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Pumping in Pediatric Kidney Transplantation—Does it Matter?

M. MacConmara, J. Gattineni, D. Desai, P. Vagefi, C. S. Hwang

UT Southwestern, Dallas, TX

Meeting: 2020 American Transplant Congress

Abstract number: 140

Keywords: N/A, Outcome, Preservation, Pulsatile preservation

Session Information

Date: Saturday, May 30, 2020

Session Name: Kidney: Pediatrics

Session Time: 3:15pm-4:45pm

 Presentation Time: 3:39pm-3:51pm

Location: Virtual

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*Purpose: Pulsatile perfusion of deceased donor kidneys is commonly practiced in adult kidney transplantation. We examined the practice of pulsatile perfusion in pediatric patients undergoing kidney transplantation and compared outcomes from preservation using pulsatile perfusion (PUMP) and static cold storage (COLD) in pediatric recipients.

*Methods: The UNOS database was used to determine outcomes in all pediatric kidney recipients (<18 years) who were transplanted between 1994—2018. Living donor and multi-organ transplant recipients were excluded. Patients were divided according to preservation method into PUMP or COLD groups. Donor and recipient demographic data were examined, as were survival and outcomes. A p-value of <0.05 was considered to be significant.

*Results: There were 10,045 pediatric kidney transplants performed during the study period, of which 1,619 were PUMP (16.1%) and 8,426 were COLD (83.9%). PUMP donors were significantly younger (22.7 vs. 23.8 years), had a higher KDPI (22.4% vs. 19.7%), longer cold storage time (18.8 vs. 14.1 hours), more frequent DCD donor status (12.9% vs. 1.3%), and more likely to be an increased risk of disease (IRD) transmission donor (9.1% vs. 4.8%). PUMP kidneys were also more likely to have been biopsied (18.1% vs. 3.3%). There were no differences in donor creatinine (0.99 vs. 0.96 mg/dL). Recipients of PUMP kidneys were significantly older (12.0 vs. 11.6 years), had a shorter wait time (287.7 vs. 320.2 days), and greater HLA mismatch (4.5 vs. 4.3). There were no differences in BMI, initial or final cPRA, length of stay, or serum creatinine at the time of discharge (1.42 vs. 1.42 mg/dL). No differences in the allograft survival at 10 years was noted between PUMP and COLD groups (Figure 1). Additionally, DGF occurrence (8.5% vs. 12.5%, p<0.05) and rejection rate in the initial 12 months post transplant (11.5% vs. 13.8%) were significantly lower in the PUMP group compared with the COLD group.

*Conclusions: Despite multiple unfavorable characteristics noted in PUMP donors, recipients of these kidneys have no difference in allograft survival and have a lower DGF rate. These data support the utilization of pulsatile perfusion during the evaluation of higher risk pediatric kidney donors and a possible role in improving their outcomes during pediatric kidney transplantation.

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To cite this abstract in AMA style:

MacConmara M, Gattineni J, Desai D, Vagefi P, Hwang CS. Pumping in Pediatric Kidney Transplantation—Does it Matter? [abstract]. Am J Transplant. 2020; 20 (suppl 3). https://atcmeetingabstracts.com/abstract/pumping-in-pediatric-kidney-transplantation-does-it-matter/. Accessed February 28, 2021.

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