الفهرس 
I. Infective endocarditisOnly 14 pages are availabe for public view
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Abstract
Isolated Tricuspid valve infective endocarditis is an infrequent diagnosis, the incidence of Tricuspid valve infective endocarditis accounts for 5% of infective endocarditis in some studies, up to 15% of IE cases in other studies.
Modern echocardiographic techniques have significantly improved our ability to diagnose right sided endocarditis and are now the cornerstone of the diagnosis in this disease.
Our aim in this study is to assess the prevalence and the echocardiographic characteristics of tricuspid valve endocarditis among patients presented to the echo lab of Ain Shams hospital from 1-12- 2013 and 1-12-2014.
The main finding of our study revealed that the incidence of TVIE is about (17.7%) of all cases of IE, and is about (0.67%) of all cases attending the echo lab of Ain shams university during the study period.
Also we found that The mean age group in our study was (31.1±7.8) and about 84.3% of patients age was between (20-40) .Also the present study showed a higher incidence of IE in males (90.2%) than in females (9,8%) with a ratio of 9:1.
In our study we found that The vegetations were detected in one leaflet in 33 patients (64.7%) , in two leaflet in 9 patients (17.6%) and in the three TV leaflets in 7 patients (13.7) . the most affected leaflet was the anterior leaflet that was affected in 38 patients constituting about 74.5% of patients. The second was the posterior valve (16 patients 31.4%) and the septal leaflet in 14 patients (27.5%).
The size of vegetations in this study was large > 15 mm in 40 patients (78.4%) and small <15 mm in 9 patients (21.6%).
Native TVIE was present in 46 patients (94.1%), and prosthetic valve affection was in 3 patients (5.9%).
Left atrial dilatation was present in 4 patients (7.8%) , left ventricular dilation was present in 2 patients (3.9%) while right atrial dilatation was present in 16 patients (31.4%) and right ventricular dilatation was present in 15 patients (29.4%).
Concomitant aortic valve vegetations was present in 4 patients (7.8%) and Concomitant mitral valve vegetations was present in 7 patients (13.7%). Also vegetations was present in both aortic and mitral valve in 8 patients (15.7%).
In this study the most encountered echocardiographic complication is sever TR which was detected in 40 patient (78.4%)
Precardial effusion was found in 14 patients (27.5%) rupture of chorda tindinae in 12 patients (23.5%) perforations of cusps in 8 patients (15.7), AR in 3 patients (5.9%) , MR in 7 patients (13.7%) and Paravalvar abscess in 2 patients (3.9%).
Our conclusion in the present study is that the incidence of TVIE IS increasing with male gender predominance. TVIE affects mainly young age groups. The main echocardiographic feature of TVIE is vegetations which characterized by being large, highly mobile and affecting mainly anterior TV leaflet. The main echocardiographic complication is sever TR, pericardial effusion, cusp perforation, but abscess formation is infrequent.