الفهرس 
Introduction and aim of the work
IntroductionOnly 14 pages are availabe for public view
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Abstract
Our study design included 40 cases admitted to Assiut University Hospital with heart failure (with ejection fraction less than 45%) associated with atrial fibrillation.
We have done conventional echocardiography for the patients including LAD, LVEDD, LVEF by Simpson’s method and M-Mode, as well as RVEDV, RVESF and RVEF by Simpson’s method in apical 4 chambers and apical two chambers views.
DTI study of the tricuspid annulus was done for the patients including lateral S velocity, lateral E velocity, time to lateral S, time to lateal E, medial S velocity and medial E velocity.
The patients were followed-up for 6 months for occurrence of cardiovascular events including admission by heart failure, increase of dose of diuretics, thromboembolic manifestation and death.
At the end of the study there were 3 deaths reported with a percentage of 7.5%, 10 admissions with heart failure with a percentage of 25%, 6 cases increased the dose of diuretics with a percentage of 15%, and there was one case of cerebrovascular stroke with a percentage of 2.5%.
In our study we found significant relation between the occurrence of cardiovascular events (in the form of admission by HF, increase the dose of diuretics, thromboembolic manifestations, and death) and RVEF, LVEF, and medial S peak velocity.
Also we found a significant correlation between RVEF and some DTI parameters of the tricuspid valve (Lateral S peak velocity, Lateral E peak velocity, Time to lateral S, Time to lateral E, Medial S, peak velocity and Medial E velocity).
We have found a significant correlation between LVEF and tricuspid annulus time to lateral S. Additionally we have found a significant correlation between LA diameter and tricuspid annulus medial S peak velocity. And finally we have found significant correlation between LVEDD and both tricuspid annulus peak E velocity and tricuspid annulus time to lateral E.