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Early Marker of Myocardial Deformation in Children with Duchenne Muscular Dystrophy Assessed Using Echocardiographic Myocardial Strain Analysis.

 Won Ha Jo  ;  Lucy Youngmin Eun  ;  Jo Won Jung  ;  Jae Young Choi  ;  Seung Woong Gang 
 YONSEI MEDICAL JOURNAL, Vol.57(4) : 900-904, 2016 
Journal Title
Issue Date
Adolescent ; Cardiomyopathies/diagnostic imaging* ; Cardiomyopathies/etiology* ; Case-Control Studies ; Child ; Child, Preschool ; Early Diagnosis ; Echocardiography* ; Female ; Humans ; Male ; Muscular Dystrophy, Duchenne/complications* ; Muscular Dystrophy, Duchenne/diagnostic imaging* ; Predictive Value of Tests
Duchenne muscular dystrophy ; cardiomyopathies ; children ; myocardial strain
PURPOSE: As cardiomyopathy is more prevalent and currently the leading cause of death in Duchenne muscular dystrophy (DMD), early detection of myocardial involvement is important. The purpose of this study was to analyze myocardial strain in DMD children, for the possibility of early detection of myocardial dysfunction. MATERIALS AND METHODS: We reviewed medical records of DMD patients who were >10 years of age (15.6±1.6 years, 12.5-18 years), from March 2013 to June 2014. Data of 24 DMD children who underwent echocardiography with three-layer specific myocardial strain were compared with 24 controls (age: 9.3±4.0 years, 5.5-17 years). RESULTS: Epicardial longitudinal strain was lower in DMD (DMD: -9.3±3.8%; control: -12.3±4.3%; p=0.012). Radial strain (DMD: 24.1±11.1%; control: 37.3±25.9%; p=0.027) and strain rate (SR) (DMD: 1.68±0.91; control: 2.42±0.84; p=0.006) on parasternal short axis view were lower in DMD. Circumferential strains in the endocardium (DMD: -17.5±4.7%; control: -24.2±5.3%; p<0.001), myocardium (DMD: -12.7±3.8%; control: -18.0±4.0%; p<0.001), and epicardium (DMD: -8.4±4.0%; control: -12.2±5.0%; p=0.006) were significantly decreased in DMD. Circumferential SRs were lower in the endocardial (DMD: -1.46±0.38; control: -1.78±0.27; p=0.002) and myocardial layers (DMD: 1.02±0.27; control: -1.28±0.22; p=0.001). CONCLUSION: In DMD patients, deteriorations in myocardial circumferential strain might be an indicator for predicting cardiomyopathy.
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1. College of Medicine (의과대학) > Dept. of Rehabilitation Medicine (재활의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Seong Woong(강성웅) ORCID logo https://orcid.org/0000-0002-7279-3893
Eun, Lucy Youngmin(은영민) ORCID logo https://orcid.org/0000-0002-4577-3168
Jung, Jo Won(정조원)
Jo, Won Ha(조원하)
Choi, Jae Young(최재영) ORCID logo https://orcid.org/0000-0002-1247-6669
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