5010Prognostic value of strain assessed by tissue tracking cardiovascular magnetic resonance soon after a first ST-segment elevation myocardial infarction

Abstract:

Objectives: To evaluate the prognostic value of strain assessed by tissue-tracking (TT) cardiovascular magnetic resonance (CMR) soon after ST-segment elevation myocardial infarction (STEMI). Background: After STEMI, the prognostic value of myocardial strain assessed by TT-CMR once adjusted for clinical and traditional CMR parameters is unknown. Methods: We studied 323 patients submitted to CMR 1 week post-STEMI. Global (average of peak segmental values,%) and segmental (number of altered segments) longitudinal (LS), radial and circumferential strain was assessed using TT-CMR. Global and segmental strain cut-off values were derived from 32 control patients. CMR-derived left ventricular ejection fraction, microvascular obstruction and infarct size were determined. Results were validated in an external cohort made up of 190 STEMI patients. Results: During a median follow-up of 1085 days, 50 first …

Año de publicación:

2017

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Fuente:

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