background: several echocardiographic markers have been introduced to assess the left ventricular (lv) mechanical dyssynchrony. we studied dyssynchrony markers and the latest lv activation site in heart failure patients with and without left bundle branch block (lbbb). methods: conventional echocardiography and tissue velocity imaging were performed for 78 patients (lv ejection fraction ≤ 35%),...

background: echocardiographic evaluations of the longitudinal axis of the left ventricular (lv) function have been used in the diagnosis and assessment of heart failure with normal ejection fraction (hfnef). the evaluation of the global and segmental peak systolic longitudinal strains (pslss) by two-dimensional speckle tracking echocardiography (ste) may correlate with conventional echocardiogr...

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...

discussion there are other causes of dilated cardiomyopathies which could be transient like peripartum cardiomyopathy. the development of biventricular mural thrombi is rare, and it mainly increases the risk of embolization in the systemic and pulmonary circulations. case presentation we present two case reports of post-myocardial infarction sequel leading to ischemic cardiomyopathy and peripar...

background: we compared the outcomes in patients with a low ejection fraction (ef) and multivessel coronary artery disease (cad) who either underwent coronary artery bypass grafting (cabg) or received medical treatment (mt) after a viability study via dobutamine stress echocardiography (dse). methods: we considered patients with cad and left ventricular ejection fraction (lvef) <40% who were re...

a 29-year-old woman was referred to our hospital due to exacerbation in dyspnea on exertion and easy fatigability. a known case of congenitally corrected transposition of the great vessels and congenital complete heart block, she had already received a permanent single-chamber pacemaker. decision was made to implant a biventricular pacemaker for the treatment of the failing heart. excellent cor...

conclusions in this study there is no correlation between the main lv diastolic indices derived by spect and echocardiography, may be due to the main changes in the last version of guidline for assessment of lv diastolic function by echocardiography. results the population study consisted of 19 male and 30 female with the average age of 58.2 years.there is a mild negative correlation between pf...

background : left ventricular (lv) dyssynchrony is a prevalent feature in heart failure (hf) patients. the current study aimed to evaluate the prevalence of inter and intraventricular dyssynchrony in hf patients with regard to the qrs duration and etiology. methods: the available data on the tissue doppler imaging (tdi) of 230 patients with refractory hf were analyzed. the patients were divided...