| Noninvasive identification of initial site of abnormal ventricular activation by least-square phase analysis of radionuclide cineangiograms. | |
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MedLine Citation:
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PMID: 7074809 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Least-square phase analysis (LSPA) of radionuclide cineangiograms demonstrates the sequence of onset of inward ventricular movement noninvasively. To validate the method and explore its ability to identify abnormal initial sites of ventricular activation, LSPA was applied to 14 patients with pacemakers (one with electrodes in two locations) (group 1) and three patients with recurrent ventricular tachycardia (VT) (group 2) who had undergone electrophysiologic endocardial mapping. The segment in which the site of initial ventricular activation was located was correctly identified in 13 of 15 paced studies and in two of three group 2 patients during VT. Pacing increased the duration of spread of onset of inward ventricular movement, and the duration of spread of onset correlated well with the duration of the QRS (r = 0.80). The sequence of onset of inward ventricular movement during VT was similar to the sequence of depolarization in all three group 2 patients. These preliminary results suggest that the sequence of onset of ventricular contraction as depicted by LSPA is a valid representation of the actual contraction sequence and that LSPA or radionuclide cineangiography correctly identifies abnormal sites of initial ventricular activation. |
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Authors:
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D A Turner; P L Von Behren; N T Ruggie; R G Hauser; P Denes; A Ali; J V Messer; E W Fordham; M W Groch |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Circulation Volume: 65 ISSN: 0009-7322 ISO Abbreviation: Circulation Publication Date: 1982 Jun |
Date Detail:
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Created Date: 1982-07-22 Completed Date: 1982-07-22 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0147763 Medline TA: Circulation Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1511-8 Citation Subset: AIM; IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Arrhythmias, Cardiac
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radionuclide imaging*,
therapy Electrocardiography Electrophysiology Heart / radionuclide imaging* Humans Myocardial Contraction* Pacemaker, Artificial Tachycardia / radionuclide imaging |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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