| Alterations of myocardial ultrasonic tissue characterization by coronary angioplasty in patients with chronic stable coronary artery disease. | |
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MedLine Citation:
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PMID: 11597359 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We conducted a study to delineate the alterations in the cyclic changes of myocardial ultrasonic integrated backscatter (IBS) in patients receiving angioplasty for chronic coronary artery disease. Ultrasonic tissue characterization (UTC) and dobutamine stress echocardiography were performed in 43 patients before and 24 h after angioplasty, as well as before the follow-up angiography 3 months later. For segments being normokinetic with ischemic burden, the blunted amplitude and increased nadir deviation of IBS cyclic modulation recovered soon after angioplasty. For dyssynergic segments with contractile reserve, the angioplasty rebuilt the amplitude before the wall motion recovered, but corrected the nadir deviation tardily. In both circumstances, the coronary restenosis abolished the initial restoration. Those nonviable segments persistently revealed large deviations and small weighted amplitudes irrelevant to coronary lesions. The progress of myocardial ischemia, the development of wall motion dyssynergy and, then, the loss of viability, show different patterns of alterations in UTC after alleviating coronary obstructions. |
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Authors:
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L C Lin; H L Kao; C C Wu; Y L Ho; Y T Lee |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Ultrasound in medicine & biology Volume: 27 ISSN: 0301-5629 ISO Abbreviation: Ultrasound Med Biol Publication Date: 2001 Sep |
Date Detail:
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Created Date: 2001-10-12 Completed Date: 2001-12-07 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0410553 Medline TA: Ultrasound Med Biol Country: England |
Other Details:
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Languages: eng Pagination: 1191-8 Citation Subset: IM |
Affiliation:
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Department of Internal Medicine, Cardiology Section, National Taiwan University Hospital, No. 7, Chung-Shan S. Road, Taipei, Taiwan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Angioplasty* Chronic Disease Coronary Angiography Coronary Artery Disease / physiopathology, surgery*, ultrasonography* Coronary Restenosis / physiopathology, ultrasonography Cross-Sectional Studies Echocardiography* Echocardiography, Stress Female Humans Male Middle Aged Myocardial Contraction / physiology* Myocardial Ischemia / physiopathology, ultrasonography |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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