Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Pediatric Cardiology and Adult Congenital Heart Disease
Clinical Features of Acute and Fulminant Myocarditis in Children – 2nd Nationwide Survey by Japanese Society of Pediatric Cardiology and Cardiac Surgery –
Hiroyuki MatsuuraFukiko IchidaTsutomu SajiShunichi OgawaKenji WakiMasahide KanekoMasahiro TaharaTakashi SogaYasuo OnoSatoshi Yasukochi
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2016 Volume 80 Issue 11 Pages 2362-2368

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Abstract

Background:The 1st nationwide survey by the Japanese Society of Pediatric Cardiology and Cardiac Surgery of acute or fulminant myocarditis (AMC/FMC) in children revealed that the survival rate of FMC was only 51.6%. The 2nd nationwide survey was performed to evaluate the recent outcomes of pediatric myocarditis.

Methods and Results:Questionnaires regarding patients aged ≤18 years with AMC/FMC during the period from January 2006 to December 2011 were mailed. A total of 221 cases (age 6.5±5.3 years, 116 boys and 105 girls) were reported. There were 145 (65.6%) and 74 cases (33.5%) of AMC/FMC, respectively; the type of myocarditis was not reported in the remaining 2 cases (0.9%). Viruses were identified in 56 cases (25.3%), including coxsackie B in 9 and influenza A in 8. Histopathology by either endomyocardial biopsy or autopsy was obtained in 38 cases (19.2%). Intravenous immunoglobulin was effective in 49 (34.3%) of 143 cases. Steroid therapy was effective in 20 (32.8%) of 61 cases. Mechanical circulatory support was given in 54 cases (24.4%) and 94.2% of them were patients with FMC. The survival rates for the whole study population, acute myocarditis, and FMC were 75.6%, 91.0%, and 48.6%, respectively.

Conclusions:The survival rate of children with myocarditis was almost identical to that of 10 years ago. (Circ J 2016; 80: 2362–2368)

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© 2016 THE JAPANESE CIRCULATION SOCIETY
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