P824 Impact of cardiovascular risk factors and treatment strategies on the presence of intramyocardial hemorrhage visualized by magnetic resonance in patients with reperfused infarction

Abstract Intramyocardial hemorrhage (IMH) is considered a marker of tissue damage severity in patients with reperfused ST-segment elevation myocardial infarction (STEMI) and has been associated with a poor prognosis despite successful revascularization of the culprit artery . We aim to study the impact of cardiovascular risk factors and treatment strategies on the presence of IMH studied with T2* -w cardiovascular magnetic resonance (CMR) in this clinical setting METHODS A prospective observational study including patients with repefused STEMI who underwent an MRI during the first week post-revascularization were conducted . The presence of IMH was analyzed in ECG triggered T2 * w sequences as presence of hipointensity area . Clinical data including cardiovascular risk factors and treatment strategies at cath lab were studied. RESULTS 94 patients with reperfused STEMI were included. Demographic data are shown at the the table. No significant association was observed between the presence of IMH and the different treatment strategies used. All data were introduced in a multivariate model including presence of thrombus, total ischemia time and culprit coronary artery. The analysis showed previous infarction as an independent risk factor (OR: 6 p = 0.03, CI: 1.1-29) while history of hypertension (OR: 0.9, p = 0.04, CI: 0.1- 0.9) and systolic blood pressure showed independent protective effect (OR: 0.3 p = 0.02 IC: 0.9-0.99.) CONCLUSIONS. 1. Previous infarction was shown to be an independent risk factor for IMH . 2. Arterial hypertension and systolic blood pressure showed a protective effect. Age (years) 62 ±13 Male sex 72 (77) Diabetes mellitus 32 (34) Hypertension 53 (56) Hyperlipidaemia 52 (55) Current or prior smoking 55 (58) Time to reperfusion 203 (142-300) Infarct-related artery LAD 38 (41) RCA 49 (52) Cx 7 (7) Infarct size (% LV mass) 18 ± 11 MO (% LV mass) 3.15 (1.44-5.48) Abstract P824 Figure. Intramyocardial hemorraghe T2* sequences