Abstract

BARATTA, Sergio et al. Clinical Value of Systolic Strain Rate Utilization in the Assessment of Different Types of Left Ventricle Hypertrophy. Rev. argent. cardiol. [online]. 2007, vol.75, n.5, pp.367-373. ISSN 1850-3748.

Introduction Left ventricular hypertrophy (LVH) includes different etiologies, evolution status and prognosis. Systolic strain rate (SSR) or myocardial deformation assessment allows analyzing the regional systolic function by assessing myocardial shortening velocity throughout time, independently of the translation movement of the heart or pulling of neighboring structures. Objective To determine if the systolic strain rate is a useful resource to differentiate types of left ventricle hypertrophy. Material and methods Study population included four groups: Group 1 (G1, n=10): healthy sedentary volunteers; Group 2 (G2, n=21): highperformance athletes with left ventricle mass index increase (LVMI) >125 g/m²; Group 3 (G3, n=15): hypertensive patients according to VII JNC with LVMI >125 g/m² and Group 4 (G4, n=12): patients with hypertrophic cardiomyopathy (HCM), septum >15 mm and/or posterior septum/wall relation >1,5:1, without any cause. Results There were no differences between groups with increased LVMI in mesoparietal shortening fraction (p=0.3) or LVMI (p=0.6). SRS 01 sec (G1) 0.75 1/s. (G2) 0.87 1/s; (G3) 0.57 1/s; (G4) 0.29 1/s (p<0.001). SRS 02 sec (G1) 0.7 1/s, (G2) 0.52 1/s, (G3) 0.49 1/s (G4) 0.18 1/s (p<0.001). SRS 03 sec (G1) 0.57 1/s, (G2) 0.38 1/s, (G3) 0.25 1/s (G4) 0.11 1/s (p<0,002). SSR allows differentiating HCM in athletes during the systole. Conclusion Regional systolic shortening assessed by SSR is decreased in HCM. The use of this technique allows differentiating types of pathological hypertrophy from physiological hypertrophy.

Keywords : Echocardiography; Hypertrophy; Cardiomyopathy, Hypertrophic.

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