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Funding Acknowledgements VII Convocatoria del Banco de Santander and Alfonso X el Sabio University. Background Detection of symptoms in geriatric population with aortic stenosis (AS) is challenging, especially when they associate other comorbidities or frailty. Left ventricular global longitudinal strain (GLS) occurs before left ventricular ejection fraction impairment and could be useful for risk stratification and management of these patients. Purpose We sought to analyze the usefulness of GLS for predicting major cardiovascular adverse events (MACEs) in geriatric patients with asymptomatic severe AS. Material and Methods: Prospective study on 54 patients older than 70 years old with severe asymptomatic AS. Patient evaluation included biochemistry tests, electrocardiogram and echocardiography. We use a GLS cut-off point of 18% to dichotomize patients. Outcomes were defined as the composite of MACEs – occurrence of death from any cause, hospitalization for heart failure, appearance of symptoms or change in treatment. Results The mean age was 83.2 ± 7.1, with 60.4% of women. 24.5% showed atrial fibrillation. At 6 months of follow-up, 33% of patients reached the endpoint: 5.6% CHF, 11.1% death, 3.7% symptoms without changes in management and 13% were referred to an invasive treatment. The event-free survival rate at 6 months for the global population was 83%. 41.5 % of the subjects had GLS &amp;lt; 18%. Kaplan Meier analysis showed that the probability of freedom from MACEs was not significant in patients with lower GLS (Log Rank p = 0.39). In the multivariate analysis only AVA was an inverse predictor of events (AVA) HR 0.05 (95% CI 0.007- 0.471, p &amp;lt; 0.05). Conclusions The value of GLS was not a predictor of short term events in geriatric patients. Only assessment of AVA was an independent marker of MACES and in this kind of subjects. Charasteristics of the global population Global N = 53 (%) GLS ≥ 18 N = 31 (58.5%) GLS &amp;lt; 18 N = 22 (41.5%) (p) HBP 42 (79.2) 27 (87.1) 19 (82.6) 0.09 Atrial fibrillation 13 (24.5) 6 (19.4) 7 (31.8) 0.29 CVD 6 (11.3) 1 (3.2) 5 (22.7) 0.02 LVEF: Normal &amp;gt;50% 48 (92) 31 (100) 17 (77.2) 0.05 Peak velocity 3.72 ± 0.72 3.81 ± 0.71 3.60 ± 0.74 0.315 Mean gradient 34.01 ± 14.06 35.61 ± 13.54 32.09 ± 15.07 0.29 Integral ratio 0.25 ± 0.08 0.26 ± 0.09 0.25 ± 0.08 0.83 AVA 0.8 ± 0.26 0.78 ± 0.27 0.83 ± 0.26 0.651 Indexed AVA 0.48 ± 0.16 0.48 ± 0.17 0.48 ± 0.16 0.9 AVA Aortic valve area; CVD: cerebro vascular disease; HBP: High blood presure; LVEF: left ventricule ejection fraction. Abstract P905 Figure. Kapplan-Meier event-free survival curves

P905 Value of global longitudinal strain (GLS) in the short term prognosis of geriatric patients with asymptomatic severe aortic stenosis