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Evaluation of the left ventricle longitudinal deformity using myocardial-tracking signals in severely obese adolescents

Published online by Cambridge University Press:  21 July 2015

Norma Balderrábano ,
Blanca Del Rio ,
Elsy Navarrete ,
Arturo Berber  and
Nancy Méndez
Norma Balderrábano
Affiliation:
Cardiology DepartmentChildren Hospital of Mexico Federico Gómez, México, D.F., México
Blanca Del Rio*
Affiliation:
Allergy and Clinical Immunology, Children Hospital of Mexico Federico Gómez, México, D.F., México
Elsy Navarrete
Affiliation:
Allergy and Clinical Immunology, Children Hospital of Mexico Federico Gómez, México, D.F., México
Arturo Berber
Affiliation:
Allergy and Clinical Immunology, Children Hospital of Mexico Federico Gómez, México, D.F., México
Nancy Méndez
Affiliation:
Allergy and Clinical Immunology, Children Hospital of Mexico Federico Gómez, México, D.F., México
*
Correspondence to: B. Del Rio, Allergy and Clinical Immunology, Children Hospital of Mexico Federico Gómez, Calle Dr. Márquez 162, Delegación Cuauhtémoc, Colonia Doctores, 06720 Ciudad de México, Distrito Federal, Mexico. Tel: 01 55 5228 9917; Ext, 2150 or 2152, Fax: 01 55 5761 0947; E-mail: blancadelrionavarro@gmail.com
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Abstract

Background

The global prevalence of obesity in school-age children and adolescents has increased in recent decades. Obesity modifies some aspects of the cardiovascular system in order to preserve the body homoeostasis. Echocardiography to study ventricular function plays an important role in the evaluation of pathological re-modelling associated with left ventricular dysfunction. The aim of this study was to evaluate the left ventricle function and structure with conventional echocardiography and to analyse the longitudinal deformity of the left ventricle using myocardial-tracking signals in a group of severely obese adolescents.

Methods and results

We carried out a descriptive cross-sectional study. We describe the evaluation of the left ventricle using conventional bi-dimensional echocardiography and the myocardial-tracking signals in severely obese adolescents. There were 34 severely obese adolescents included in our study; 52% had a left ventricular ejection fraction<55%, the left ventricular end-diastolic diameter was increased in 70.5% of patients, and 32.3% had an increase in left ventricular mass. On average, 78.9% had abnormal values of left ventricle longitudinal deformations. The number of segments affected per patient was, on average, 5.8, with the anterior apical segment being the most commonly affected. There was a decrease in global longitudinal deformity in 79.4% of the cases.

Conclusion

More than half of this group of asymptomatic severely obese adolescents showed abnormalities in left ventricular structure and function evaluated using traditional echocardiographic methods, but 100% of the cases showed abnormalities in longitudinal deformation in at least one of the 17 left ventricle segments evaluated using myocardial-tracking signals.

Keywords

Obesityechocardiographyleft ventricular function
Type
Original Articles
Information
Cardiology in the Young , Volume 26 , Issue 4 , April 2016 , pp. 749 - 753
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Copyright
© Cambridge University Press 2015 

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