The Localization of Left-to-Right Cardiac 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 کاملLocalization of Left-to-right Shunts by Radioactive Krypton.
In 1958 Weitzman and McAlister reported on the use of a radioactive tracer (32p) for accurate localization of the site of a left-to-right shunt in congenital cardiac lesions. The advantage of such a technique is that it can demonstrate premature arrival of the tracer in the chamber or vessel that receives the shunt. There is a clear-cut time difference due to the short circuit through the defec...
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 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...
متن کاملTechnetium-99m in the diagnosis of left-to-right shunts.
Radio-isotope techniques for the detection of intracardiac shunts have often employed extemal counting over the praecordium (Prinzmetal, Corday, Spritzler, and Flieg, 1949; Huff, Parrish, and Crockett, 1957; Greenspan, Lester, Marvin, and Amplatz, 1959; Turner, Salazar, and Gorlin, 1960; Shapiro and Sharpe, 1960). However, Folse and Braunwald (1962) counted over the upper lung field and claimed...
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ژورنال
عنوان ژورنال: Annals of Surgery
سال: 1958
ISSN: 0003-4932
DOI: 10.1097/00000658-195802000-00007