New Contribution to the Study of Ventricular Remodeling and Valve Rings in Dilated Cardiomyopathy: Anatomical and Histological Evaluation

Overview

Journal Rev Bras Cir Cardiovasc

Specialty Cardiology & Vascular Diseases

Date 2015 Feb 26

PMID 25714199

Citations 2

Authors

Moise Dalva

Aristides Tadeu Correia

Natalia de Freitas Jatene

Paulo Hilario Nascimento Saldiva

Fabio Biscegli Jatene

Affiliations

Soon will be listed here.

Abstract

Introduction: Idiopathic dilated cardiomyopathy causes great impact but many aspects of its pathophysiology remain unknown.

Objective: To evaluate anatomical and histological aspects of hearts with idiopathic dilated cardiomyopathy and compare them to a control group, evaluating the behavior of the perimeters of the atrioventricular rings and ventricles and to compare the percentage of collagen and elastic fibers of the atrioventricular rings.

Methods: Thirteen hearts with cardiomyopathy and 13 normal hearts were analysed. They were dissected keeping the ventricular mass and atrioventricular rings, with lamination of segments 20%, 50% and 80% of the distance between the atrioventricular groove and the ventricular apex. The sections were subjected to photo scanning, with measurement of perimeters. The atrioventricular rings were dissected and measured digitally to evaluate their perimeters, later being sent to the pathology laboratory, and stained by hematoxylin-eosin, picrosirius and oxidized resorcin fuccin.

Results: Regarding to ventricles, dilation occurs in all segments in the pathological group, and the right atrioventricular ring measurement was higher in idiopathic dilated cardiomyopathy group, with no difference in the left side. With respect to collagen, both sides had lower percentage of fibers in the pathological group. With respect to the elastic fibers, there was no difference between the groups.

Conclusion: There is a change in ventricular geometry in cardiomyopathy group. The left atrioventricular ring does not dilate, in spite of the fact that in both ventricles there is lowering of collagen.

Citing Articles

Diagnostic Classification of Patients with Dilated Cardiomyopathy Using Ventricular Strain Analysis Algorithm.

Li M, Chen Y, Mao Y, Jiang M, Liu Y, Zhan Y Comput Math Methods Med. 2021; 2021:4186648.

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Dilated Cardiomyopathy: Normalized Multiparametric Myocardial Strain Predicts Contractile Recovery.

Henn M, Lawrance C, Kar J, Cupps B, Kulshrestha K, Koerner D Ann Thorac Surg. 2015; 100(4):1284-91.

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