PMID- 36368163 OWN - NLM STAT- MEDLINE DCOM- 20221129 LR - 20221129 IS - 1872-6283 (Electronic) IS - 0379-0738 (Linking) VI - 341 DP - 2022 Dec TI - Cardiac troponin T as a postmortem biomarker for acute myocardial infarction. PG - 111506 LID - S0379-0738(22)00336-X [pii] LID - 10.1016/j.forsciint.2022.111506 [doi] AB - The diagnosis of acute myocardial infarction (AMI), especially within the first hours after onset of ischemia, poses a challenge to the forensic pathologist. During this time, the infarction is generally not visible macroscopically nor with routine histology. Whilst cardiac Troponin T (cTnT) is a well-established biomarker for AMI clinically, its use as a postmortem diagnostic tool is less conclusive, warranting further investigation. The aim of this study was to investigate the sensitivity and specificity of cTnT as a postmortem diagnostic marker of AMI and the impact of postmortem interval (PMI) and cardiopulmonary resuscitation (CPR) on cTnT-concentrations. Samples from 64 subjects, 15 AMI cases and 49 controls, were collected at the Department of Forensic Medicine in Stockholm and analyzed for cTnT: one femoral blood sample was taken at arrival of the body to the morgue, and again during autopsy. Pericardial fluid (PCF) was only collected during autopsy. Sensitivity and specificity for serum cTnT were calculated to be 86.7 %/67.3 % and for pericardial fluid 86.7 %/44.9 %. cTnT samples taken during autopsy were generally higher than samples taken upon arrival to the morgue. A CPR-dependent elevation in serum cTnT was noted (P = .005). With a cut off at 56 n/L, serum cTnT can be used to rule out AMI. The postmortem interval and CPR must be taken into consideration when interpreting postmortem cTnT. CI - Copyright (c) 2022 The Author(s). Published by Elsevier B.V. All rights reserved. FAU - Moridi, Michael AU - Moridi M AD - Karolinska Institutet, Solnavagen 1, SE-171 77 Solna, Sweden. FAU - Magnusson, Cecilia AU - Magnusson C AD - Karolinska Institutet, Solnavagen 1, SE-171 77 Solna, Sweden. FAU - Zilg, Brita AU - Zilg B AD - Karolinska Institutet, Solnavagen 1, SE-171 77 Solna, Sweden; Department of Forensic Medicine, Swedish National Board of Forensic Medicine, Retzius vag 5, SE-171 65, Stockholm, Sweden. Electronic address: brita.zilg@ki.se. LA - eng PT - Journal Article DEP - 20221028 PL - Ireland TA - Forensic Sci Int JT - Forensic science international JID - 7902034 RN - 0 (Troponin T) RN - 0 (Biomarkers) SB - IM MH - Humans MH - Troponin T MH - Autopsy MH - *Myocardial Infarction/diagnosis MH - Biomarkers MH - Morgue MH - *Pericardial Effusion OTO - NOTNLM OT - Acute myocardial infarction OT - Ischemic heart disease OT - Postmortem biochemistry OT - Troponin-T EDAT- 2022/11/12 06:00 MHDA- 2022/11/30 06:00 CRDT- 2022/11/11 18:22 PHST- 2022/08/04 00:00 [received] PHST- 2022/10/17 00:00 [revised] PHST- 2022/10/26 00:00 [accepted] PHST- 2022/11/12 06:00 [pubmed] PHST- 2022/11/30 06:00 [medline] PHST- 2022/11/11 18:22 [entrez] AID - S0379-0738(22)00336-X [pii] AID - 10.1016/j.forsciint.2022.111506 [doi] PST - ppublish SO - Forensic Sci Int. 2022 Dec;341:111506. doi: 10.1016/j.forsciint.2022.111506. Epub 2022 Oct 28.