Preliminary clinical study of left ventricular myocardial strain in patients with non-ischemic dilated cardiomyopathy by three-dimensional speckle tracking imagingReportar como inadecuado




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Cardiovascular Ultrasound

, 10:8

First Online: 07 March 2012Received: 27 October 2011Accepted: 07 March 2012

Abstract

BackgroundNon-ischemic dilated cardiomyopathy DCM is the most common cardiomyopathy worldwide, with significant mortality. Correct evaluation of the patient-s myocardial function has important clinical significance in the diagnosis, therapeutic effect assessment and prognosis in non-ischemic DCM patients. This study evaluated the feasibility of three-dimensional speckle tracking imaging 3D-STE for assessment of the left ventricular myocardial strain in patients with non-ischemic dilated cardiomyopathy DCM.

MethodsApical full-volume images were acquired from 65 patients with non-ischemic DCM DCM group and 59 age-matched normal controls NC group, respectively. The following parameters were measured by 3D-STE: the peak systolic radial strain RS, circumferential strain CS, longitudinal strain LS of each segment. Then all the parameters were compared between the two groups.

ResultsThe peak systolic strain in different planes had certain regularities in normal groups, radial strain RS was the largest in the mid region, the smallest in the apical region, while circumferential strain CS and longitudinal strain LS increased from the basal to the apical region. In contrast, the regularity could not be applied to the DCM group. RS, CS, LS were significantly decreased in DCM group as compared with NC group P < 0.001 for all. The interobserver, intraobserver and test-retest reliability were acceptable.

Conclusions3D-STE is a reliable tool for evaluation of left ventricular myocardial strain in patients with non-ischemic DCM, with huge advantage in clinical application.

KeywordsEchocardiography Dilated cardiomyopathy Ventricular function left Three dimensional speckle-tracking imaging Electronic supplementary materialThe online version of this article doi:10.1186-1476-7120-10-8 contains supplementary material, which is available to authorized users.

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Autor: Fengxia Duan - Mingxing Xie - Xinfang Wang - Yuman Li - Lin He - Lan Jiang - Qian Fu

Fuente: https://link.springer.com/article/10.1186/1476-7120-10-8







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