• Bjørn Hoftun Farbu, Halvor Langeland, Thor Ueland, Annika E Michelsen, Jørstad KrügerAndreasAInstitute of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Norwegian Air Ambulance Foundation, Department of Research and Developme, Pål Klepstad, and Trond Nordseth.
• Department of Anaesthesiology and Intensive Care Medicine, St. Olav's University Hospital, Trondheim, Norway; Institute of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Norwegian Air Ambulance Foundation, Department of Research and Development, Oslo, Norway. Electronic address: bjorn.hoftun.farbu@stolav.no.
• Resuscitation. 2023 Apr 1; 185: 109748109748.

BackgroundThe impact of intestinal injury in cardiac arrest is not established. The first aim of this study was to assess associations between clinical characteristics in out-of-hospital cardiac arrest (OHCA) and a biomarker for intestinal injury, Intestinal Fatty Acid Binding Protein (IFABP). The second aim was to assess associations between IFABP and multiple organ dysfunction and 30-day mortality.MethodsWe measured plasma IFABP in 50 patients at admission to intensive care unit (ICU) after OHCA. Demographic and clinical variables were analysed by stratifying patients on median IFABP, and by linear regression. We compared Sequential Organ Failure Assessment (SOFA) score, haemodynamic variables, and clinical-chemistry tests at day two between the "high" and "low" IFABP groups. Logistic regression was applied to assess factors associated with 30-day mortality.ResultsSeveral markers of whole body ischaemia correlated with intestinal injury. Duration of arrest and lactate serum concentrations contributed to elevated IFABP in a multivariable model (p < 0.01 and p = 0.04, respectively). At day two, all seven patients who had died were in the "high" IFABP group, and all six patients who had been transferred to ward were in the "low" group. Of patients still treated in the ICU, the "high" group had higher total, renal and respiratory SOFA score (p < 0.01) and included all patients receiving inotropic drugs. IFABP predicted mortality (OR 16.9 per standard deviation increase, p = 0.04).ConclusionCardiac arrest duration and lactate serum concentrations were risk factors for intestinal injury. High levels of IFABP at admission were associated with multiple organ dysfunction and mortality.Trial RegistrationClinicalTrials.gov: NCT02648061.Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.

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