To evaluate the safety and effectiveness of the Model 400 aortic valve bioprosthesis.
This is a prospective, interventional, non-randomized, worldwide, multi-center trial. A maximum of 1300 subjects were to be implanted at a maximum of 40 sites in the US, Europe and Canada. The trial includes male and female patients of legal age to provide informed consent in the country where they enrolled in the trial, requiring replacement for a diseased, damaged, or malfunctioning native or prosthetic aortic valve. Subjects are followed out to 5 years, and select sites follow subjects out to 12 years. Enrollment closed on 14Jul2017 for all valve sizes. Enrollment was reopened in Apr2019 for the 29mm valve size at a subset of US and Canadian sites to obtain greater patient numbers required by the FDA to support US commercial approval of this valve size. Enrollment for the 29mm valve size closed on 14Feb2023.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
1,312
Evaluate the Safety of the Model 400 Avalus Valve With Regard to Valve-related Adverse Events and Death at 1 Year Post-implant
Safety of the valve is evaluated by the time-related incidence of valve-related adverse events and death. The following valve-related adverse events are evaluated in this study: Thromboembolism, Thrombosis, Hemorrhage, Paravalvular leak (PVL), Endocarditis, Hemolysis, Structural valve deterioration, Non-structural dysfunction, Reintervention, Explant, and Death. A minimum of 15 participants per valve size are evaluated. The incidence rates will be used to summarize valve-related adverse events and death.
Time frame: 1 year post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to the Change of New York Heart Association (NYHA) Classification From Baseline Through 1 Year
At each timepoint, a minimum of 15 participants per valve size evaluated for change in New York Heart Association (NYHA) functional classification from baseline to 1 year post-procedure. Measure Description: Cardiac Disease with Functional Classes (lower value is more desirable than higher value) I - No limitation of physical activity. Ordinary physical activity does not cause undue fatigue, palpitation or shortness of breath. II - Slight limitation of physical activity. Comfortable at rest. Ordinary physical activity results in fatigue, palpitation, shortness of breath or chest pain. III - Marked limitation of physical activity. Comfortable at rest. Less than ordinary activity causes fatigue, palpitation, shortness of breath or chest pain. IV - Symptoms of heart failure at rest. Any physical activity causes further discomfort.
Time frame: Discharge (up to 30 days), 3-6 months, and 1 year post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Effective Orifice Area Through 1 Year Post-procedure
A minimum of 15 participants per valve size evaluated by transthoracic echocardiography technique and assessed by an independent core laboratory. The effective orifice area (EOA) is measured as the minimal cross-sectional area of the blood flow downstream of the aortic valve.
Time frame: Discharge (up to 30 days), 3-6 months, 1 year post-implant
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University of Southern California (USC) University Hospital
Los Angeles, California, United States
University of Colorado Hospital
Aurora, Colorado, United States
Hartford Hospital
Hartford, Connecticut, United States
University of Florida Shands
Gainesville, Florida, United States
Piedmont Hospital
Atlanta, Georgia, United States
University of Maryland Medical Center
Baltimore, Maryland, United States
Massachusetts General Hospital
Boston, Massachusetts, United States
University of Michigan Cardiovascular Center
Ann Arbor, Michigan, United States
Minneapolis Heart Institute Foundation
Minneapolis, Minnesota, United States
Maimonides Medical Center
Brooklyn, New York, United States
...and 28 more locations
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to the Effective Orifice Area Index (EOAI) Through 1 Year Post-implant
A minimum of 15 participants per valve size evaluated by transthoracic echocardiography technique and assessed by an independent core laboratory for effective orifice area index (EOAI = EOA/BSA) Effective orifice area index is equal to the effective orifice area (EOA) in cm\^2 divided by body surface area (BSA) in m\^2. The achievement criterion for the effective orifice area index (EOAI) is defined to be ≥0.6 cm\^2/m\^2 12 months after the procedure. This criterion is in accordance with the definition of severe aortic stenosis in the American College of Cardiology (ACC) / American Heart Association (AHA) guidelines for the management of valvular heart disease.
Time frame: Discharge (up to 30 days), 3-6 months, and 1 year post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to the Peak Pressure Gradient (mmHg) From Discharge up to 1 Year
A minimum of 15 participants per valve size evaluated by transthoracic echocardiography technique and assessed by an independent core laboratory. The peak pressure gradient is the maximum value measured of flow of blood through the aortic valve as measured in millimeters of mercury.
Time frame: Measured at discharge (up to 30 days), 3-6 months, and 1 year post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Mean Pressure Gradient (mmHg) Through 1 Year Post-implant
A minimum of 15 participants per valve size evaluated by transthoracic echocardiography technique and will be assessed by an independent core laboratory. The mean pressure gradient is the average flow of blood through the aortic valve measured in millimeters of mercury.
Time frame: Discharge (up to 30 days), 3-6 months, and 1 year post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Performance Index (L/Min) Through 1 Year Post-implant
A minimum of 15 participants per valve size will have performance index (L/Min) measured by transthoracic echocardiography technique and will be assessed by an independent core laboratory. The performance index is the measurement of the effective orifice area divided by the native orifice area.
Time frame: Discharge (up to 30 days), 3-6 months, and 1 year post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Cardiac Output (L/Min) Through 1 Year Post-implant
Cardiac output is the amount of blood pumped by the heart per minute. A minimum of 15 participants per valve size were evaluated for this outcome measure by transthoracic echocardiography technique and assessed by an independent core laboratory.
Time frame: Discharge (up to 30 days), 3-6 months, and 1 year post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Cardiac Index (L/Min/m^2) Through 1 Year Post-implant
A minimum of 15 participants per valve size evaluated by transthoracic echocardiography technique and will be assessed by an independent core laboratory. The cardiac index is an assessment of the cardiac output based on a patient's size measured by dividing the cardiac output by the patient's body's surface area.
Time frame: Discharge (up to 30 days), 3-6 months, and 1 year post-implant
Evaluate the Safety of the Model 400 Avalus Valve With Regard to Valve-related Adverse Events and Death Annually Through 5 Years Post-implant
Safety of the valve is evaluated by the time-related incidence of valve-related adverse events and death. The following valve-related adverse events are evaluated in this study: Thromboembolism, Thrombosis, Hemorrhage, Paravalvular leak (PVL), Endocarditis, Hemolysis, Structural valve deterioration, Non-structural dysfunction, Reintervention, Explant, and Death. The Kaplan-Meier event rates will be used to summarize valve-related adverse events and death. The Kaplan-Meier rate and the corresponding 95% confidence interval will be presented for each visit interval.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to the Change of New York Heart Association (NYHA) Classification From Baseline Through 5 Years Post-implant
At each timepoint, participants were evaluated for change in New York Heart Association (NYHA) functional classification from baseline through 5 years post-procedure. Measure Description: Cardiac Disease with Functional Classes (lower value is more desirable than higher value) I - No limitation of physical activity. Ordinary physical activity does not cause undue fatigue, palpitation or shortness of breath. II - Slight limitation of physical activity. Comfortable at rest. Ordinary physical activity results in fatigue, palpitation, shortness of breath or chest pain. III - Marked limitation of physical activity. Comfortable at rest. Less than ordinary activity causes fatigue, palpitation, shortness of breath or chest pain. IV - Symptoms of heart failure at rest. Any physical activity causes further discomfort.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Effective Orifice Area Through 5 Years Post-procedure
Evaluated by transthoracic echocardiography technique and assessed by an independent core laboratory. The effective orifice area (EOA) is measured as the minimal cross-sectional area of the blood flow downstream of the aortic valve.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to the Effective Orifice Area Index (EOAI) Through 5 Years Post-implant
Evaluated by transthoracic echocardiography technique and assessed by an independent core laboratory for effective orifice area index (EOAI = EOA/BSA) Effective orifice area index is equal to the effective orifice area (EOA) in cm\^2 divided by body surface area (BSA) in m\^2. The achievement criterion for the effective orifice area index (EOAI) is defined to be ≥0.6 cm\^2/m\^2 12 months after the procedure. This criterion is in accordance with the definition of severe aortic stenosis in the American College of Cardiology (ACC) / American Heart Association (AHA) guidelines for the management of valvular heart disease.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to the Peak Pressure Gradient (mmHg) From Discharge up to 5 Years Post-implant
Evaluated by transthoracic echocardiography technique and assessed by an independent core laboratory. The peak pressure gradient is the maximum value measured of flow of blood through the aortic valve as measured in millimeters of mercury.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Mean Pressure Gradient (mmHg) Through 5 Years Post-implant
Evaluated by transthoracic echocardiography technique and will be assessed by an independent core laboratory. The mean pressure gradient is the average flow of blood through the aortic valve measured in millimeters of mercury.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Performance Index (L/Min) Through 5 Years Post-implant
Performance index (L/Min) measured by transthoracic echocardiography technique and will be assessed by an independent core laboratory. The performance index is the measurement of the effective orifice area divided by the native orifice area.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Cardiac Output (L/Min) Through 5 Years Post-implant
Cardiac output is the amount of blood pumped by the heart per minute, evaluated by transthoracic echocardiography technique and assessed by an independent core laboratory.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant
Confirm the Effectiveness of the Model 400 Avalus Valve With Regard to Cardiac Index (L/Min/m^2) Through 5 Years Post-implant
Evaluated by transthoracic echocardiography technique and will be assessed by an independent core laboratory. The cardiac index is an assessment of the cardiac output based on a patient's size measured by dividing the cardiac output by the patient's body's surface area.
Time frame: Annually, at years 2, 3, 4, and 5 post-implant