the most common congenital diseases in children is congenital heart disease. factors such as environment, genetic, old maternal age during pregnancy, maternal disease and using medicine in pregnancy, prematuritiy, and specific seasons are significant in the prevalence of disease.materials and methods: a cross sectional study was conducted to investigate the status of children with congenital he...

A frequent and serious complication of certain intracardiac procedures is heart block, produced by operative injury to the conduction pathways. The anatomic relationship of the conduction system to cardiac defects has previously been studied only in isolated cases of heart block. This report deals with a study, by means of serial sections and reconstructions, of the relationships of the atriove...

a total of 14 cases of infective endocarditis (ie) in children aged 6 months to 10 years were seen from december 1987 to december 1992 at the pediatric unit of ayatollah taleghani medical center. the majority of patients (12 of 14) were between 5 and 10 years of age. acyanotic congenital heart disease was known to preexist in 78.6% and rheumatic valvular heart disease in 21.4% of cases. organis...