نتایج جستجو برای: echocardiographic
تعداد نتایج: 18666 فیلتر نتایج به سال:
AIMS Availability of normative reference values for cardiac chamber quantitation is a prerequisite for accurate clinical application of echocardiography. In this study, we report normal reference ranges for cardiac chambers size obtained in a large group of healthy volunteers accounting for gender and age. Echocardiographic data were acquired using state-of-the-art cardiac ultrasound equipment ...
BACKGROUND The impact of echocardiographic-guided treatment on outcome after tricuspid valve (TV) surgery is not well defined. OBJECTIVES The purpose of this study was to determine clinical and echocardiographic factors associated with adverse outcomes after TV surgery and determine the role of intraoperative echo (IOE) in facilitating successful outcomes after TV surgery. METHODS Four hund...
OBJECTIVE To assess the pattern and progression of aortic valve dysfunction by serial Doppler echocardiographic examinations in ambulatory adult patients with congenital bicuspid aortic valve. DESIGN AND SETTING Retrospective analysis of patients referred for Doppler echocardiography over a four year period. SUBJECTS Fifty one adult patients with echocardiographic diagnosis of congenital bi...
The diagnosis of peripartum cardiomyopathy is one of exclusion, made after careful search for an underlying cause. Research in this area is compromised by the reliance of some on clinical criteria alone without strict echocardiographic criteria. This article argues for uniform criteria that define peripartum cardiomyopathy, similar to the criteria for idiopathic dilated cardiomyopathy set forth...
BACKGROUND Double-orifice mitral valve (DOMV) is a rare congenital malformation characterised by the presence of two orifices in the left atrio-ventricular valve area, each having an independent chordal attachment to the papillary muscle. AIM To establish the echocardiographic features and incidence of DOMV in patients undergoing an echo study in a tertiary referral centre. METHODS We carri...
placement on echocardiographic measurements of left ventricular dimension. Am J Cardiol 35: 537, 1975 13. Linhart JW, Mintz GS, Segal BL, Kawai N, Kotler HN: Left ventricular volume measurement by echocardiography: fact or fiction? Am J Cardiol 36: 114, 1975 14. Teichholtz KE, Kreulen T, Horman MV, Gorlin R: Problems in echocardiographic volume determination: echocardiographic and angiographic ...
BACKGROUND Identification of patients at risk of deterioration is essential to guide clinical management in pulmonary arterial hypertension (PAH). This study aims to provide a comprehensive overview of well-investigated echocardiographic findings that are associated with clinical deterioration in PAH. METHODS MEDLINE and EMBASE databases were systematically searched for longitudinal studies p...
Echocardiograms were performed in 80 infants and children with isolated ventricular septal defect (VSD) who underwent cardiac catheterization. The pulmonary-to-systemic flow ratio (Qp/Qs) was correlated with the echocardiographic left atrial-to-aortic root diameter ratio (LA/Ao), and a relatively poor correlation (r = 0.62) was found. The end-systolic diameters of the left atrium and aorta at t...
INTRODUCTION AND OBJECTIVES Left ventricle outflow tract obstructions in transposition of the great arteries are frequent. We report the correlations between two-dimensional echocardiographic and autopsy findings to draw attention to the usefulness of this diagnostic method in the preoperative evaluation of these anomalies. MATERIAL AND METHODS Of 73 hearts with transposition of great arterie...
The speckle noise is inherent to transthoracic echocardiographic images. A standard noise-free reference echocardiographic image does not exist. The evaluation of filters based on the traditional parameters such as peak signal-to-noise ratio, mean square error, and structural similarity index may not reflect the true filter performance on echocardiographic images. Therefore, the performance of ...
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