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Utility of feature tracking cardiac magnetic resonance in significant chronic aortic regurgitation
Sub-topic : Cardiac Magnetic Resonance: Valve Disease
Session type : Poster Session
Authors : TM Matajira Chia (Salamanca,ES), S Merchan Gomez (Salamanca,ES), J Urmeneta Ulloa (Salamanca,ES), L Alvarez Rodriguez (Salamanca,ES), M Gonzalez Ruiz (Salamanca,ES), A Martin Garcia (Salamanca,ES), E Diaz Pelaez (Salamanca,ES), M Barreiro Perez (Salamanca,ES), M Delgado Gallego (Salamanca,ES), M Bastos Hernandez (Salamanca,ES), PL Sanchez (Salamanca,ES)
Current guidelines recomend aortic valve surgery in severe regurgitation aortic (AR) in asymptomatic patients with preserved LVEF based on evidence of significant dilation of the left ventricle (LV), in some cases it is insufficient. Feature tracking (FT) cardiac magnetic resonance (CMR) can help us for an early detection and, it allows you to choose the best time of surgery.
Analyze added forecast value of FT in patients with AR. We also studied whether there were differences in terms of FT between the different etiologies of AR.
METHODS Retrospective observational study in a cohort of patients with severe AR (regurgitant fraction > 33 %) match with health subjets control group.
RESULTS Group I; 72,3 % were in functional NYHA class I .Regarding the CRM data, there were significant differences in LVEF (lower in the AR group), LV volume and global myocardial mass (higher in AR). On the subjetc of FT, there were significant differences in radial (RS) and longitudinal strain (LS) (lower in the AR group), but not in the circumferential strain (CS). We analyzed each of the etiologies of the AR without finding significant differences.
In the group of patients with AR, 66.2% continued clinical follow-up, 30.8% underwent surgery. There were no significant differences in the rate of surgeries in relation to RS, LS or CS(p 0.068, p 0.083, p 0.434, respectively), or in mortality in relation to RS, LS or CS (p 0.812, p 0.741, p 0.547).
Patients with AR have worse values of strain. This fact could allow to detect patients with myocardial damage and indicate surgery earlier. There are no differences in strain depending on AR etiology
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