Impact of donor-to-recipient weight ratio on the hospital outcomes of pediatric heart transplantation

The Egyptian Heart Journal(2022)

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Abstract
Background Identifying the factors that can influence the prognosis and final outcomes of pediatric heart transplantation is important and makes it possible to prevent complications and improve outcomes. Coordination of donor characteristics with the recipient in terms of sex, weight, body mass index (BMI), and body surface area (BSA) is an important factor that can influence the outcome of the transplantation. There is still no consensus regarding the role of discrepancy in anthropometrics between donors and recipients. The aim of this study was to investigate the relationship between donor and recipient weight mismatch on the early outcomes of pediatric heart transplantation. In this historical cohort study, 80 children who had underwent heart transplantation for the first time between 2014 and 2019 in Shahid Rajaie Cardiovascular Medical and Research Center in Tehran, Iran, were enrolled and divided into three groups according to donor-to-recipient weight ratio (0.8 < D/RW ≤ 1.5, 1.5 < D/RW ≤ 2.5, and 2.5 < D/RW). The early outcomes of transplantation, during the first post-transplant month, including right heart failure, renal failure, graft rejection, inotrope dependency, duration of intubation, length of ICU stay, death and requiring extracorporeal membrane oxygenation, were recorded through reviewing patient records. Results Median donor-to-recipient BSA ratio was directly associated with higher vasoactive–inotropic score ( P = 0.038), while no significant association was found between donor-to-recipient weight ratio and vasoactive–inotropic score ( P = 0.07). No significant relationship was found between other outcomes and donor-to-recipient weight ratio or donor-to-recipient BSA ratio. Conclusions Patients who require heart transplantation may also benefit from mismatch donors, especially in those with significant cardiomegaly.
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Key words
Cardiac transplantation,Donor selection,Transplant recipient
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