Post Market Surveillance of the HeartMate 3 Left Ventricular Assist System in Korea

Overall survival to transplant, myocardial recovery or on device support free of debilitating stroke (60 days post-stroke Modified Rankin Score >3) or reoperation for pump replacement. Subjects who are urgently transplanted due to a HeartMate 3 malfunction will be considered to have experienced a primary endpoint event, as will subjects who expire, suffer a debilitating stroke or have their HeartMate 3 exchanged due to a device failure. Subjects who are transplanted (except as described above), explanted for recovery, withdraw from the trial or are lost to follow-up will not be considered to have experienced a primary endpoint event.

Cumulative occurrence of adverse events will be presented as percent of patients with adverse events.

The Six Minute Walk Test measures the distance a patient is able to walk during 6 minutes without running or jogging.

Functional status as measured by NYHA classification. NYHA class categorizes patients by the severity of their heart failure symptoms. As the class increases, the degree of symptoms is more severe indicating worse functional status. Class I indicates no limitation of physical activity. Class II indicates slight limitation of physical activity. Class IIIA indicates marked limitation of physical activity where less than ordinary physical activity causes fatigue, palpitation, dyspnea, or angina pain. Class IIIB indicates marked limitation of physical activity where mild physical activity causes fatigue, palpitation, dyspnea, or angina pain. Class IV indicates inability to carry on any physical activity without discomfort.

Subject's quality-of-life (QoL) will be measured by the EQ-5D-5L QoL questionnaire at baseline and all visits after HM3 implant until the end of surveillance period. The EQ-5D-5L Questionnaire is a standardized measure of health status that consists of a descriptive system and a visual analog score (VAS). The VAS records the subject's self-rated health status which ranges from a score of 0 (worst health you can imagine) to 100 (best health you can imagine). A higher VAS score represents a better quality of life. The overall mean and standard deviation of the Visual Analog Scale (VAS) will be presented for all follow-up visits. The VAS is not available for all participants at all follow up timepoints.

Frequency of rehospitalization events inclusive of rehospitalization for heart transplantation.

Number of reoperation events inclusive of heart transplantations.

All suspected HM3 device malfunctions will be reported. Device malfunctions will be collected under the general category of Device Deficiencies. Device deficiency is defined as an inadequacy of a medical device related to its identity, quality, durability, reliability, safety or performance, such as malfunction, misuse or use error and inadequate labeling. This includes the failure of the device to meet its performance specifications or otherwise perform as intended.