| Detection and assessment of severity of tricuspid regurgitation using first-pass radionuclide angiography and comparison with pulsed Doppler echocardiography. | |
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MedLine Citation:
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PMID: 2368679 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Noninvasive detection and semiquantitative assessment of tricuspid regurgitation (TR) were performed using first-pass radionuclide angiography (RNA), by sampling a region of interest over the right atrium for any tracer entering the right atrium during right ventricular systole. The relative amount of tracer entering the right atrium was quantitated and the results were compared with semiquantitative Doppler echocardiographic grading of TR severity. Using the right ventricular time-activity curve to define end-diastolic and end-systolic frames, the right atrial counts for the 2 or 3 cardiac cycles after the peak right ventricular counts were summed. The right atrial "injection fraction" was calculated using the following formula: [(end-systolic counts - end-diastolic counts)/(end-diastolic counts)] X 100%. The right atrial injection fraction was examined in 51 patients who had good quality RNA and Doppler studies. Of 27 patients with no evidence of TR by Doppler, 26 had a negative right atrial injection fraction. All 24 patients with a positive Doppler for TR had a positive right atrial injection fraction. Comparison of right atrial injection fraction grade ranges with semiquantitative grades of TR severity on Doppler revealed identical grades in 21 of the 24, with a single grade difference in the remaining 3 patients. Thus, right atrial time-activity curve quantitation during routine first-pass RNA allows detection and grading of the severity of TR, with results very similar to pulsed Doppler echocardiography. This simple procedure is easily appended to the evaluation of ventricular performance with first-pass RNA. |
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Authors:
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K A Williams; P E Walley; J W Ryan |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: The American journal of cardiology Volume: 66 ISSN: 0002-9149 ISO Abbreviation: Am. J. Cardiol. Publication Date: 1990 Aug |
Date Detail:
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Created Date: 1990-08-16 Completed Date: 1990-08-16 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 0207277 Medline TA: Am J Cardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 333-9 Citation Subset: AIM; IM |
Affiliation:
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Department of Medicine (Cardiology), University of Chicago, Illinois. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Aortic Valve Insufficiency / diagnosis*, etiology, physiopathology Confounding Factors (Epidemiology) Echocardiography, Doppler / methods* Female Heart Ventricles / physiopathology Humans Male Middle Aged Prognosis Radionuclide Angiography / methods* Vena Cava, Superior / physiology, physiopathology Ventricular Function |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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