Argon laser ablation or modification of the atrioventricular conduction system in refractory supraventricular tachycardia

Saksena, Sanjeev; Gielchinsky, Isaac

doi:10.1016/0002-9149(90)91148-y

Cited by 14 publications

(1 citation statement)

References 18 publications

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“…Using a 7 F catheter, experimenters employed an argon laser to cause complete transection of the AV junction by means of tissue vaporization [39,40]. An Nd:YAG laser has been effective in the treatment of AV nodal reentry and creation of AV block [44][45][46].…”

Section: Lasersmentioning

confidence: 99%

Alternate energy sources for catheter ablation

et al. 1999

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Because of the limitations of conventional radiofrequency ablation in creating large or linear lesions, alternative energy sources have been used as possible methods of catheter ablation. Modified radiofrequency energy, cryoablation, and microwave, laser, and ultrasound technologies may be able to create longer, deeper, and more controlled lesions and may be particularly suited for the treatment of ventricular tachycardias and for linear atrial ablation. Future studies will establish the efficacy of these new and promising technologies.

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Section: Lasersmentioning

confidence: 99%

Alternate energy sources for catheter ablation

et al. 1999

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Neodymium: YAG contact laser photocoagulation of the in vivo canine epicardium: Dosimetry, effects of various lasing modes, and histology

et al. 1993

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Significant linear correlation was found between the total delivered energy and all measured lesion parameters. Transmural lesions were found at energy levels of 270-480 J. Maximum depth measured up to 1.68 cm; at high energies, it was limited by myocardial thickness only. At constant energy levels, power and lasing time did not independently affect lesion dimensions; lasing mode and fiber mode had statistically significant but minor effects. Laser lesions were homogeneous and sharply demarcated without epicardial crater or endocardial thrombus formation. Endocardial surface cooling by circulating blood and the presence of epicardial vessels resulted in modifications in lesion morphology. In 29 out of 74 grossly transmural lesions, there was a 0.082 +/- 0.127 cm thin surviving subendocardium. Forty-five coagulation lesions were truly transmural with no surviving myocardial strands. In conclusion, contact epicardial LPC can result in deep, transmural myocardial coagulation lesions. Lesion dimensions can be adequately controlled by total delivered energy. Closed heart epicardial Nd:YAG laser photocoagulation could become a new, less invasive surgical technique for the treatment of drug-resistant ventricular tachycardia.

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Cardiovascular applications of laser technology

Deckelbaum

1994

Lasers Surg Med

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Laser technology has been evaluated for the treatment of coronary artery disease, ventricular and supraventricular arrythmias, hypertrophic cardiomyopathy, and congenital heart disease. Developments in laser angioplasty, laser thrombolysis, transmyocardial laser revascularization, photochemotherapy, laser treatment of arrhythmias and/or laser diagnostics are directed at improving upon conventional non-laser approaches, and providing new therapeutic and diagnostic options. This review will summarize the current status of the multiple applications of laser technology for cardiovascular diagnosis and therapy.

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Argon laser ablation or modification of the atrioventricular conduction system in refractory supraventricular tachycardia

Cited by 14 publications

References 18 publications

Alternate energy sources for catheter ablation

Alternate energy sources for catheter ablation

Neodymium: YAG contact laser photocoagulation of the in vivo canine epicardium: Dosimetry, effects of various lasing modes, and histology

Cardiovascular applications of laser technology

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