الفهرس 
IntroductionOnly 14 pages are availabe for public view
 |  | from | 128 |  |  |
| | | from | 128 | | |
Abstract
Echocardiographic assessment of right ventricular (RV) functions has been gaining importance in recent years after being fairly neglected in the past. Several quantitative methods for assessment of the RV have been validated after mainly depending on qualitative assessment in the past and are now recommended as standard by both the American Society of Echocardiography (ASE) and the European Association of Cardiovascular Imaging (EACVI). RV functions have been shown to have an effect of long term outcomes of patients especially in the setting of myocardial infarction (MI), pulmonary hypertension and pulmonary embolism. chronic total occlusions (CTO) have been reported to have a prevalence of about 20 % in large registries among patients with known or suspected coronary artery disease. The clinical benefit of opening CTOs is still a topic of debate with increasing evidence from several registries and retrospective studies supporting the clinical benefit from revascularization of occluded vessels by percutaneous coronary intervention (PCI). The aim of the study was: To assess right ventricular function by echocardiography in patients with proximal right coronary artery (RCA) chronic total occlusion (CTO) and correlating it with clinical and angiographic variables. The present study included (30) consecutive patients presented to catheterization laboratory at cardiology department Tanta university hospitals between period from July 2018 to October 2019 for elective, clinically-indicated coronary angiography found to have chronic total occlusion (CTO) of the proximal RCA with no other significant lesions in the left coronary system.