Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy
Abstract Impedance and voltage of monopolar currents are directly related. By replacing air with saline solution, a change in behavior of these currents are achieved in endoscopy, resulting in a desired coagulation effect. However, the underlying electrophysical mechanisms of this effect remain poor...
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Nature Portfolio
2025-02-01
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| Online Access: | https://doi.org/10.1038/s41598-024-83503-3 |
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| author | Antonio Capogreco Roberta Maselli Markus Enderle Nermin Salkic Sandra Keller Francesco De Gaetano Elisabetta Mastrorocco Roberto de Sire Ludovico Alfarone Davide Massimi Jérémie Jacques Romain Legros Mathieu Pioche Yuichi Mori Cesare Hassan Alessandro Repici |
| author_facet | Antonio Capogreco Roberta Maselli Markus Enderle Nermin Salkic Sandra Keller Francesco De Gaetano Elisabetta Mastrorocco Roberto de Sire Ludovico Alfarone Davide Massimi Jérémie Jacques Romain Legros Mathieu Pioche Yuichi Mori Cesare Hassan Alessandro Repici |
| author_sort | Antonio Capogreco |
| collection | DOAJ |
| description | Abstract Impedance and voltage of monopolar currents are directly related. By replacing air with saline solution, a change in behavior of these currents are achieved in endoscopy, resulting in a desired coagulation effect. However, the underlying electrophysical mechanisms of this effect remain poorly explained. This investigation assessed the relationship between the electrical parameters and the surrounding environment for three high-voltage monopolar coagulation currents commonly used for therapeutic endoscopy. Six consecutive applications per setting and per environment were performed with dissection knife on porcine kidney. When transitioning from air to saline immersion, a 99% decrease in impedance was observed for all current settings tested (AirRange: 4400–8150 Ω, SalineRange: 64–71 Ω; p < 0.01 for all settings). This resulted in a 52-78% reduction in peak voltage (AirRange: 920–1165 V, SalineRange: 257–499 V; p < 0.01 for all settings), and a 237-2030% increase in power delivered (AirRange: 3–19 W, SalineRange: 50–117 W; p < 0.01 for all settings). The dramatic decrease in impedance results in a sharp reduction of voltage, explaining the coagulation effect observed when passing from air to saline-immersion therapeutic endoscopy. |
| format | Article |
| id | doaj-art-8d3c23f99d0648a3855c02b0614fc95f |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-8d3c23f99d0648a3855c02b0614fc95f2025-02-09T12:37:47ZengNature PortfolioScientific Reports2045-23222025-02-011511710.1038/s41598-024-83503-3Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopyAntonio Capogreco0Roberta Maselli1Markus Enderle2Nermin Salkic3Sandra Keller4Francesco De Gaetano5Elisabetta Mastrorocco6Roberto de Sire7Ludovico Alfarone8Davide Massimi9Jérémie Jacques10Romain Legros11Mathieu Pioche12Yuichi Mori13Cesare Hassan14Alessandro Repici15 Endoscopy Unit, IRCCS Humanitas Research Hospital Endoscopy Unit, IRCCS Humanitas Research HospitalErbe Elektromedizin GmbHErbe Elektromedizin GmbHErbe Elektromedizin GmbH Endoscopy Unit, IRCCS Humanitas Research Hospital Endoscopy Unit, IRCCS Humanitas Research Hospital Endoscopy Unit, IRCCS Humanitas Research Hospital Endoscopy Unit, IRCCS Humanitas Research Hospital Endoscopy Unit, IRCCS Humanitas Research HospitalDepartment of Gastroenterology and Digestive Endoscopy, Dupuytren University HospitalDepartment of Gastroenterology and Digestive Endoscopy, Dupuytren University HospitalGastroenterology and Endoscopy Unit, Edouard Herriot Hospital, Hospices Civils de LyonClinical Effectiveness Research Group, University of Oslo Endoscopy Unit, IRCCS Humanitas Research Hospital Endoscopy Unit, IRCCS Humanitas Research HospitalAbstract Impedance and voltage of monopolar currents are directly related. By replacing air with saline solution, a change in behavior of these currents are achieved in endoscopy, resulting in a desired coagulation effect. However, the underlying electrophysical mechanisms of this effect remain poorly explained. This investigation assessed the relationship between the electrical parameters and the surrounding environment for three high-voltage monopolar coagulation currents commonly used for therapeutic endoscopy. Six consecutive applications per setting and per environment were performed with dissection knife on porcine kidney. When transitioning from air to saline immersion, a 99% decrease in impedance was observed for all current settings tested (AirRange: 4400–8150 Ω, SalineRange: 64–71 Ω; p < 0.01 for all settings). This resulted in a 52-78% reduction in peak voltage (AirRange: 920–1165 V, SalineRange: 257–499 V; p < 0.01 for all settings), and a 237-2030% increase in power delivered (AirRange: 3–19 W, SalineRange: 50–117 W; p < 0.01 for all settings). The dramatic decrease in impedance results in a sharp reduction of voltage, explaining the coagulation effect observed when passing from air to saline-immersion therapeutic endoscopy.https://doi.org/10.1038/s41598-024-83503-3EndoscopyElectrosurgery unitThird-space endoscopyEndoscopic mucosal resectionPolypectomyUnderwater endoscopy |
| spellingShingle | Antonio Capogreco Roberta Maselli Markus Enderle Nermin Salkic Sandra Keller Francesco De Gaetano Elisabetta Mastrorocco Roberto de Sire Ludovico Alfarone Davide Massimi Jérémie Jacques Romain Legros Mathieu Pioche Yuichi Mori Cesare Hassan Alessandro Repici Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy Scientific Reports Endoscopy Electrosurgery unit Third-space endoscopy Endoscopic mucosal resection Polypectomy Underwater endoscopy |
| title | Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy |
| title_full | Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy |
| title_fullStr | Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy |
| title_full_unstemmed | Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy |
| title_short | Different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy |
| title_sort | different behavior of electrosurgical currents between air and saline immersion therapeutic endoscopy |
| topic | Endoscopy Electrosurgery unit Third-space endoscopy Endoscopic mucosal resection Polypectomy Underwater endoscopy |
| url | https://doi.org/10.1038/s41598-024-83503-3 |
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