Quantitation of colonic injury from argon laser, neodymium: YAG laser and monopolar electrocautery applied to flat mucosa and small sessile polyps of the canine colon

John Hunter, R. W. Burt, J. M. Becker, R. G. Lee, J. A. Dixon

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This study determined the optimum laser energy for ablation of colonic mucosal lesions and small sessile polyps in the canine colon. Neodymium (Nd):YAG laser, argon laser, and monopolar electrocautery were applied to exposed canine colonic mucosa for various application times at various power settings. At the minimum energy level necessary to ablate mucosa, the Nd:YAG laser caused greater muscularis injury than the argon laser and monopolar electrocautery. At higher energy levels, monopolar electrocautery and Nd:YAG laser caused greater muscularis injury than argon laser. Small surgically created polyps in the canine colon were ablated endoscopically with the three energy sources. Single-session complete polyp ablation occurred most frequently with Nd:YAG laser and least frequently with argon laser. The depth of tissue injury beneath polyp ablation sites was least with argon laser and greatest with Nd:YAG laser. This study suggests that the argon laser is safer than the Nd:YAG laser or monopolar electrocautery for coagulation of flat colonic mucosal lesions. Although the argon laser is safer for the coagulation of small sessile colonic polyps, it may be less effective than monopolar electrocautery or the Nd:YAG laser for the single-session fulguration of polyps greater than 5 mm in diameter.

Original languageEnglish (US)
Pages (from-to)16-21
Number of pages6
JournalGastrointestinal Endoscopy
Volume35
Issue number1
StatePublished - 1989
Externally publishedYes

Fingerprint

Neodymium
Electrocoagulation
Argon
Solid-State Lasers
Polyps
Canidae
Colon
Mucous Membrane
Lasers
Wounds and Injuries
Colonic Polyps
Laser Therapy

ASJC Scopus subject areas

  • Gastroenterology

Cite this

Quantitation of colonic injury from argon laser, neodymium : YAG laser and monopolar electrocautery applied to flat mucosa and small sessile polyps of the canine colon. / Hunter, John; Burt, R. W.; Becker, J. M.; Lee, R. G.; Dixon, J. A.

In: Gastrointestinal Endoscopy, Vol. 35, No. 1, 1989, p. 16-21.

Research output: Contribution to journalArticle

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