1. Left Ventricular End-Diastolic Diameter and Cardiac Mortality in Duchenne Muscular Dystrophy
- Author
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Kazushi Maruo, Norio Sugawara, Yuji Takahashi, Hirofumi Komaki, Masayuki Sasaki, Koichi Kimura, and Kazuhiko Segawa
- Subjects
medicine.medical_specialty ,Mitral regurgitation ,business.industry ,Duchenne muscular dystrophy ,Cardiomyopathy ,Diastole ,Cardiac mortality ,medicine.disease ,Pulmonary hypertension ,030227 psychiatry ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Heart failure ,medicine ,Left atrial enlargement ,Cardiology ,business ,030217 neurology & neurosurgery - Abstract
Purpose This study aimed to examine weather left ventricular end-diastolic diameter (LVDd) could predict mortality from heart failure in patients with Duchenne muscular dystrophy (DMD) receiving standard cardio-protective therapies. Patients and Methods One hundred thirty-three patients with DMD aged ≥10 years who underwent echocardiography from 2011 to 2015 were included in this study and retrospectively followed until August 2018. Patients were divided into two groups according to LVDd at initial echocardiography: ≤ 54 mm (Group 1: n=119) and ≥ 55 mm (Group 2: n=14). To identify factors other than LVDd that may affect heart failure-related mortality, Group 2 patients who developed no left atrial (LA) enlargement, moderate mitral regurgitation (MR), or pulmonary hypertension (PH) during the observation period (Group 2A: n=5) were compared with those who newly developed one or more of those complications (Group 2B: n=7). Clinical outcomes were all-cause mortality and mortality from heart failure. Results Mean observation period was 5.5±1.5 years in Group 1 and 4.4±1.9 years in Group 2. A total of 14 patients (10.5%) died, including 6 of 119 (5.0%) patients in Group 1 and 8 of 14 (57.1%) patients in Group 2 (p
- Published
- 2020
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