Post- Approval Study on Patients Who Received a HeartWare HVAD® During IDE Trials

Overall survival is the probability (expressed as a percent of 100) the participant did not die within 5 years post implant via the Kaplan-Meier method. Participants that did not die were censored at the time of last follow-up or their end of study at 5 years post implant, whichever occurred first.

The number and percentage of participants with a given outcome (e.g., alive on device, transplant, death, etc.) as of their last follow up or end of study, whichever occurred first.

A summary of the number of re-hospitalizations per participant from enrollment into HW-PAS-03 throughout their participation in the study.

Number of participants with an Intermacs adverse event, per the Intermacs definitions. An adverse event is any untoward medical occurrence, unintended disease or injury or any untoward clinical signs (including an abnormal laboratory finding) in participants, users or other persons whether or not related to the medical device.

Health Status change as measured by Kansas City Cardiomyopathy Questionnaire (KCCQ) Overall Summary Score. The KCCQ is a disease-specific patient-reported outcomes measure for patients with heart failure. It consists of 23 items, is comprised of 7 clinically relevant scales (Symptom Frequency, Symptom Burden, Symptom Stability, Physical Limitation, Social Limitation, Quality of Life, and Self-Efficacy), and yields 3 summary scores (Clinical Summary, Total Symptom, and Overall Summary Scores). Scale and summary scores range between 0 and 100, with higher scores indicating better health status (e.g., better functioning, fewer symptoms, better quality of life). The Overall Summary Score is calculated as the mean of the Physical Limitation, Total Symptom, Quality of Life and Social Limitation scores. A positive change in score from baseline indicates an improvement.

The EuroQol-5D (version 5L) is a brief self-administered, validated instrument consisting of 2 parts. The second part consists of the EQ-5D general health status as measured by a visual analog scale (EQ-5D VAS). EQ-5D VAS measures the participant's self-rated health status on a scale from 0 (worse imaginable health state) to 100 (best imaginable health state).

Change in Functional status, as measured by New York Heart Association (NYHA) class. There are 4 levels of NYHA:

I (Mild): No limitation of physical activity. Ordinary physical activity does not cause undue fatigue, palpitation, or dyspnea.

II (Mild): Slight limitation of physical activity. Comfortable at rest, but ordinary physical activity results in fatigue, palpitation, or dyspnea.

III (Moderate): Marked limitation of physical activity. Comfortable at rest, but less than ordinary activity causes fatigue, palpitation, or dyspnea.

IV (Severe): Unable to carry out any physical activity without discomfort. Symptoms of cardiac insufficiency at rest. If any physical activity is undertaken, discomfort is increased.

Improvement is defined as moving from a higher numerical NYHA level to a lower numerical NYHA level (e.g., IV to III).

Change in functional status, as measured by 6-minute walk test. A positive change in score from baseline indicates an improvement.