ArticleOpen heart2026
Left ventricular thrombus in Takotsubo syndrome and ST-elevation myocardial infarction.
Article in Open heart, 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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17 authors.
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Abstract
backgroundBoth Takotsubo syndrome (TS) and ST-elevation myocardial infarction (STEMI) are conditions characterised by the acute onset of left ventricular (LV) dysfunction. While LV thrombus is a known complication of LV dysfunction, its epidemiology in these two patient groups remains poorly understood.
methodsWe used data from the Stunning in Takotsubo versus Acute Myocardial Infarction (STAMI) study, which prospectively enrolled patients with TS and STEMI at Sahlgrenska University Hospital. Serial echocardiography was performed on admission and on days 1, 2, 3, 7, 14 and 30. Predictors of LV thrombus were identified using Cox regression analyses.
results314 patients were included; 68 with TS, 148 with anterior STEMI and 98 with non-anterior STEMI. Mean LV ejection fraction (LVEF) at admission was 39% (95% CI 35.8 to 42.2) in TS, 46.7% (95% CI 43.3 to 50.1) in anterior STEMI and 52.8% (95% CI 48.9 to 56.7) in non-anterior STEMI. LV thrombus occurred in 20 of 246 (8.1%) STEMI patients but in none of the TS patients. All but one LV thrombus was found in anterior STEMI. All LV thrombi in anterior STEMI were detected within 7 days, while the single non-anterior LV thrombus was found on day 30. All patients with LV thrombi received anticoagulation. Predictors of LV thrombus included lower LVEF and higher troponin levels.
conclusionsDespite more severe LV dysfunction in TS compared with STEMI, LV thrombus was exclusively found in STEMI patients. Almost all LV thrombi were found in anterior STEMI within the first week and showed a high-resolution rate at 30 days. Our findings highlight pathophysiological differences between these two conditions, warranting further investigation and implications for differing surveillance needs after TS and STEMI.
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