Capnometry levels as an indicator of renal graft evolution in uncontrolled non-heart beating donors: [Niveles de capnometría como indicador de evolución de injerto renal de donantes en asistolia no controlada].

Abstract

Objective: The capnometry values during resuscitation are an evolutive predictor of kidneys obtained from uncontrolled non-heart beating donors. Design: The study comprised a retrospective onset cohort of 37 non-heart beating donors and a validation cohort of 55 transplanted kidneys in the period 2013–2017. Scope: The population served by the emergency service and referred to Hospital Universitario Doce de Octubre (Madrid, Spain) as potential uncontrolled non-heart beating donors. Patients: A total of 55 renal transplant patients subjected to hemodialysis and with grafts from uncontrolled non-heart beating donors. Interventions: Capnometry and capnography measurements in potential uncontrolled non-heart beating donors. Variables: Capnometry values recorded initially and at transfer in hospital for comparison with the viability of the extracted kidneys; renal failure and delayed renal function. Results: A total of 55 out of 74 extracted kidneys were transplanted (74.3%). The rest were ruled out due to poor perfusion or signs of ischemia. An association was observed (p = 0.016) between the capnometry values during resuscitation in the grafted kidneys (µ = 22.8 mmHg) and in the kidneys discarded for transplantation (µ = 17.35 mmHg). Conclusions: Capnometry during resuscitation serves as a marker to be taken into account in relation to the viability of the transplanted organs in uncontrolled non-heart beating donors.