Limitations
This study was prone to limitations due to its retrospective and non-randomized design. In choosing a potential donor graft for a recipient, it is common for surgeons to employ some form of donor-to-recipient sizing prior to organ acceptance. In this study, the analysis was conducted on patients who underwent OHT, and therefore, donor-to-recipient pairing was not randomized. As a result, the true relationship between donor heart sizing and outcomes may be underestimated.