PMID- 38286569 OWN - NLM STAT- MEDLINE DCOM- 20240131 LR - 20240206 IS - 2053-3624 (Print) IS - 2053-3624 (Electronic) IS - 2053-3624 (Linking) VI - 11 IP - 1 DP - 2024 Jan 29 TI - Effect of ischaemic postconditioning on markers of myocardial injury in ST-elevation myocardial infarction: a meta-analysis. LID - 10.1136/openhrt-2023-002281 [doi] LID - e002281 AB - OBJECTIVES: This study aimed to perform a meta-analysis of the short-term impact of ischaemic postconditioning (IPoC) on myocardial injury in ST elevation myocardial infarction (STEMI) using surrogate cardiac biomarkers. METHODS: Eligible studies were identified using several article databases. Randomised controlled trials published between 1 January 2000 and 1 December 2021 comparing IPoC to standard of therapy in STEMI patients were included in the search. Outcomes included surrogates of myocardial injury, specifically peak troponin, creatine-kinase (CK) and CK myoglobin binding (CK-MB) enzyme levels. RESULTS: 11 articles involving 1273 patients reported on CK-MB and 8 studies involving 505 patients reported on CK. Few studies used troponin as an outcome, thus, a subanalysis of troponin dynamics was not performed. Meta-regression analysis demonstrated no significant effect of IPoC on peak CK-MB (effect size -0.41, 95% CI -1.15 to 0.34) or peak CK (effect size -0.42, 95% CI -1.20 to 0.36). Linear regression analysis demonstrated a significant correlation between a history of smoking and CK-MB in the IPoC group (p=0.038). CONCLUSIONS: IPoC does not seem to protect against myocardial injury in STEMI, except possibly in smokers. These results resonate with some studies using imaging techniques to ascertain myocardial damage. More research using troponin and cardiac imaging should be pursued to better assess the effects of IPoC on cardiovascular outcomes in STEMI. CI - (c) Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. FAU - Bergman, Idan AU - Bergman I AUID- ORCID: 0000-0002-4556-2547 AD - Rabin Medical Center Beilinson Hospital, Petah Tikva, Israel idanbergman@gmail.com. AD - Tel Aviv University Sackler Faculty of Medicine, Tel Aviv, Israel. FAU - Gelikas, Shaul AU - Gelikas S AD - Sheba Medical Center, Tel Hashomer, Israel. FAU - Wexler, Yehuda AU - Wexler Y AD - Technion Israel Institute of Technology The Ruth and Bruce Rappaport Faculty of Medicine, Haifa, Israel. FAU - Braver, Omri AU - Braver O AD - Barzilai Medical Center, Ashkelon, Israel. AD - Ben-Gurion University of the Negev, Beer-Sheva, Israel. FAU - Boyle, Dennis AU - Boyle D AD - Westchester Medical Center, Valhalla, New York, USA. FAU - Nussinovitch, Udi AU - Nussinovitch U AD - Tel Aviv University Sackler Faculty of Medicine, Tel Aviv, Israel. LA - eng PT - Journal Article PT - Meta-Analysis DEP - 20240129 PL - England TA - Open Heart JT - Open heart JID - 101631219 RN - EC 2.7.3.2 (Creatine Kinase, MB Form) RN - EC 2.7.3.2 (Creatine Kinase) RN - 0 (Troponin) RN - 0 (Biomarkers) SB - IM MH - Humans MH - *ST Elevation Myocardial Infarction/diagnosis/therapy MH - *Myocardial Infarction/therapy MH - *Ischemic Postconditioning MH - Myocardium MH - Creatine Kinase, MB Form MH - Creatine Kinase MH - Troponin MH - Biomarkers MH - Randomized Controlled Trials as Topic PMC - PMC10826564 OTO - NOTNLM OT - Acute Coronary Syndrome OT - Coronary Angiography OT - Coronary Stenosis COIS- Competing interests: None declared. EDAT- 2024/01/30 00:42 MHDA- 2024/01/31 06:43 PMCR- 2024/01/29 CRDT- 2024/01/29 21:02 PHST- 2023/08/25 00:00 [received] PHST- 2023/10/31 00:00 [accepted] PHST- 2024/01/31 06:43 [medline] PHST- 2024/01/30 00:42 [pubmed] PHST- 2024/01/29 21:02 [entrez] PHST- 2024/01/29 00:00 [pmc-release] AID - openhrt-2023-002281 [pii] AID - 10.1136/openhrt-2023-002281 [doi] PST - epublish SO - Open Heart. 2024 Jan 29;11(1):e002281. doi: 10.1136/openhrt-2023-002281.