نتایج جستجو برای: cardiac veins
تعداد نتایج: 291897 فیلتر نتایج به سال:
Cardiac transplantation carries a known risk of atrial arrhythmias. We present an unusual case and discuss the mechanism of an atrial arrhythmia arising from a donor pulmonary vein in a lung transplant recipient. A 59-year-old white woman with type 2 diabetes mellitus, obstructive sleep apnea, and hypertension underwent bilateral lung transplantation in 2005 because of end stage cystic fibrosis...
Idiopathic ventricular arrhythmias can originate from either the endocardial, midmyocardial, or epicardial regions of the heart. The outflow tracts and basal regions of the ventricle tend to be common locations of origin of these tachycardias. The anatomy of this region of the heart is both fascinating and, at times, challenging from a procedural standpoint. The orientation of the outflow tract...
Major congenital defects of the hepatic veins are readily detectable at autopsy but they have been described rarely. In the case reported here an anomalous disposition of these veins brought venous blood from the left half of the liver into the left atrium and blood from the right half of the liver into the right atrium. We have traced only two other similar cases (Arnold, 1868; Epstein, 1886)....
The effectiveness of intraventricular synchrony correction by cardiac resynchronization therapy (CRT) has been correlated with electrocatheter (EKT) positioning in the coronary veins. Multidetector computed tomography (MDCT) with contrast administration allows precise, noninvasive visualization of the coronary arteries, as well as the anatomy and distribution of the coronary veins. With this te...
In Khoy ophiolitic massif (NW of Iran) three types of quartzite and also quartz bearing veins can be distinguished: massive quartzite, quartz bearing veins in the amphibolites and siliceous veins in the radiolarian cherts. Massive quartzites contain quartz porphyroclasts associated with very small- deformed quartz neoblasts. These quartzites are deformed in regime I and recrystallized as grai...
OBJECTIVES The aim of this study was to develop a 3-dimensional (3D) fusion tool kit to integrate left ventricular (LV) venous anatomy on fluoroscopy venograms with LV epicardial surface on single-photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) for guiding cardiac resynchronization therapy (CRT) LV lead placement. BACKGROUND LV lead position is important for CRT...
Introduction Coronary artery fistulas (CAF) are congenital or acquired formations between the coronary arteries and cardiac chambers or other vascular structures such as the vena cava, pulmonary artery, or veins [1]. Most of these are found incidentally during angiography [2]. Fistulas account for half of all coronary anomalies and are present in 0.002% of the general population. Coronary to pu...
An 80-year-old man underwent a thoracoscopic right upper lobectomy for cT2N0 lung carcinoma. A partial anomalous drainage of the right superior pulmonary veins to the superior vena cava was discovered (Fig. 1). It was visible on computed tomography (CT) scan (Fig. 2a) and volume-rendering reconstruction (Fig. 2b). No other cardiac abnormality was found on echocardiography. Fig. 2. (a) The diagn...
Electrocardiograms have been recorded by unipolar leads from the great veins and cavities of the right heart during cardiac catheterization in 30 of 130 cases of congenital and rheumatic heart disease. These intracardiac electrograms have given information that has proved useful in diagnosis. Further, continuous monitoring on an oscilloscope of these tracings, rather than of records from surfac...
All of our cases of abnormal pulmonary venous connections collected to the middle of 1965 and verified at surgery or autopsy have been reviewed by means of diagrams and tabulations, using a specially devised code to facilitate the survey. The material consisted of 52 autopsy cases (half of them obtained after surgery) and the cases of 72 patients who survived operation. The postmortem group was...
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