PMID- 38231204 OWN - NLM STAT- MEDLINE DCOM- 20240411 LR - 20240425 IS - 1437-1596 (Electronic) IS - 0937-9827 (Print) IS - 0937-9827 (Linking) VI - 138 IP - 3 DP - 2024 May TI - Morphine concentrations in fatalities after palliative treatment of acute burn injury. PG - 839-847 LID - 10.1007/s00414-024-03164-9 [doi] AB - The evaluation of a morphine concentration in postmortem blood is routine for a forensic toxicologist. We here report three fatal cases where we found high morphine concentrations with 7.96, 4.30, and 5.82 mg/l in femoral blood that have to be estimated as unusually high. All these individuals died due to severe burn injuries and obtained morphine in the context of their palliative care in the last hours of their lives. According to the autopsy results, the cause of death in case 1 was burn disease with burns of about 90% of the body surface area (BSA), case 2 burn trauma, and case 3 burn shock. Besides morphine, propofol, fentanyl, sufentanil, midazolam, diazepam, lorazepam, cefazolin, and rocuronium were detected in femoral blood. The findings fitted well with the detailed clinical documentation. Further evidence of therapeutic concentrations of quetiapine, duloxetine, and melperone could be matched to preexisting medication of the individuals. Physiologically based pharmacokinetic modelling (PBPK) was applied, developed for the intravenous administration of morphine, to find an explanation for the high morphine concentrations in femoral blood. Quantification of morphine in body fluids and tissue was performed to calculate morphine tissue concentration ratios to the morphine concentration in femoral blood. The presented cases show that pharmacokinetic simulations can reflect decreased renal clearance and decreased hepatic metabolism in general. However, this prediction is not sufficient to explain the high morphine concentrations in femoral blood measured here. It can be assumed that burn shock in particular leads to altered pharmacokinetics, namely decreased distribution of morphine. CI - (c) 2024. The Author(s). FAU - Bickel, Julian AU - Bickel J AUID- ORCID: 0000-0001-8913-6649 AD - Department of Legal Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany. FAU - Aboutara, Nadine AU - Aboutara N AUID- ORCID: 0000-0001-6577-0231 AD - Research Centre Borstel Leibniz Lung Centre, Borstel, Germany. FAU - Jungen, Hilke AU - Jungen H AUID- ORCID: 0000-0002-9101-4269 AD - Department of Legal Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany. FAU - Szewczyk, Anne AU - Szewczyk A AD - Department of Legal Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany. FAU - Muller, Alexander AU - Muller A AUID- ORCID: 0000-0002-5566-3907 AD - Department of Legal Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany. FAU - Ondruschka, Benjamin AU - Ondruschka B AD - Department of Legal Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany. FAU - Iwersen-Bergmann, Stefanie AU - Iwersen-Bergmann S AUID- ORCID: 0000-0001-7687-1388 AD - Department of Legal Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany. S.Iwersen-Bergmann@uke.de. LA - eng PT - Journal Article DEP - 20240117 PL - Germany TA - Int J Legal Med JT - International journal of legal medicine JID - 9101456 RN - 76I7G6D29C (Morphine) RN - YI7VU623SF (Propofol) RN - Q3JTX2Q7TU (Diazepam) SB - IM MH - Humans MH - Morphine/pharmacokinetics MH - Palliative Care MH - *Propofol MH - Diazepam MH - *Burns/metabolism PMC - PMC11004028 OTO - NOTNLM OT - Acute burn injury OT - Forensic toxicology OT - Morphine concentrations OT - Palliative treatment OT - Pharmacokinetic modelling OT - Postmortem analysis COIS- The authors declare no competing interests. EDAT- 2024/01/17 12:43 MHDA- 2024/04/11 06:43 PMCR- 2024/01/17 CRDT- 2024/01/17 11:03 PHST- 2023/08/28 00:00 [received] PHST- 2024/01/08 00:00 [accepted] PHST- 2024/04/11 06:43 [medline] PHST- 2024/01/17 12:43 [pubmed] PHST- 2024/01/17 11:03 [entrez] PHST- 2024/01/17 00:00 [pmc-release] AID - 10.1007/s00414-024-03164-9 [pii] AID - 3164 [pii] AID - 10.1007/s00414-024-03164-9 [doi] PST - ppublish SO - Int J Legal Med. 2024 May;138(3):839-847. doi: 10.1007/s00414-024-03164-9. Epub 2024 Jan 17.