» Articles » PMID: 38831684

A Novel Cooling Device for Kidney Transplant Surgery

Overview
Journal Surg Innov
Publisher Sage Publications
Specialty General Surgery
Date 2024 Jun 4
PMID 38831684
Authors
Affiliations
Soon will be listed here.
Abstract

Prolonged warm ischemia time (WIT) in kidney transplantation is associated with numerous adverse outcomes including delayed graft function and decreased patient and graft survival. Circumventing WIT lies in maintaining renal hypothermia and efficiently performing the vascular anastomosis during this portion of the procedure. Although numerous methods of intra-operative renal cooling have been proposed, most suffer from practical limitations, and none have been widely adopted. Herein we describe a novel device specifically designed to maintain renal hypothermia during kidney transplant surgery. Aluminum tubing was organized in a serpentine pattern to create a malleable, form-fitting cooling jacket to manipulate renal allografts during transplant surgery. Adult porcine kidneys were used to test the device with 4°C saline as coolant. Kidneys were placed at 24°C; surface and core temperatures were monitored using implanted thermocouples. Anastomosis of porcine kidney vessels to GORE-TEX® vascular grafts in an ex-vivo operative field was performed to assess the functionality of the device. The device maintained surface and core graft temperatures of ≤5°C after 60 minutes of WIT. Furthermore, the device provided hands-free retraction and support for the allograft. We found that ex-vivo anastomosis testing was enhanced by the presence of the cooling jacket. This proof-of-concept study demonstrated that our novel device is a practical tool for renal transplantation and can maintain sufficiently cool graft temperatures to mitigate WIT in an ex-vivo setting. This device is the first of its kind and has the potential to improve kidney transplant outcomes by eliminating WIT during graft implantation.

References
1.
Ward J . Determination of the Optimum temperature for regional renal hypothermia during temporary renal ischaemia. Br J Urol. 1975; 47(1):17-24. DOI: 10.1111/j.1464-410x.1975.tb03913.x. View

2.
Kuipers T, Hellegering J, El Moumni M, Krikke C, Haveman J, Berger S . Kidney temperature course during living organ procurement and transplantation. Transpl Int. 2016; 30(2):162-169. DOI: 10.1111/tri.12892. View

3.
Tennankore K, Kim S, Alwayn I, Kiberd B . Prolonged warm ischemia time is associated with graft failure and mortality after kidney transplantation. Kidney Int. 2016; 89(3):648-58. DOI: 10.1016/j.kint.2015.09.002. View

4.
Anderson C, Graff R, NEWTON W . A method of facilitating renal transplantation with the use of stockinet. Am J Surg. 1973; 126(1):124-5. DOI: 10.1016/s0002-9610(73)80112-6. View

5.
Forsythe J, Dunnigan P, Proud G, Lennard T, Taylor R . Reducing renal injury during transplantation. Br J Surg. 1989; 76(10):999-1001. DOI: 10.1002/bjs.1800761004. View