Hiroyuki Matsuura

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Congenital heart defects (CHD) are very common in patients with trisomy 18 (T18) and trisomy 13 (T13). The surgical indication of CHD remains controversial since the natural history of these trisomies is documented to be poor. To investigate the outcome of CHD in patients with T18 and T13, we collected and evaluated clinical data from 134 patients with T18(More)
Our purpose is to study the effect on the blood flow caused by the valve in blood vessel. We examine the possibility that thrombosis is caused by pressing the artificial valve. We tried to solve the flow of blood by numerical analysis with an incompressibility Navier-Stokes equation. We supposed the static boundary condition about vessel shape, although(More)
BACKGROUND Myocarditis (MC) is an important cause of cardiac dysfunction in children. Fulminant MC is sometimes fatal, and sequelae may develop during follow-up. We conducted a nationwide survey to determine the clinico-epidemiological features of MC in Japanese children and adolescents. METHODS AND RESULTS Survey questionnaires were mailed to 627(More)
BACKGROUND Oxidative stress (OS) contributes to the acute phase of Kawasaki disease (KD) in a manner that is as yet unknown. In the present study OS in the acute phase of KD was investigated by measuring urinary 8-iso-prostaglandin F2alpha (8-iso-PG) and evaluating its correlation to the efficacy of intravenous immunoglobulin (IVIG) administration. (More)
BACKGROUND Aseptic meningitis is a serious adverse reaction to intravenous immunoglobulin (IVIG) therapy. We studied the clinical characteristics of patients with acute Kawasaki disease (KD) who developed IVIG-induced aseptic meningitis. METHODS A retrospective analysis of the medical records of patients with KD who developed aseptic meningitis after IVIG(More)
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(More)
BACKGROUND There is little data on the long-term effects of continuous intravenous epoprostenol for children with idiopathic pulmonary arterial hypertension (IPAH) in Japan. METHODS AND RESULTS Thirty-one IPAH patients younger than 18 years old who had begun epoprostenol therapy at Toho University Omori Medical Center between January 1999 and June 2004(More)
BACKGROUND Previous studies have reported a high prevalence of autoimmune thyroid disease (AITD) in adult patients with pulmonary arterial hypertension (PAH). The aim of this retrospective study was to determine the prevalence of AITD in children and adolescents with idiopathic PAH (IPAH). METHODS AND RESULTS The study group included 16 patients who had(More)
Female adnexal tumors of probable wolffian origin (FATWO) are rare neoplasms believed to originate from mesonephric (wolffian) remnants. Rarity and variable location of FATWO make the diagnosis difficult. Although most cases follow a benign clinical course, approximately 10% of them either recur or metastasize and are thought to be resistant to(More)