intervention plus non-clinically relevant thrombi will be used as an additional safety outcome.
Molecular markers suitable for monitoring the effectiveness of rivaroxaban.
|Condition or disease||Intervention/treatment||Phase|
|Aortic Valve Disease Heart Valve Prosthesis Implantation Anticoagulants||Drug: Rivaroxaban||Phase 2|
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||12 participants|
|Intervention Model:||Single Group Assignment|
|Masking:||None (Open Label)|
|Official Title:||This is a Prospective, Open-label Phase 2 Pilot Study With Independent Evaluation of All Outcomes and a Historical Control Group to Determine if Rivaroxaban (Xarelto) is Feasible and Safe for Prevention of Major Complications in Patients Undergoing a Mechanical Aortic Heart Valve Replacement.|
|Actual Study Start Date :||September 2012|
|Actual Primary Completion Date :||September 2017|
|Actual Study Completion Date :||September 2017|
Experimental: All patients
CATHAR is a prospective, open-label, pilot, phase 2 study with independent evaluation of all outcomes. The trial is based on a Bayesian design by incorporating historical information for the control group for all analyses.
Direct Factor Xa Inhibitor
- All cause mortality [ Time Frame: 6 months ]
- Number of patients with prosthetic thrombus [ Time Frame: 6 months ]
- Number of patients with major bleeding [ Time Frame: 6 months ]
- Number of patients with ischemia [ Time Frame: 6 months ]
- Number of patients with stroke [ Time Frame: 6 months ]
- Number of patients with embolism [ Time Frame: 6 months ]
- Number of patients with myocardial infarction [ Time Frame: 6 months ]
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02128841
|Dep. of Cardiovascular Surgery, Berne University Hospital|
|Bern, Switzerland, 3010|
|Principal Investigator:||Eva Roost, MD||Department of cardiovascular surgery, University Hospital Berne, Switzerland|