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Assessing Liver Transplant Outcomes Utilizing Post-Cross Clamp Offers

K. Pont1, E. Macdonough1, D. Das2, K. Valenti1, P. Morgan1, B. Aqel1, A. Mathur1, A. Moss1, K. S. Reddy1, C. Jadlowiec1

1Mayo Clinic, Phoenix, AZ, 2Mayo Clinic Alix School of Medicine, Scottsdale, AZ

Meeting: 2021 American Transplant Congress

Abstract number: 1158

Keywords: Donors, marginal, Liver grafts, Liver transplantation

Topic: Clinical Science » Liver » Liver: MELD, Allocation and Donor Issues (DCD/ECD)

Session Information

Session Name: Liver: MELD, Allocation and Donor Issues (DCD/ECD)

Session Type: Poster Abstract

Session Date & Time: None. Available on demand.

Location: Virtual

*Purpose: With the ongoing organ shortage, there has been increased interest in utilizing post-cross clamp (XC) liver allografts as a means of expanding the donor pool. Limited data exists on the outcomes of these allografts.

*Methods: We assessed 613 liver transplants (LT) at our center spanning the years of 2015 through June 2020. Multivisceral and living donor LT were excluded.

*Results: During this period there were 101 post-XC LT (16.5%) and 512 standard XC LT (83.5%). There were no differences in recipient age (p=0.46) or sex (p=0.41). Model for End Stage Liver Disease (MELD) scores were lower for post-XC recipients (18.5±8.1 vs. 22.7±8.5, p<0.0001). Post-XC offers came from younger donors (p=0.002), were more likely to be from donation after brain death donors (93.1%, p<0.0001) and be regional (55.4%) or national (31.7%) offers (p<0.0001). Cold ischemia time (CIT) was higher for post-XC LT (p<0.0001). Post-XC grafts were more likely to have moderate-severe steatosis (15.8% vs. 8.8%, p=0.03). There were no differences in recipient hospital length of stay (p=0.71) or incidence early allograft dysfunction between the two groups (Bili >10, p=0.63; INR >1.6, p=0.32; AST >2000, p=0.35). For post-XC offers, 1-year patient survival was 95.0% versus 95.9% in standard XC offers (HR 0.67, 95% CI 0.29-1.54, p=0.28). One-year graft survival was 93.1% versus 93.2% (HR 1.13, 95% CI 0.59-2.14, p=0.72).

*Conclusions: Outcomes utilizing post-XC liver allografts are good. Appropriate recipient selection, dedicated procurement coordinators and preparedness of the surgical teams with anticipation of longer CIT are important variables that allow for the successful utilization of post-XC liver offers.

Post-Transplant Outcomes
Standard Offer n=512 Post-XC Offer n=101 P value
ICU LOS, median (days) 1.0 1.0 0.64
Hospital LOS, median (days) 6.0 5.0 0.71
Day 7 T. Bili >10 (mg/dL) 26 (5.1%) 4 (4.0%) 0.63
Day 7 INR >1.6 17 (3.3%) 4 (4.0%) 0.32
AST >2000 first week (U/L) 258 (50.4%) 56 (55.5%) 0.35
Peak AST (U/L) 2937±2407 3099±2485 0.54
PNF 3 (0.6%) 2 (2.0%) 0.15

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To cite this abstract in AMA style:

Pont K, Macdonough E, Das D, Valenti K, Morgan P, Aqel B, Mathur A, Moss A, Reddy KS, Jadlowiec C. Assessing Liver Transplant Outcomes Utilizing Post-Cross Clamp Offers [abstract]. Am J Transplant. 2021; 21 (suppl 3). https://atcmeetingabstracts.com/abstract/assessing-liver-transplant-outcomes-utilizing-post-cross-clamp-offers/. Accessed May 16, 2025.

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