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Robert J Siegel - One of the best experts on this subject based on the ideXlab platform.
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correspondence of left ventricular ejection fraction determinations from Two Dimensional Echocardiography radionuclide angiography and contrast cineangiography
Journal of the American College of Cardiology, 1995Co-Authors: Manish M Naik, Ariel Soffer, George A Diamond, Robert J SiegelAbstract:Objectives. This study assessed the agreement of left ventricular ejection fraction determinations from Two-Dimensional Echocardiography, radionuclide angiography and contrast cineangiography. Background. Previously published reports suggest that TwoDimensional Echocardiography, radionuclide angiography and contrast cineangiography are equally acceptable methods of assessing left ventrieular ejection fraction on the basis of high coefficients of correlation. However, correlation of methods does not necessarily imply agreement. Methods. In a prospective analysis, 25 consecutive subjects all had Two-Dimensional Echocardiography and radionuclide angiography performed within 10 days of each other in the cardiology department of a metropolitan community hospital. A retrospective computer search (Medline) revealed seven studies, using the coefficient of correlation (r), comparing Two-Dimensional echocardiographic left ventricular ejection fraction (n = 268) with radionuclide angiographic (n = 174) or contrast cineangiographic (n = 119) left ventricular ejection fractions. Results. The eight individual studies (n = 293) comparing Two-Dimensional Echocardiography with either radionuclide angiography or contrast cineangiography exhibited coefficients of correlation ranging from 0.78 to 0.93. Agreement analysis using the method of Bland and Altman was performed by averaging the results obtained from the Two techniques and determining how disparate any single ejection fraction was (with 95% confidence limits) from the mean value. Agreement ranged from 23% to 42% around the mean ejection fraction. The average lack of agreement between the Two methods for all studies involved was 17%, with an average r value of 0.86. Conclusions. Left ventricular ejection fraction determinations by means of Two-Dimensional Echocardiography, radionuclide angiography and contrast cineangiography exhibit high correlation and only moderate agreement. High correlation does not always imply high agreement. These results suggest that, when validated by agreement analysis, multiple studies may not be necessary in appropriate clinical situations, potentially reducing costs. (J Am Coil Cardiol 1995;25:937-42) Left ventricular ejection fraction is an important clinical variable with respect to diagnosis, prognosis and treatment in various clinical situations. Currently, there are three commonly used methods for determining left ventricular ejection fraction: 1) Two-Dimensional Echocardiography, 2) radionuclide angiography, and 3) contrast cineangiography. Because the clinical situation may dictate using one method versus another, it is important for the clinician to know whether the results of ejection fraction estimates are comparable among the three methods and if they can be used interchangeably. If the answer is yes, this could reduce the need for multiple tests and thereby reduce the cost of health care to the patient. Previously published reports (1-3) suggest that TwoDimensional Echocardiography, radionuclide angiography and
J. P. Snoeck - One of the best experts on this subject based on the ideXlab platform.
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Importance of transthoracic Two-Dimensional Echocardiography for the diagnosis and management of pulmonary embolism
European heart journal, 1994Co-Authors: Viviane M. Conraads, Frank E. Rademakers, Philippe G. Jorens, C. J. E. Boeckxstaens, J. P. SnoeckAbstract:A case is presented in which the likely lethal outcome of a massive pulmonary embolism could be prevented by the correct diagnosis of a right ventricular thrombus by Two-Dimensional Echocardiography.
Manish M Naik - One of the best experts on this subject based on the ideXlab platform.
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correspondence of left ventricular ejection fraction determinations from Two Dimensional Echocardiography radionuclide angiography and contrast cineangiography
Journal of the American College of Cardiology, 1995Co-Authors: Manish M Naik, Ariel Soffer, George A Diamond, Robert J SiegelAbstract:Objectives. This study assessed the agreement of left ventricular ejection fraction determinations from Two-Dimensional Echocardiography, radionuclide angiography and contrast cineangiography. Background. Previously published reports suggest that TwoDimensional Echocardiography, radionuclide angiography and contrast cineangiography are equally acceptable methods of assessing left ventrieular ejection fraction on the basis of high coefficients of correlation. However, correlation of methods does not necessarily imply agreement. Methods. In a prospective analysis, 25 consecutive subjects all had Two-Dimensional Echocardiography and radionuclide angiography performed within 10 days of each other in the cardiology department of a metropolitan community hospital. A retrospective computer search (Medline) revealed seven studies, using the coefficient of correlation (r), comparing Two-Dimensional echocardiographic left ventricular ejection fraction (n = 268) with radionuclide angiographic (n = 174) or contrast cineangiographic (n = 119) left ventricular ejection fractions. Results. The eight individual studies (n = 293) comparing Two-Dimensional Echocardiography with either radionuclide angiography or contrast cineangiography exhibited coefficients of correlation ranging from 0.78 to 0.93. Agreement analysis using the method of Bland and Altman was performed by averaging the results obtained from the Two techniques and determining how disparate any single ejection fraction was (with 95% confidence limits) from the mean value. Agreement ranged from 23% to 42% around the mean ejection fraction. The average lack of agreement between the Two methods for all studies involved was 17%, with an average r value of 0.86. Conclusions. Left ventricular ejection fraction determinations by means of Two-Dimensional Echocardiography, radionuclide angiography and contrast cineangiography exhibit high correlation and only moderate agreement. High correlation does not always imply high agreement. These results suggest that, when validated by agreement analysis, multiple studies may not be necessary in appropriate clinical situations, potentially reducing costs. (J Am Coil Cardiol 1995;25:937-42) Left ventricular ejection fraction is an important clinical variable with respect to diagnosis, prognosis and treatment in various clinical situations. Currently, there are three commonly used methods for determining left ventricular ejection fraction: 1) Two-Dimensional Echocardiography, 2) radionuclide angiography, and 3) contrast cineangiography. Because the clinical situation may dictate using one method versus another, it is important for the clinician to know whether the results of ejection fraction estimates are comparable among the three methods and if they can be used interchangeably. If the answer is yes, this could reduce the need for multiple tests and thereby reduce the cost of health care to the patient. Previously published reports (1-3) suggest that TwoDimensional Echocardiography, radionuclide angiography and
David R. Holmes - One of the best experts on this subject based on the ideXlab platform.
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Echocardiography in the invasive laboratory: utility of Two-Dimensional Echocardiography in performing transseptal catheterization.
Mayo Clinic proceedings, 1998Co-Authors: David G. Hurrell, Rick A. Nishimura, John D. Symanski, David R. HolmesAbstract:• Objective To evaluate the potential utility of transthoracic Two-Dimensional Echocardiography as an aid in the technique of transseptal catheterization. • Design We performed a prospective study of 58 patients (29 men and 29 women; mean age, 64.2 years) referred for cardiac catheterization, in whom a systematic approach was used with selective application of Two-Dimensional Echocardiography. • Material and Methods The study group of 58 patients had the following diagnoses: mitral stenosis in 17, hypertrophic cardiomyopathy in 13, dilated cardiomyopathy in 13, aortic stenosis in 13, and prosthetic valve dysfunction and pulmonary hypertension in 1 each. With use of only fluoroscopic guidance, initial gentle pressure on the dilator alone was attempted for left atrial access. If the catheter resisted entry into the left atrium, Two-Dimensional Echocardiography was performed to assess the catheter's position relative to the atrial septum, and adjustments were made accordingly. Transseptal puncture with a Brockenbrough needle was performed only after confirmation of the catheter position at the region of the fossa ovalis with Two-Dimensional Echocardiography. • Results The catheterization procedure was performed without complication in all 58 patients; the mean time to catheter placement was 5.6 ± 3.5 minutes (range, 3 to 20). Two-Dimensional Echocardiography was used in 33 patients (57%) when left atrial access was not obtained. On the basis of echocardiographic images, the transseptal catheter had to be repositioned in 16 of these 33 patients (48%). • Conclusion Two-Dimensional Echocardiography offers value in demonstrating catheter position during transseptal catheterization and may be used in some patients to ensure transseptal puncture at the region of the fossa ovalis.
Ingo Stubbe - One of the best experts on this subject based on the ideXlab platform.
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Two-Dimensional Echocardiography in the Diagnosis of Hemorrhages in a Left Atrial Myxoma
Acta medica Scandinavica, 2009Co-Authors: Morten Bryhn, Arne Gustafson, Ingo StubbeAbstract:. Two-Dimensional Echocardiography in a patient with left atrial myxoma showed an echo-free area in a left atrial mass which corresponded to hemorrhages found in the surgically removed tumour. Atypical features of the latter were elucidated by simultaneous recording of Two-Dimensional and M-mode echocardiograms.
