نتایج جستجو برای: transthoracic contrast echocardiography
تعداد نتایج: 434997 فیلتر نتایج به سال:
INTRODUCTION AND OBJECTIVES Low-gradient severe aortic stenosis with preserved ejection fraction is a controversial entity. Misclassification of valvulopathy severity could explain the inconsistencies reported in the prognosis of these patients. Planimetry of the aortic area using three-dimensional transesophageal echocardiography could clear up these doubts. The objectives were to assess the a...
Non-invasive imaging of coronary arteries by transthoracic echocardiography is an emerging diagnostic tool to study the left main (LM), left descending artery (LAD), circumflex (Cx) and right coronary artery (RCA). Impaired coronary circulation can be assessed by measuring coronary velocity flow reserve (CVFR) by transthoracic Doppler echocardiography. Coronary artery stenoses can be identified...
Myocardial bridging is a common congenital coronary abnormality recognized primarily with systolic narrowing or 'milking effect' shown by coronary angiography. We report the case of a 58-year-old man with signs and symptoms of myocardial ischemia who underwent transthoracic echocardiography and coronary angiography. The present case suggests the clinical role of transthoracic echocardiography i...
BACKGROUND The value of standard 2-dimensional transthoracic echocardiographic parameters for risk stratification in patients with arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is controversial. METHODS AND RESULTS We investigated the impact of RV fractional area change (FAC) and tricuspid annulus plane systolic excursion (TAPSE) for the prediction of major adverse cardio...
The aim of the present study was to test the validity of the transthoracic electrical bioimpedance method PhysioFlow® to measure stroke volume in patients with chronic anemia. Stroke volume index (SVI), as well as cardiac index (CI) obtained by transthoracic electrical bioimpedance method and doppler echocardiography were compared in healthy subjects (n = 25) and patients with chronic anemia (i...
Current agents not only scatter and reflect, but also interact with administered ultrasound through harmonic and multipulse sequencing to increase signal intensity over background tissue noise. Modifications in the agents, along with these unique methods of ultrasound delivery and reception, have resulted in robust and persistent contrast effect. There has been wide clinical acceptance of contr...
An asymptomatic patient was discovered to have a large right atrial myxoma by transthoracic echocardiography. Preoperative considerations included the possibility of satellite lesions, left atrial origin, and a question of tricuspid valve involvement. Subsequent operative transesophageal echocardiography demonstrated single-stalk attachment in the right atrial septal wall and no satellite lesio...
A 57-year-old African American female with a history of ischemic cardiomyopathy and a recent stroke with no residual deficits presented with apraxia and confusion. Non-contrast CT scan of the head revealed multiple embolic strokes in both cerebral hemispheres. Transthoracic echocardiography raised the suspicion for increased trabecular meshwork in the left ventricle. Cardiac MRI confirmed the f...
OBJECTIVES To assess the value of transoesophageal echocardiography in patients with Marfan syndrome particularly those with suspected aortic pathology or where conventional transthoracic imaging was suboptimal. DESIGN AND PATIENTS Eleven patients with Marfan syndrome. Seven patients were studied because of suspected aortic dissection and four because of inadequate transthoracic imaging. IN...
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