T. Billings IV, Frederic R. Petracek, Michael Jackson Roberts II, L. Pretorius, Mias Perioperative Intravenous Acetaminophen Attenuates Lipid Peroxidation in Adults Undergoing Cardiopulmonary Bypass: A Randomized Clinical Trial <div><p>Background</p><p>Cardiopulmonary bypass (CPB) lyses erythrocytes and induces lipid peroxidation, indicated by increasing plasma concentrations of free hemoglobin, F<sub>2</sub>-isoprostanes, and isofurans. Acetaminophen attenuates hemeprotein-mediated lipid peroxidation, reduces plasma and urine concentrations of F<sub>2</sub>-isoprostanes, and preserves kidney function in an animal model of rhabdomyolysis. Acetaminophen also attenuates plasma concentrations of isofurans in children undergoing CPB. The effect of acetaminophen on lipid peroxidation in adults has not been studied. This was a pilot study designed to test the hypothesis that acetaminophen attenuates lipid peroxidation in adults undergoing CPB and to generate data for a clinical trial aimed to reduce acute kidney injury following cardiac surgery.</p><p>Methods and Results</p><p>In a prospective double-blind placebo-controlled clinical trial, sixty adult patients were randomized to receive intravenous acetaminophen or placebo starting prior to initiation of CPB and for every 6 hours for 4 doses. Acetaminophen concentrations measured 30 min into CPB and post-CPB were 11.9±0.6 μg/mL (78.9±3.9 μM) and 8.7±0.3 μg/mL (57.6±2.0 μM), respectively. Plasma free hemoglobin increased more than 15-fold during CPB, and haptoglobin decreased 73%, indicating hemolysis. Plasma and urinary markers of lipid peroxidation also increased during CPB but returned to baseline by the first postoperative day. Acetaminophen reduced plasma isofuran concentrations over the duration of the study (P = 0.05), and the intraoperative plasma isofuran concentrations that corresponded to peak hemolysis were attenuated in those subjects randomized to acetaminophen (P = 0.03). Perioperative acetaminophen did not affect plasma concentrations of F<sub>2</sub>-isoprostanes or urinary markers of lipid peroxidation.</p><p>Conclusions</p><p>Intravenous acetaminophen attenuates the increase in intraoperative plasma isofuran concentrations that occurs during CPB, while urinary markers were unaffected.</p><p>Trial Registration</p><p>ClinicalTrials.gov <a href="https://clinicaltrials.gov/ct2/show/NCT01366976" target="_blank">NCT01366976</a></p></div> cpb;Perioperative Intravenous Acetaminophen Attenuates Lipid Peroxidation;intraoperative plasma isofuran concentrations;Lipid peroxidation;plasma concentrations;acetaminophen attenuates lipid peroxidation;plasma isofuran concentrations;Randomized Clinical Trial BackgroundCardiopulmonary;marker;Adults Undergoing Cardiopulmonary Bypass;attenuates plasma concentrations;nct;lipid peroxidation.ConclusionsIntravenous acetaminophen attenuates 2015-02-23
    https://plos.figshare.com/articles/dataset/_Perioperative_Intravenous_Acetaminophen_Attenuates_Lipid_Peroxidation_in_Adults_Undergoing_Cardiopulmonary_Bypass_A_Randomized_Clinical_Trial_/1316022
10.1371/journal.pone.0117625