ACUTE CORONARY SYNDROME: EARLY DIAGNOSIS AND THERAPEUTIC MANAGEMENT IN EMERGENCY DEPARTMENT
DOI:
https://doi.org/10.56238/levv17n57-046Keywords:
Acute Coronary Syndrome, Early Diagnosis, Emergency Medicine, Myocardial Infarction, TherapeuticsAbstract
Cardiovascular diseases remain the leading cause of global morbidity and mortality, and acute coronary syndrome (ACS) represents a major challenge in urgent and emergency care services. This narrative review synthesizes evidence published between 2021 and 2025 on the early diagnosis and management of ACS in emergency settings. Contemporary diagnosis is based on the integration of clinical assessment, a 12-lead electrocardiogram, and high-sensitivity cardiac biomarkers, especially troponin. The adoption of accelerated diagnostic algorithms (0/1 h and 0/2 h) has increased the efficiency and safety of clinical workflows, allowing reliable exclusion of acute myocardial infarction in low-risk patients when applied in conjunction with clinical judgment. Risk stratification is improved through validated scores, particularly the HEART score for short-term mortality prediction and the T-MACS score for identifying patients at higher risk of major adverse cardiovascular events. In ACS without persistent ST-segment elevation, the timing of coronary angiography is determined by the ischemic risk profile, with immediate invasive strategy recommended for very high-risk patients and early invasive approach for high-risk individuals. Initial therapeutic management includes antiplatelet therapy and anticoagulation, balancing ischemic benefit and bleeding risk. Challenges persist due to the heterogeneity of clinical presentations and disparities in care, especially among women and older adults. Overall, recent advances support a care model increasingly guided by risk stratification, standardized protocols, and technological integration.
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References
Akman, G., et al. (2023). T-MACS score vs HEART score identification of major adverse cardiac events in the emergency department. American Journal of Emergency Medicine, 64, 21–25. https://doi.org/10.1016/j.ajem.2022.11.015 DOI: https://doi.org/10.1016/j.ajem.2022.11.015
Aktemur, M. R., et al. (2025). Comparative evaluation of HEART, T-MACS, and HE-MACS scores for risk stratification and management of patients with chest pain in the emergency department. Medicine, 104(6), Article e41432. https://doi.org/10.1097/MD.0000000000041432 DOI: https://doi.org/10.1097/MD.0000000000041432
Al-Zaiti, S. S., et al. (2023). Machine learning for ECG diagnosis and risk stratification of occlusion myocardial infarction. Nature Medicine, 29, 1804–1813. https://doi.org/10.1038/s41591-023-02396-3 DOI: https://doi.org/10.1038/s41591-023-02396-3
Ashburn, N. P., et al. (2023). Performance of the European Society of Cardiology 0/1-hour algorithm with high-sensitivity cardiac troponin T among patients with known coronary artery disease. JAMA Cardiology, 8(4), 347–356. https://doi.org/10.1001/jamacardio.2023.0031 DOI: https://doi.org/10.1001/jamacardio.2023.0031
Ataş, I., et al. (2025). Comparison of pretreatment in European Society of Cardiology acute coronary syndrome guidelines. Western Journal of Emergency Medicine, 26(6), 1679–1687. https://doi.org/10.5811/westjem.43528 DOI: https://doi.org/10.5811/WESTJEM.43528
Bergmark, B. A., et al. (2022). Acute coronary syndromes. The Lancet, 399(10332), 1347–1358. https://doi.org/10.1016/S0140-6736(21)02391-6 DOI: https://doi.org/10.1016/S0140-6736(21)02391-6
Bhatt, D. L., Lopes, R. D., & Harrington, R. A. (2022). Diagnosis and treatment of acute coronary syndromes: A review. JAMA, 327(7), 662–675. https://doi.org/10.1001/jama.2022.0358 DOI: https://doi.org/10.1001/jama.2022.0358
Biscaglia, S., et al. (2023). Complete or culprit-only PCI in older patients with myocardial infarction. New England Journal of Medicine, 389(10), 889–898. https://doi.org/10.1056/NEJMoa2300468 DOI: https://doi.org/10.1056/NEJMoa2300468
Byrne, R. A., et al. (2023). 2023 ESC Guidelines for the management of acute coronary syndromes. European Heart Journal, 44(38), 3720–3826. https://doi.org/10.1093/eurheartj/ehad191 DOI: https://doi.org/10.1093/eurheartj/ehad191
Cavalier, J. S., et al. (2025). Stress cardiovascular magnetic resonance imaging in intermediate-risk emergency department patients with abnormal high-sensitivity troponin. Journal of Cardiovascular Magnetic Resonance, 27, Article 101851. https://doi.org/10.1016/j.jocmr.2025.101851 DOI: https://doi.org/10.1016/j.jocmr.2025.101851
Cesar, L. A. M., et al. (2025). Diretriz de síndrome coronariana crônica – 2025. Arquivos Brasileiros de Cardiologia, 122(9), Article e20250619. https://doi.org/10.36660/abc.20250619 DOI: https://doi.org/10.36660/abc.20250619
De Barros e Silva, P. G. M., et al. (2025). Diretriz brasileira de atendimento à dor torácica na unidade de emergência – 2025. Arquivos Brasileiros de Cardiologia, 122(9), Article e20250620. https://doi.org/10.36660/abc.20250620 DOI: https://doi.org/10.36660/abc.20250620
Diletti, R., et al. (2023). Immediate versus staged complete revascularization in patients presenting with acute coronary syndrome and multivessel disease (BIOVASC): A prospective, open-label, non-inferiority, randomized trial. The Lancet, 401(10383), 1172–1182. https://doi.org/10.1016/S0140-6736(23)00351-3 DOI: https://doi.org/10.1016/S0140-6736(23)00351-3
Doudesis, D., et al. (2023). Machine learning for diagnosis of myocardial infarction using cardiac troponin concentrations. Nature Medicine, 29, 1201–1210. https://doi.org/10.1038/s41591-023-02325-4 DOI: https://doi.org/10.1038/s41591-023-02325-4
Engström, A., Mokhtari, A., & Ekelund, U. (2024). Direct comparison of the European Society of Cardiology 0/1-hour vs. 0/2-hour algorithms in patients with acute chest pain. Journal of Emergency Medicine, 66(6), e651–e659. https://doi.org/10.1016/j.jemermed.2024.02.004 DOI: https://doi.org/10.1016/j.jemermed.2024.02.004
Gulati, M., et al. (2021). 2021 AHA/ACC/ASE/CHEST/SAEM/SCCT/SCMR Guideline for the evaluation and diagnosis of chest pain: A report of the American College of Cardiology/American Heart Association joint committee on clinical practice guidelines. Circulation, 144(22), e368–e454. https://doi.org/10.1161/CIR.0000000000001029 DOI: https://doi.org/10.1161/CIR.0000000000001047
Kraler, S., et al. (2025). Acute coronary syndromes: Mechanisms, challenges, and new opportunities. European Heart Journal, 46(29), 2866–2889. https://doi.org/10.1093/eurheartj/ehaf289 DOI: https://doi.org/10.1093/eurheartj/ehaf289
Lambrou, K., et al. (2023). Impacts of high sensitivity troponin T reporting on care and outcomes in clinical practice: Interactions between low troponin concentrations and participant sex within two randomized clinical trials. International Journal of Cardiology, 393, Article 131396. https://doi.org/10.1016/j.ijcard.2023.131396 DOI: https://doi.org/10.1016/j.ijcard.2023.131396
Lima Filho, M. O., et al. (2024). Estratégia invasiva na síndrome coronária aguda sem supradesnível do segmento ST. Revista da Sociedade de Cardiologia do Estado de São Paulo, 34(2), 254–261. https://doi.org/10.29381/0103-8559/20243403254-61 DOI: https://doi.org/10.29381/0103-8559/20243403254-61
Møller, J. E., et al. (2024). Microaxial flow pump or standard care in infarct-related cardiogenic shock. New England Journal of Medicine, 390(15), 1382–1393. https://doi.org/10.1056/NEJMoa2312572 DOI: https://doi.org/10.1056/NEJMoa2312572
Rao, S. V., et al. (2025). 2025 ACC/AHA/ACEP/NAEMSP/SCAI Guideline for the management of patients with acute coronary syndromes. Journal of the American College of Cardiology, 85(22), 2135–2237. https://doi.org/10.1016/j.jacc.2024.11.009 DOI: https://doi.org/10.1016/j.jacc.2024.11.009
Reynolds, H. R., et al. (2021). Coronary optical coherence tomography and cardiac magnetic resonance imaging to determine underlying causes of myocardial infarction with nonobstructive coronary arteries in women. Circulation, 143(7), 624–640. https://doi.org/10.1161/CIRCULATIONAHA.120.052008 DOI: https://doi.org/10.1161/CIRCULATIONAHA.121.055516
Sandoval, Y., et al. (2022). High-sensitivity cardiac troponin and the 2021 AHA/ACC/ASE/CHEST/SAEM/SCCT/SCMR guidelines for the evaluation and diagnosis of acute chest pain. Circulation, 146(7), 569–581. https://doi.org/10.1161/CIRCULATIONAHA.122.059678 DOI: https://doi.org/10.1161/CIRCULATIONAHA.122.059678
Stone, G. W., et al. (2024). Intravascular imaging-guided coronary drug-eluting stent implantation: An updated network meta-analysis. The Lancet, 403(10429), 824–837. https://doi.org/10.1016/S0140-6736(23)02454-6 DOI: https://doi.org/10.1016/S0140-6736(23)02454-6
Thiele, H., et al. (2023). Extracorporeal life support in infarct-related cardiogenic shock. New England Journal of Medicine, 389(14), 1286–1297. https://doi.org/10.1056/NEJMoa2307227 DOI: https://doi.org/10.1056/NEJMoa2307227
Todd, F., Duff, J., & Carlton, E. (2022). Identifying low-risk chest pain in the emergency department without troponin testing: A validation study of the HE-MACS and HEAR risk scores. Emergency Medicine Journal, 39, 515–518. https://doi.org/10.1136/emermed-2021-211669 DOI: https://doi.org/10.1136/emermed-2021-211669
Wenzl, F. A., et al. (2022). Sex-specific evaluation and redevelopment of the GRACE score in non-ST-segment elevation acute coronary syndromes in populations from the UK and Switzerland: A multinational analysis with external cohort validation. The Lancet, 400(10354), 744–756. https://doi.org/10.1016/S0140-6736(22)01483-0 DOI: https://doi.org/10.1016/S0140-6736(22)01483-0
Zou, Y., et al. (2021). Sex-differences in the management and clinical outcome among patients with acute coronary syndrome. BMC Cardiovascular Disorders, 21, Article 609. https://doi.org/10.1186/s12872-021-02433-4 DOI: https://doi.org/10.1186/s12872-021-02433-4