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- Title
In vivo Evaluation of Monopolar versus Bipolar Electrosurgical Polypectomy Snares.
- Authors
Tucker, Robert D.; Platz, Charles E.; Sievert, Chester E.; Vennes, J. A.; Silvis, Stephen E.
- Abstract
The energy required and tissue damage in bipolar and monopolar polypectomy snares were compared in a canine model. The bipolar snare required an average of 34 joules of energy, whereas the monopolar snare required 228 joules to cut the same diameter of gastric mucosa tented into a polypoid structure (<em>p</em> = 0.0005). The reduced energy delivered to the tissue from the bipolar procedure resulted in only 32% average depth of damage to the underlying gastric wall, whereas the monopolar procedure caused an average 69% (<em>p</em> = 0.001). Surgically created polyps required 247 joules and 69 joules for corresponding monopolar and bipolar polypectomy (<em>p</em> = 0.001). The decreased energy required and the correspondingly reduced damage caused to the underlying bowel wall by the bipolar snare should reduce the incidence of perforation and post-polypectomy syndrome. The bipolar snare completes a local circuit about the snare, eliminating the return electrode and, consequently, the possibility of any return electrode burns. The bipolar snare thus provides an added safety margin during polypectomy.
- Subjects
ELECTROSURGERY; ELECTROTHERAPEUTICS; ELECTROLYSIS in surgery; GASTROINTESTINAL diseases; GASTROENTEROLOGY
- Publication
American Journal of Gastroenterology (Springer Nature), 1990, Vol 85, Issue 10, p1386
- ISSN
0002-9270
- Publication type
Article