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  • Title: Impact of Metabolic Syndrome and/or Diabetes Mellitus on Left Ventricular Mass and Remodeling in Patients With Aortic Stenosis Before and After Aortic Valve Replacement.
    Author: Guzzetti E, Annabi MS, Ong G, Zenses AS, Dagenais F, Tastet L, Salaun E, Shen M, Piché ME, Poirier P, Voisine P, Pibarot P, Clavel MA.
    Journal: Am J Cardiol; 2019 Jan 01; 123(1):123-131. PubMed ID: 30385031.
    Abstract:
    In aortic stenosis (AS), metabolic syndrome (MetS), and diabetes mellitus (DM) are associated with more pronounced left ventricular (LV) hypertrophy and more concentric remodeling. We aimed to assess the impact of MetS and DM on LV mass, remodeling, and LV mass regression after aortic valve replacement (AVR) in patients with severe AS. We included 177 patients with severe AS and preserved LV ejection fraction (>50%). All patients underwent a complete echocardiogram before and 1 year after AVR. Forty-seven (27%) patients had MetS, 37 (21%) DM, and 93 (52%) neither MetS nor DM (No MetS-DM). Before AVR, indexed LV mass was higher in MetS and DM groups compared with No MetS-DM group (56.1 ± 14.2, 56.2 ± 18.2 vs 49.2 ± 14.1 g/m2.7, respectively; p <0.01). Prevalence of LV hypertrophy was higher in MetS and DM than in No MetS-DM patients (66%, 65% vs 44%, p <0.01) as well as LV mass to end-diastolic volume ratio (2.10 ± 0.44 and 2.21 ± 0.63 vs 1.96 ± 0.41 g/ml, respectively, p = 0.03). After multivariate analysis, DM and MetS were independently associated with higher baseline LV mass (p <0.05). One year after AVR, decrease in LV mass was significant (p <0.001) in all 3 groups. MetS was independently associated with less LV mass regression and higher LV mass 1 year after AVR. Therefore, MetS and DM patients showed more residual LV hypertrophy than those with No MetS-DM (57%, 38%, and 17%, p <0.01). In conclusion, MetS and DM were associated with higher preoperative LV mass, more LV hypertrophy, and more concentric remodeling. One year after AVR, MetS showed less significant LV mass regression and both DM and MetS persisted with more residual LV hypertrophy.
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