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Comparison of left atrial size and function in hypertrophic cardiomyopathy and in Fabry disease with left ventricular hypertrophy.
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- Author(s): Saccheri, María Cristina; Cianciulli, Tomás Francisco; Challapa Licidio, Wilde; Lax, Jorge A.; Beck, Martín A.; Morita, Luis A.; Gagliardi, Juan A.; AADELFA
- Source:
Echocardiography; May2018, Vol. 35 Issue 5, p643-650, 8p- Subject Terms:
- Source:
- Additional Information
- Abstract: Background: Fabry disease (FD) and hypertrophic cardiomyopathy (HCM) are two diseases with a different pathophysiology, both cause left ventricular hypertrophy (LVH) and myocardial fibrosis. Although remodeling and systolic dysfunction of the left atrium (LA) are associated with atrial fibrillation and stroke in HCM, changes in the size and function of the LA have not been well studied in FD with LVH. Methods: The following groups were studied prospectively, and their respective findings compared: 19 patients with non‐obstructive HCM (Group I), 20 patients with a diagnosis of Fabry cardiomyopathy (Group II), and 20 normal subjects matched for sex and age (Group III). Left ventricular mass index was measured using Devereux’ formula, left atrial volume with Simpson’s biplane method and left atrial mechanical function, including strain and strain rate, was measured using the speckle tracking technique. Strain and strain rate of the reservoir were measured during the three phases: reservoir (SR S), passive conduit (SR E) and atrial contraction (SR A). Results: Patients with HCM had a larger left atrial volume than patients with FD (48.16 ± 14.3 mL/m2 vs 38.9 ± 14.9 mL/m2 respectively, P < .001), but in both disorders there was a severe decrease in left atrial function: reservoir strain in the apical four‐chamber view: 17.47% in HCM vs 22.5% in FD, P = .24), strain rate in the apical chamber view: SR A: −0.80/seconds in HCM vs −1.04/seconds in FD (P = .88), SR S: 0.69/seconds in HCM vs 0.93 in FD (P = .12), SR E: −0.80 seconds in HCM vs −0.97/seconds in FD (P = .18). Conclusions: In this echocardiographic study we used speckle tracking to assess left atrial mechanical function and showed that FD is associated to an atrial cardiomyopathy, affecting the three phasic functions of the LA. Although in patients with HCM left atrial volume is larger than in patients with FD, both disorders exhibit severe decrease in left atrial function. These findings should be considered, given the potentially serious complications that can occur with the two diseases. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Echocardiography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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