Machine Perfusion Improves Function of Deceased Donor Livers
MONDAY, March 15, 2021 -- The risk for nonanastomotic biliary strictures is lower with hypothermic oxygenated machine perfusion, rather than conventional static cold storage, of a liver obtained from a donor after circulatory death, according to a study published online Feb. 24 in the New England Journal of Medicine.
Rianne van Rijn, M.D., Ph.D., from the University of Groningen in the Netherlands, and colleagues conducted a multicenter, controlled trial, involving patients who were undergoing transplantation of a liver obtained from a donor after circulatory death. Participants were randomly assigned to receive the liver after hypothermic oxygenated machine perfusion (machine-perfusion group; 78 patients) or after conventional static cold storage alone (control group, 78 patients).
The researchers found that nonanastomotic biliary strictures occurred in 6 and 18 percent of patients in the machine-perfusion and control groups, respectively (risk ratio, 0.36). Postreperfusion syndrome occurred in 12 and 27 percent of patients in the machine-perfusion and control groups, respectively (risk ratio, 0.43). Early allograft dysfunction occurred in 26 and 40 percent of machine-perfused and control livers, respectively (risk ratio, 0.61). Compared with control, after machine perfusion, the cumulative number of treatments for nonanastomotic biliary strictures was lower by a factor of nearly 4. The two groups had a similar incidence of adverse events.
"Machine perfusion has the potential to improve the function of organs obtained from deceased organ donors and to allow the assessment of organs of uncertain quality, which might dramatically increase the pool of livers available for transplantation," write the authors of an accompanying editorial.
One author from the study disclosed financial ties to the pharmaceutical industry.
© 2021 HealthDay. All rights reserved.
Posted: March 2021
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