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Proceedings Paper

Holmium:YAG laser coronary angioplasty in patients with lesions not ideal for balloon angioplasty
Author(s): Shunichi Miyazaki; Hiroshi Nonogi; Yoichi Goto; Akira Itoh; Keizaburo Ozono; Satoshi Daikoku; Kazuo Haze
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Paper Abstract

Conventional balloon coronary angioplasty has limitations for application on particular lesions, such as lesions near the left main trunk (LMT), ostial location, and highly eccentric lesions. Hence, efficacy of newly developed Holmium YAG laser coronary angioplasty (HLCA) was assessed for 24 patients with angina. Adjunctive balloon angioplasty was performed for 21 of 24 lesions. Delivered energy ranged from 1.5 to 2.5 watts/pulse and the total exposure time ranged from 6 to 32 seconds. Laser success, defined as 20% reduction of stenotic ratio, was obtained in 16 of 24 (67%) and overall procedural success rate was 92%. Follow up coronary angiography after 3 months showed restenosis in 9 of 19 patients (47%). HLCA is an acutely effective treatment for lesions identified as not ideal for balloon angioplasty. However, angiographical restenosis rate is similar to the conventional balloon angioplasty and a highly calcified complex lesion may not be a candidate for the treatment of HLCA, because of a potential risk of coronary perforation.

Paper Details

Date Published: 23 June 1993
PDF: 7 pages
Proc. SPIE 1878, Diagnostic and Therapeutic Cardiovascular Interventions III, (23 June 1993); doi: 10.1117/12.146567
Show Author Affiliations
Shunichi Miyazaki, National Cardiovascular Ctr. (Japan)
Hiroshi Nonogi, National Cardiovascular Ctr. (Japan)
Yoichi Goto, National Cardiovascular Ctr. (Japan)
Akira Itoh, National Cardiovascular Ctr. (Japan)
Keizaburo Ozono, National Cardiovascular Ctr. (Japan)
Satoshi Daikoku, National Cardiovascular Ctr. (Japan)
Kazuo Haze, National Cardiovascular Ctr. (Japan)


Published in SPIE Proceedings Vol. 1878:
Diagnostic and Therapeutic Cardiovascular Interventions III
George S. Abela, Editor(s)

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