| Recanalization of experimental thrombotic arterial occlusion by radiofrequency thermal angioplasty: an angioscopic observation. | |
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MedLine Citation:
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PMID: 2531479 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The efficacy of radiofrequency (RF) angioplasty for recanalization of arterial thrombosis was assessed angioscopically in five dogs. A thrombus was induced by balloon injury of the left femoral artery. Within two hr, thrombi led to total occlusion of the artery in three dogs, subtotal occlusion in one, and about 70% obstruction in one. A metal-tipped catheter, with a tip size of 2.0 mm x 5.7 mm, was advanced into the thrombus and RF at 13.56 MHz was delivered repeatedly with gradually increased energies. The arterial lumina were recanalized or enlarged in all dogs. The thrombus surface had a shaggy appearance, and were dark (charring), or mixed dark and white in color. There were relatively large variations in the energies required; 140 J in one, 200 J in two and 250 J in two. The present results suggest that thrombotic arterial occlusion, such as acute occlusion complicating balloon angioplasty, can be treated with RF thermal angioplasty. Angioscopy provided detailed information about thrombus surfaces. The variations in required energies indicate the inability to control the thermal effect by energy settings alone. A more sophisticated method such as measurement of tip temperature will be able to overcome this difficulty. |
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Authors:
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Y Tamura; M Yamazoe; T Matsubara; Y Igarashi; T Izumi; A Shibata; S Hayashi; H Toyoshima; Y Saito; H Makino |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Tohoku journal of experimental medicine Volume: 158 ISSN: 0040-8727 ISO Abbreviation: Tohoku J. Exp. Med. Publication Date: 1989 Aug |
Date Detail:
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Created Date: 1989-12-27 Completed Date: 1989-12-27 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0417355 Medline TA: Tohoku J Exp Med Country: JAPAN |
Other Details:
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Languages: eng Pagination: 291-9 Citation Subset: IM |
Affiliation:
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First Department of Internal Medicine and Niigata University School of Medicine, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Angioplasty, Balloon
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methods* Animals Arterial Occlusive Diseases / surgery* Dogs Female Male Radio Waves* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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