Marcelo Felipe Kozak

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Adverse ventricular remodeling after tetralogy of Fallot (TOF) repair is associated with diffuse myocardial fibrosis. The goal of this study was to measure post-contrast myocardial T1 in pediatric patients after TOF repair as surrogates of myocardial fibrosis. Children after TOF repair who underwent cardiac magnetic resonance imaging with T1 mapping using(More)
This study analyzed prevalence, frequency and cause of headache among 460 children ranging from 10 to 14 years-old from a Brazilian school. A questionnaire was handed both to children and parents to know if there would be differences among children and parental reports. The lifetime prevalence of headache was 93.5% (children reports) and 93.3% (parental(More)
BACKGROUND Newborns with obstructive left heart lesions often depend on a patent ductus arteriosus to sustain the systemic circulation. Our aims were to validate the direct measurement of ductal flow, and to characterize the magnitude, determinants and hemodynamic effects of patent ductus arteriosus in newborns with obstructive left heart lesions by(More)
This report presents a case with severe dilation of both atria and giant pulmonary veins manifested with atrial fibrillation. The following cardiac magnetic resonance findings are highly suggestive of restrictive physiology: E/A ratio greater than two, prominent A wave across the pulmonary veins and inferior vena cava, and more interestingly, a triphasic(More)
Article receveid on October 28th, 2008 Article accepted on November 21st, 2008 CLINICAL DATA 14-month-old-girl, 7.1 kg, from Ilha Solteira, São Paulo State, Brazil, was referred to our Service after being adopted by a family who did not know her medical history. During her first physical examination, the patient was in good general health, eupneic, pale,(More)
INTRODUCTION Left atrioventricular valve regurgitation is the most concerning residual lesion after surgical correction of atrioventricular septal defects. OBJECTIVE To determine factors associated with moderate or severe left atrioventricular valve regurgitation within 30 days of surgical repair of complete atrioventricular septal defect. METHODS We(More)
Unilateral pulmonary vein atresia is a rare congenital heart disease. Its symptoms begin to manifest in childhood and may be similar to those of other left-side heart obstructions. The diagnosis of this disorder is difficult and usually requires several imaging methods. This report presents the case of a 7-year-old girl whose diagnosis was aided through the(More)
Congenital mitral valve malformations are rare, but are well known and described entities. Mitral valve malformations involve mitral valve apparatuses (leaflets and annulus) and subvalvar apparatuses (chordae and papillary muscle). Case reports of accessory mitral leaflets were already described, but were usually an appendix of the normal valve. We describe(More)
CLINICAL DATA Full-term female child, 2.8 kg born by c-section. Firsttime mother denied use of medications during pregnancy. The hospital discharge occurred two days after birth, with the child breastfeeding well and without signs or symptoms of congenital heart disease. At 6 months of age, the child was referred to our Service with a history of fatigue(More)