Modified Spectrometry (O2C Device) of Intraoperative Microperfusion Predicts Organ Function After Kidney Transplantation: A Pilot Study
Abstract
Background
Delayed graft function (DGF) is defined as posttransplantation dialysis within 1 week, which might be associated with impaired long-term graft survival. The aim of our pilot study was to establish the ability of intraoperative spectrometry of allograft microperfusion to predict DGF.
Methods
Twenty human kidney allografts transplanted from deceased donors were evaluated intraoperatively after reperfusion using modified organ spectrometry (O2C device). We examined hemoglobin oxygen saturation, intravascular amount of hemoglobin, and microperfusion flow/velocity.
Results
Retrospectively, 10/20 (50%) allografts with measurable impairment of cortical hemoglobin oxygen saturation and microperfusion flow/velocity developed DGF. Retrospectively, we found that if the intravascular amount of hemoglobin was increased upon intraoperative measurement, the kidney was prone to develop DGF.
Conclusions
Spectrometry data predicted DGF. Our results supported the thesis that impaired microperfusion is the key to DGF and might be related to postcapillary endothelial damage or intravascular sludge.
aDepartment of Urology, Bonn University, Bonn, Germany
bInstitute of Laboratory Animal Science, University Hospital Aachen, Aachen, Germany
Address reprint requests to Dr Guido Fechner, MD, Bonn University, Sigmund-Freud-Str 25, D-53105 Bonn, Germany
ABSTRACT