introduction: prolongation of qt interval might result in dangerous cardiac arrhythmias, including torsades de pointes (tdp), consequently leading to syncope or death. a limited number of studies carried out in this respect to date have shown that qt interval might increase during pregnancy. on the other hand, it has been shown that each pregnancy might result in an increase in the risk of card...

objective(s):although previous studies have confirmed the beneficial effects of human umbilical cord matrix stem cell (hucm) transplantation post myocardial infarction (mi), but this stem cell resource has no potential to induce angiogenesis. in order to achieve the process of angiogenesis and cardiomyocyte regeneration, two required factors for cardiac repair agents were examined namely; hucm ...

this is a case of severely stunned left ventricle which occurred after a non-st elevation myocardial infarction in a 76-year-old woman who was a known case of three-vessel disease. her symptoms and cardiac function responded well to revascularization.

background: exercise and rehabilitation are important methods for decreasing the risk factors of coronary artery disease (cad). we aimed to evaluate the effect of the cardiac rehabilitation (cr) exercise program on the cardiac structure and physiology in patients undergoing percutaneous coronary intervention (pci). methods: in this randomized controlled study, 146 patients with cad were divided...

the most frequent congenital heart defects in the neonatal period are ventricular septal defects. ventricular septal aneurysms can rarely develop from an interventricular septal (ivs) defect in adults. we describe a 47-year-old man with an aneurysm in the ivs growing towards the right ventricle, which was confirmed by cardiac computed tomographic angiography and was missed by echocardiography.

right ventricular failure due to right coronary artery disease, right ventricular hypertrophy, stunning, abnormal septal motion, myocardial infarction, or non-homogeneous distribution of cardioplegia is an uncommon but serious complication of open heart surgery. we report a patient with severe right ventricular hypertrophy secondary to severe mitral valve stenosis and another patient with detac...

background : the signal-averaged electrocardiography is a noninvasive method to evaluate the presence of the potentials generated by tissues activated later than their usual timing in the cardiac cycle. the purpose of this study was to demonstrate the correlation between the filtered qrs duration obtained via the signal-averaged electrocardiography and left ventricular dimensions and volumes an...

introduction:  in patients who underwent surgery to repair tetralogy of fallot, right ventricular dilation from pulmonary regurgitation may be result in right ventricular failure, arrhythmias and cardiac arrest. hence, pulmonary valve replacement may be necessary to reduce right ventricular volume overload. the aim of present study was to assess the effects of pulmonary valve replacement on rig...