Sa1636 Electrosurgical Resection Currents and Their Histopathological Effects in an In-Vivo Porcine Model of Endoscopic Mucosal Resection.
Gastrointestinal Endoscopy(2015)
Abstract
Endoscopic Mucosal Resection (EMR) is now a well-established and effective method for the management of sessile polyps and laterally spreading tumours (LSTs). The majority of endoscopists use either a microprocessor controlled current, or a low power forced coagulation current to perform EMR. Microprocessor controlled currents limit voltage based on tissue resistance and fractionate cutting bursts. This is proposed to limit deep mural injury, whereas non-microprocessor controlled forced currents may be at higher risk of injury as the application of thermal energy is not limited or controlled. Delayed bleeding has been shown to be strongly related to electrosurgical current choice, and post procedural pain, deep mural injury and perforation may also be affected. EMR is widely practised however there is considerable variation in electrosurgical current use amongst endoscopists, largely due to a lack of evidence on which current is most effective or safest. Aims To describe the electrosurgical effects of two commonly used forms of electrosurgical current for EMR and examine depth of mural injury.
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Key words
electrosurgical resection currents,endoscopic mucosal resection,histopathological effects,in-vivo
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