PMID- 31759688 OWN - NLM STAT- MEDLINE DCOM- 20210113 LR - 20210113 IS - 1874-1754 (Electronic) IS - 0167-5273 (Linking) VI - 303 DP - 2020 Mar 15 TI - Validation of contemporary electrocardiographic indices of area at risk and infarct size in acute ST elevation myocardial infarction (STEMI). PG - 1-7 LID - S0167-5273(19)33112-2 [pii] LID - 10.1016/j.ijcard.2019.10.041 [doi] AB - BACKGROUND: Electrocardiographic (ECG) methods to assess area at risk (AAR) and infarct size (IS) in patients with ST-elevation myocardial infarction (STEMI) have been previously established but not validated against contemporary benchmark Cardiac Magnetic Resonance (CMR) measures. We compared ECG-determined and CMR-determined measures for (a) AAR, (b) IS, and (c) myocardial salvage. METHODS: Sixty patients with ECG evidence of STEMI and CMR imaging performed within 13 days were included. The ECG-determined (a) AAR scores (Aldrich and Wilkins), (b) IS (Selvester score), and (c) myocardial salvage (i.e. [AAR-IS] / AAR x 100%), were compared with CMR-determined measures. RESULTS: Compared with CMR-determined AAR, both the Wilkins & Aldrich scores underestimated AAR, although the Wilkins (r = 0.72, p < 0.001) showed a better correlation than the Aldrich (r = 0.54, p < 0.001). Bland-Altman analysis revealed a bias of 2.6% (95% limits of agreement: 18.5%, -13.3%) for the Wilkins and 5.9% (95% limits of agreement: 25.6%, -13.8%) for the Aldrich. Estimation of IS was similar between the Selvester score and CMR, with good correlation (r = 0.77, p < 0.001) and agreement (fixed bias 0.4%, 95% limits of agreement 20.8%, -15.5%). However, ECG-determined myocardial salvage significantly underestimated CMR-determined myocardial salvage, with an inverse correlation (r = -0.33, p = 0.01). CONCLUSIONS: The Wilkins score is superior to Aldrich score as an ECG-AAR index, Selvester score is a reasonable ECG estimate of infarct size, though ECG derived myocardial salvage does not have enough accuracy to be used in the clinical setting; it may be an inexpensive surrogate for myocardial salvage in large research studies. Further validation and prognostic studies are required. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Du, Yang Timothy AU - Du YT AD - Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Central Adelaide Local Health Network, Adelaide, South Australia, Australia. FAU - Pasupathy, Sivabaskari AU - Pasupathy S AD - Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Central Adelaide Local Health Network, Adelaide, South Australia, Australia. FAU - Air, Tracy AU - Air T AD - Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia. FAU - Neil, Christopher AU - Neil C AD - Department of Medicine, Western Health, University of Melbourne, Melbourne, Australia; Department of Cardiology, Western Health, Melbourne, Australia. FAU - Beltrame, John F AU - Beltrame JF AD - Discipline of Medicine, University of Adelaide, Adelaide, South Australia, Australia; Central Adelaide Local Health Network, Adelaide, South Australia, Australia. Electronic address: john.beltrame@adelaide.edu.au. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20191113 PL - Netherlands TA - Int J Cardiol JT - International journal of cardiology JID - 8200291 SB - IM CIN - Int J Cardiol. 2020 Mar 15;303:14-15. PMID: 31882358 MH - Australia/epidemiology MH - Coronary Angiography MH - Electrocardiography/*methods MH - Female MH - Follow-Up Studies MH - Heart Ventricles/*diagnostic imaging/physiopathology MH - Humans MH - Magnetic Resonance Imaging, Cine/methods MH - Male MH - Middle Aged MH - Prospective Studies MH - Risk Assessment/*methods MH - Risk Factors MH - ST Elevation Myocardial Infarction/diagnosis/epidemiology/*physiopathology MH - Severity of Illness Index MH - Survival Rate/trends COIS- Declaration of competing interest The authors report no relationships that could be construed as a conflict of interest. EDAT- 2019/11/25 06:00 MHDA- 2021/01/14 06:00 CRDT- 2019/11/25 06:00 PHST- 2019/06/17 00:00 [received] PHST- 2019/10/16 00:00 [revised] PHST- 2019/10/24 00:00 [accepted] PHST- 2019/11/25 06:00 [pubmed] PHST- 2021/01/14 06:00 [medline] PHST- 2019/11/25 06:00 [entrez] AID - S0167-5273(19)33112-2 [pii] AID - 10.1016/j.ijcard.2019.10.041 [doi] PST - ppublish SO - Int J Cardiol. 2020 Mar 15;303:1-7. doi: 10.1016/j.ijcard.2019.10.041. Epub 2019 Nov 13.