TCT-775 Novel System for Detection of Cardiac Right to Left Shunts
نویسندگان
چکیده
منابع مشابه
Left-to-Right Shunts
Contrary to the opinion of French pediatrician HenriLouis that isolated ventricular septal defects (VSDs) are universally well tolerated, the subsequent discoveries of Eisenmenger, Abbott, Wood, and others have taught us that the prognosis of left-to-right shunt lesions is not always benign. After more than a century of research, as pediatric cardiologists and congenital heart surgeons, we clai...
متن کاملQuantitation of left-to-right cardiac shunts with radionuclide angiography.
A quantitative radionuclide angiogram technique using an intravenous injection of technetium99m (Tc-99m) pertechnetate is described for quantitation of left-to-right shunts in the central circulation. Data analysis assumes exponential indicator clearance from normal cardiac chambers by dilution. A late prolongation of tracer disappearance compared to the initial clearance rate indicates an abno...
متن کاملA New Technic for the Detection of Left-to-Right Cardiac Shunts by Use
THE left-to-right shunts found in small atrial or ventricular septal defects or in patent ductus arteriosus are easily demonstrated during cardiac catheterization by both rightand left-sided approaches.' Efforts to evaluate shunting due to these defects without cardiac catheterization have depended on measurements of the cardiac output curves obtained by various external counting technics.Y Bec...
متن کاملOximetric detection of intracardiac left-to-right shunts.
To assess prevailing guidelines for the oximetric detection of intracardiac left-to-right shunts, we examined the variability of right heart oxygen saturation step-ups in 1121 catheterisations in children with aortic and pulmonary stenosis, who were studied as part of the joint study of the natural history of congenital heart defects. It is estimated that in the absence of intracardiac shunting...
متن کاملThe Identification of Right-to-Left Shunts
SEVERAL METHODS are now used in conjunction with cardiac catheterization for localizing and quantitating right-to-left shunts. These include the recording of indicator-dye concentration curves after selective intracardiac dye injection,14 the external recording of radioactivity following injection of radioactive materials,5 6 and the use of cardioangiograms or cineangiograms to picture the cour...
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2012
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2012.08.819