PMID- 35171384 OWN - NLM STAT- MEDLINE DCOM- 20221115 LR - 20221118 IS - 1573-7241 (Electronic) IS - 0920-3206 (Linking) VI - 36 IP - 6 DP - 2022 Dec TI - Do We Really Need Aspirin Loading for STEMI? PG - 1221-1238 LID - 10.1007/s10557-022-07327-x [doi] AB - Aspirin loading (chewable or intravenous) as soon as possible after presentation is a class I recommendation by current ST elevation myocardial infarction (STEMI) guidelines. Earlier achievement of therapeutic antiplatelet effects by aspirin loading has long been considered the standard of care. However, the effects of the loading dose of aspirin (alone or in addition to a chronic maintenance oral dose) have not been studied. A large proportion of myocardial cell death occurs upon and after reperfusion (reperfusion injury). Numerous agents and interventions have been shown to limit infarct size in animal models when administered before or immediately after reperfusion. However, these interventions have predominantly failed to show significant protection in clinical studies. In the current review, we raise the hypothesis that aspirin loading may be the culprit. Data obtained from animal models consistently show that statins, ticagrelor, opiates, and ischemic postconditioning limit myocardial infarct size. In most of these studies, aspirin was not administered. However, when aspirin was administered before reperfusion (as is the case in the majority of studies enrolling STEMI patients), the protective effects of statin, ticagrelor, morphine, and ischemic postconditioning were attenuated, which can be plausibly attributable to aspirin loading. We therefore suggest studying the effects of aspirin loading before reperfusion on the infarct size limiting effects of statins, ticagrelor, morphine, and/ or postconditioning in large animal models using long reperfusion periods (at least 24 h). If indeed aspirin attenuates the protective effects, clinical trials should be conducted comparing aspirin loading to alternative antiplatelet regimens without aspirin loading in patients with STEMI undergoing primary percutaneous coronary intervention. CI - (c) 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Ye, Regina AU - Ye R AD - University of Texas at Austin, Austin, TX, USA. FAU - Jneid, Hani AU - Jneid H AD - Department of Medicine Baylor College of Medicine, 7200 Cambridge Street Houston, Texas, 77030, USA. FAU - Alam, Mahboob AU - Alam M AD - Department of Medicine Baylor College of Medicine, 7200 Cambridge Street Houston, Texas, 77030, USA. FAU - Uretsky, Barry F AU - Uretsky BF AD - University of Arkansas for Medical Sciences, Central Arkansas Veterans Health System, Little Rock, AR, USA. FAU - Atar, Dan AU - Atar D AD - Department of Cardiology, Oslo University Hospital Ulleval, Oslo, Norway, and Institute of Clinical Medicine, University of Oslo, Oslo, Norway. FAU - Kitakaze, Masafumi AU - Kitakaze M AD - Center of Medical Innovation and Translational Research, Department of Medical Data Science, Osaka University Graduate School of Medicine, Osaka, Japan. FAU - Davidson, Sean M AU - Davidson SM AD - The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX, UK. FAU - Yellon, Derek M AU - Yellon DM AD - The Hatter Cardiovascular Institute, University College London, 67 Chenies Mews, London, WC1E 6HX, UK. FAU - Birnbaum, Yochai AU - Birnbaum Y AUID- ORCID: 0000-0001-7653-6328 AD - Department of Medicine Baylor College of Medicine, 7200 Cambridge Street Houston, Texas, 77030, USA. ybirnbau@bcm.edu. LA - eng PT - Journal Article PT - Review DEP - 20220216 PL - United States TA - Cardiovasc Drugs Ther JT - Cardiovascular drugs and therapy JID - 8712220 RN - R16CO5Y76E (Aspirin) RN - GLH0314RVC (Ticagrelor) RN - 0 (Hydroxymethylglutaryl-CoA Reductase Inhibitors) RN - 0 (Morphine Derivatives) SB - IM MH - Animals MH - *ST Elevation Myocardial Infarction/therapy MH - Aspirin MH - Ticagrelor MH - *Hydroxymethylglutaryl-CoA Reductase Inhibitors MH - *Percutaneous Coronary Intervention/adverse effects MH - Morphine Derivatives MH - Treatment Outcome OTO - NOTNLM OT - Animal models OT - Aspirin OT - Humans OT - Infarct size OT - Postconditioning OT - Reperfusion injury OT - STEMI OT - Statins EDAT- 2022/02/17 06:00 MHDA- 2022/11/16 06:00 CRDT- 2022/02/16 12:16 PHST- 2022/02/11 00:00 [accepted] PHST- 2022/02/17 06:00 [pubmed] PHST- 2022/11/16 06:00 [medline] PHST- 2022/02/16 12:16 [entrez] AID - 10.1007/s10557-022-07327-x [pii] AID - 10.1007/s10557-022-07327-x [doi] PST - ppublish SO - Cardiovasc Drugs Ther. 2022 Dec;36(6):1221-1238. doi: 10.1007/s10557-022-07327-x. Epub 2022 Feb 16.