A linearized rate percentage is calculated by the following equation: [(Total number of late adverse events in each category/total number of late patient years) x 100]. Late adverse events are events that occur ≥ 31 days post-implant through each subject's last follow-up visit or contact. Late patient years are calculated by totaling the amount of time the valve is implanted in the patient while participating in the trial and the count begins at ≥ 31 days post-implant through all subject's last follow-up visit or contact.

A linearized rate percentage is calculated by the following equation: [(Total number of late adverse events in each category/total number of late patient years) x 100]. Late adverse events are events that occur ≥ 31 days post-implant through each subject's last follow-up visit or contact. Late patient years are calculated by totaling the amount of time the valve is implanted in the patient while participating in the trial and the count begins at ≥ 31 days post-implant through all subject's last follow-up visit or contact.

A linearized rate percentage is calculated by the following equation: [(Total number of late adverse events in each category/total number of late patient years) x 100]. Late adverse events are events that occur ≥ 31 days post-implant through each subject's last follow-up visit or contact. Late patient years are calculated by totaling the amount of time the valve is implanted in the patient while participating in the trial and the count begins at ≥ 31 days post-implant through all subject's last follow-up visit or contact.

A linearized rate percentage is calculated by the following equation: [(Total number of late adverse events in each category/total number of late patient years) x 100]. Late adverse events are events that occur ≥ 31 days post-implant through each subject's last follow-up visit or contact. Late patient years are calculated by totaling the amount of time the valve is implanted in the patient while participating in the trial and the count begins at ≥ 31 days post-implant through all subject's last follow-up visit or contact.

Participants' freedom from valve-related death or valve- and/or graft-related reintervention. Time to events were estimated by Kaplan-Meier method.

The New York Heart Association functional classification system relates symptoms to everyday activities and the patient's quality of life.

Class I. Patients with cardiac disease but without resulting limitation of physical activity.

Class II. Patients with cardiac disease resulting in slight limitation of physical activity. They are comfortable at rest.

Class III. Patients with cardiac disease resulting in marked limitation of physical activity. They are comfortable at rest.

Class IV. Patients with cardiac disease resulting in inability to carry on any physical activity without discomfort.

Symptoms of heart failure or anginal syndrome may be present even at rest.

Mean gradient is the average flow of blood through the aortic valve measured in millimeters of mercury. Gradients are evaluated by echocardiography over time. In general, a higher value is considered worse, and a lower value is considered better but the value is dependent on the size and type of valve.

Peak gradient is the maximum value measured of flow of blood through the aortic valve as measured in millimeters of mercury. Gradients are evaluated by echocardiography over time. In general, a higher valve is considered worse, and a lower value is considered better, but the value is dependent on the size and type of valve.

Effective orifice area represents the cross-sectional area of the blood flow downstream of the aortic valve. Effective orifice area is evaluated by echocardiography over time. In general, a higher value is considered better, and a lower value is considered worse, but the value is dependent on the size and type of valve.

Effective orifice area index represents the minimal cross-sectional area of the blood flow downstream of the aortic valve divided by the person's body surface area. Effective orifice area index is evaluated by echocardiography over time. In general, a higher value is considered better, and a lower value is considered worse, but the value is dependent on the size of the patient and the size and type of valve.