ArticleWorld journal of cardiology2026
Impact of total occlusion of the infarct-related coronary artery on mortality of 2483 patients with acute myocardial infarction.
Article in World journal of cardiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe electrocardiographic (ECG) presentation, with or without ST-segment elevation, has traditionally been the cornerstone for classifying and managing acute myocardial infarction (AMI). However, up to 20% of non-ST-segment elevation myocardial infarction (NSTEMI) patients may have a completely occluded infarct-related artery, which could have important prognostic implications regardless of ECG findings.
aimTo determine the prevalence, predictors, and impact of total occlusion of the infarct-related coronary artery on short-term mortality.
methodsWe conducted a prospective, single-center cohort study that included consecutive patients treated for AMI with percutaneous coronary intervention (PCI) at the University Hospital Centre Sestre Milosrdnice in Zagreb, Croatia, between 2011 and 2018. Patients were divided into two groups based on the patency of the infarct-related artery: Those with an occluded coronary artery (OCA) and those with a patent coronary artery (PCA).
resultsAmong the 2483 patients (71.6% male) treated with PCI for AMI, 67.9% had an OCA, while 32.1% had a patent artery (PCA). Notably, 35.5% of NSTEMI patients had an OCA. Patients with OCA were younger, had fewer chronic comorbidities, and presented with more severe clinical symptoms. In contrast, patients with PCA were older and exhibited more extensive chronic atherosclerotic disease. Thirty-day mortality was significantly higher in the OCA group (7.29%) compared to the PCA group (3.52%,
conclusionCulprit-artery occlusion is a strong, independent determinant of short-term mortality. An occlusion-aware perspective refines risk stratification beyond ECG presentation and supports earlier invasive evaluation in NSTEMI patients with clinical/ECG signs of possible occlusion.
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