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Proceedings Paper

Delivery of intramyocardial diffused laser light for treatment of postinfarction ventricular tachycardia
Author(s): David Lochridge Ware; Chunjie Yang; Ashok Gowda; Brent A. Bell; Paul Boor; Massoud Motamedi
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Paper Abstract

Ventricular tachycardia (VT) is a rapid and life-threatening cardiac arrhythmia that most often occurs after healing of myocardial infarction. The same catheter techniques that use resistive endocardial heating to treat supraventricular tachycardias are less effective against post-infarction VT, in part because cure of the latter arrhythmia requires large volume, deep tissue coagulation. Greater risk may also be incurred when standard percutaneous methods are used to induce deep tissue heating, because excess endocardial damage can cause mural thrombi, and a large area of non-lethal endocardial injury may itself generate VT. To address these problems we have developed a unique optical fiber for direct intramyocardial photocoagulation which, when coupled to a diode laser (805 nm), can generate lesions up to 1 cm deep and wide without disruption of the endocardium. With further refinement this system may effectively and safely cure post- infarction VT.

Paper Details

Date Published: 22 May 1997
PDF: 4 pages
Proc. SPIE 2970, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII, (22 May 1997); doi: 10.1117/12.275029
Show Author Affiliations
David Lochridge Ware, Univ. of Texas Medical Branch/Galveston (United States)
Chunjie Yang, Univ. of Texas Medical Branch/Galveston (United States)
Ashok Gowda, Univ. of Texas Medical Branch/Galveston (United States)
Brent A. Bell, Univ. of Texas Medical Branch at Galveston (United States)
Paul Boor, Univ. of Texas Medical Branch/Galveston (United States)
Massoud Motamedi, Univ. of Texas Medical Branch/Galveston (United States)


Published in SPIE Proceedings Vol. 2970:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VII
R. Rox Anderson; Harvey Lui; Michail M. Pankratov; Kenneth Eugene Bartels; Gerhard J. Mueller; Graham M. Watson; Reza S. Malek; Lawrence S. Bass; Lloyd P. Tate; Hans-Dieter Reidenbach; Kenneth Eugene Bartels; R. Rox Anderson; Lawrence S. Bass; Aaron P. Perlmutter; Kenton W. Gregory; David M. Harris; David M. Harris; Harvey Lui; Reza S. Malek; Gerhard J. Mueller; Michail M. Pankratov; Aaron P. Perlmutter; Hans-Dieter Reidenbach; Lloyd P. Tate; Graham M. Watson, Editor(s)

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