ArticleClinical research in cardiology : official journal of the German Cardiac Society2026
Occlusion myocardial infarction in type I NSTEMI: prevalence, characteristics, management, and long-term outcome.
Article in Clinical research in cardiology : official journal of the German Cardiac Society, 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 prevalence, characteristics, management, and long-term outcome of patients with non-ST-segment elevation myocardial infarction (NSTEMI) due to a completely occluded culprit coronary artery (NSTEMI-OMI) remain insufficiently characterised.
methodsIn this international multicentre study, consecutive patients with centrally adjudicated type I NSTEMI were classified as NSTEMI-OMI if they had a TIMI flow grade of 0 or 1 or grade 2 with severe coronary narrowing (> 70%) and a high-sensitivity cardiac troponin T (hs-cTnT) ≥ 500 ng/L. Prospectively recorded chest pain characteristics, 12-lead ECG, serial hs-cTnT concentrations, time to coronary angiography/revascularisation, and 5-year mortality were compared in patients with NSTEMI-OMI versus other type I NSTEMI (NSTEMI-NOMI).
resultsAmong 801 patients with type I NSTEMI (median age 68 years, 22.2% female), 251 patients (31.3%) had NSTEMI-OMI. Patients with NSTEMI-OMI presented more often with persistent chest pain (56.1% vs. 37.9%, p < 0.001), more often had ST-segment depression (34.3% vs. 23.0%, p < 0.001), and exhibited higher and faster rising hs-cTnT concentrations. Time from admission to coronary angiography (median 7.2 h [IQR 4.7, 21.8] vs. 19.6 h [IQR 6.2, 27.9], p < 0.001) and coronary revascularisation (median 8.2 h [IQR 4.9, 24.0] vs. 22.0 h [IQR 6.3, 46.1], p < 0.001) were both significantly shorter in patients with NSTEMI-OMI versus NSTEMI-NOMI. Five-year mortality was comparable in patients with NSTEMI-OMI versus NSTEMI-NOMI (adjHR 1.13 [95% CI 0.78-1.63], p = 0.51).
conclusionOne in three patients with type I NSTEMI had NSTEMI-OMI. These patients more often present with very high-risk clinical, ECG, and biomarker features and receive earlier invasive management. Likely related to the latter, 5-year mortality was similar between NSTEMI-OMI and NSTEMI-NOMI.
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