In:
Lasers in Surgery and Medicine, Wiley, Vol. 13, No. 4 ( 1993-01), p. 421-428
Abstract:
This study was designed to compare the efficacy of the erbium: yttrium‐scandium‐gallium‐garnet (Er:YSGG) laser and the holmium:yttrium‐aluminum‐garnet (Ho:YAG) lasers in debriding calcium from freshly explanted aortic valve leaflets and to compare the Er:YSGG laser with the Cavitron ultrasonic surgical aspirator (CUSA). Aortic valve leaflets were freshly explanted from patients undergoing aortic valve replacement for aortic stenosis. Initially, 4 leaflets each were debrided with the Er:YSGG and the Ho:YAG lasers to attempt removal of calcium deposits while preserving the underlying integrity of the leaflets and minimizing thermal damage. The Er:YSGG laser was more effective in doing so with less thermal and photoacoustic damage when compared with the Ho:YAG laser. Twelve more leaflets each were then debrided with the Er:YSGG laser and the CUSA. The Er:YSGG laser again proved less injurious to the underlying leaflet. The CUSA‐treated leaflets demonstrated shattering and disruption of adjacent tissue as well as collagen fiber exposure. These changes were not seen with the Er:YSGG laser. Because of these properties, the Er:YSGG laser merits further evaluation as a tool for aortic valvuloplasty procedures in selected patients with senescent calcific aortic stenosis. © 1993 Wiley‐Liss, Inc.
Type of Medium:
Online Resource
ISSN:
0196-8092
,
1096-9101
DOI:
10.1002/lsm.1900130405
Language:
English
Publisher:
Wiley
Publication Date:
1993
detail.hit.zdb_id:
1475539-7
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