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Ushimaru Y, Odagiri K, Akeo K, Ban N, Hosaka M, Yamashita K, Saito T, Tanaka K, Yamamoto K, Makino T, Takahashi T, Kurokawa Y, Eguchi H, Doki Y, Nakajima K. Efficacy of electrocoagulation hemostasis: a study on the optimal usage of the very-low-voltage mode. Surg Endosc 2022; 36:8592-8599. [PMID: 35931893 DOI: 10.1007/s00464-022-09492-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/16/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND The very-low-voltage (VLV) mode in electrosurgery can stably and deeply energize tissues even if the local electrical resistance changes with energization. Therefore, in electrosurgical hemostasis, the VLV mode is more reliable than other coagulation modes. In clinical practice, the appropriate use of combined saline drip and blood suction under the VLV mode can further enhance coagulation ability. However, the detailed mechanism is not known. The current study aimed to evaluate the association between electrosurgical activation time (ET) and hemostatic tissue effect (HTE) under the VLV mode. Further, the effect of saline drip and suction on power consumption and HTE was validated. METHODS Twelve female pigs weighing 35 kg were included in the experiment. A liver hemorrhage model was established via an open abdominal procedure, and hemostasis in the hemorrhagic lesion was attempted using the VLV mode under different conditions (ET: 3, 6, 9, and 12 s, with/without saline drip and/or continuous suction). Electrical data (such as voltage, current, and resistance) during coagulation were extracted. Then, the vertical/horizontal extent of HTE was assessed, and the hemostasis outcome (successful or failed) was recorded. RESULTS The vertical/horizontal HTE, power consumption, and integrated current value were positively correlated with the ET. The coagulation depth deepened with saline drip (p < 0.01). However, it was not affected by continuous suction (p = 0.20). The HTE area increased with saline drip (p < 0.01) and decreased with suction (p < 0.01). The power consumption and integrated current increased with saline drip (p < 0.01) and decreased with suction (p < 0.01). The success rate of hemostasis decreased with saline drip alone (31of 48 trials [success rate = 64.5%] in the saline drip group and 44/48 trials (success rate = 91.7%) in the control group). However, it improved with continuous suction (46/48 trials [success rate = 95.8%]). CONCLUSION The electrosurgical activation time was positively correlated with hemostatic tissue effect. Saline drip increased heat transfer efficiency but decreased the success rate of hemostasis. Therefore, the use of continuous suction in addition to saline drip increased hemostatic efficiency.
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Affiliation(s)
- Yuki Ushimaru
- Department of Next Generation Endoscopic Intervention (Project ENGINE), Osaka University Graduate School of Medicine, Osaka, Japan
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
- Department of Gastroenterological Surgery, Sakai City Medical Center, Osaka, Japan
| | - Kazuki Odagiri
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | | | | | - Makoto Hosaka
- Department of Next Generation Endoscopic Intervention (Project ENGINE), Osaka University Graduate School of Medicine, Osaka, Japan
- Yamashina Seiki Co. Ltd, Shiga, Japan
| | - Kotaro Yamashita
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Takuro Saito
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Koji Tanaka
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kazuyoshi Yamamoto
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tomoki Makino
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tsuyoshi Takahashi
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yukinori Kurokawa
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hidetoshi Eguchi
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuichiro Doki
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Kiyokazu Nakajima
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Osaka, Japan.
- Department of Next Generation Endoscopic Intervention (Project ENGINE), Osaka University Graduate School of Medicine, Suite 0912, Center of Medical Innovation and Translational Research, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan.
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Wang D, Zhu J, Fan Y, Ma J, Yue S. Soft coagulation monopolar suction for rapid resection of supratentorial brain tumors: Feasibility of a new technique and outcomes. World Neurosurg 2022; 163:e137-e145. [DOI: 10.1016/j.wneu.2022.03.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/16/2022] [Accepted: 03/16/2022] [Indexed: 10/18/2022]
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Cañamares-Orbís P, Lanas Arbeloa Á. New Trends and Advances in Non-Variceal Gastrointestinal Bleeding-Series II. J Clin Med 2021; 10:jcm10143045. [PMID: 34300211 PMCID: PMC8303152 DOI: 10.3390/jcm10143045] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/03/2021] [Accepted: 07/05/2021] [Indexed: 12/12/2022] Open
Abstract
The gastrointestinal tract is a long tubular structure wherein any point in the mucosa along its entire length could be the source of a hemorrhage. Upper (esophagel and gastroduodenal) and lower (jejunum, ileum, and colon) gastrointestinal bleeding are common. Gastroduodenal and colonic bleeding are more frequent than bleeding from the small bowel, but nowadays the entire gastrointestinal tract can be explored endoscopically and bleeding lesions can be locally treated successfully to stop or prevent further bleeding. The extensive use of antiplatelet and anticoagulants drugs in cardiovascular patients is, at least in part, the cause of the increasing number of patients suffering from gastrointestinal bleeding. Patients with these conditions are usually older and more fragile because of their comorbidities. The correct management of antithrombotic drugs in cases of gastrointestinal bleeding is essential for a successful outcome for patients. The influence of the microbiome in the pathogenesis of small bowel bleeding is an example of the new data that are emerging as potential therapeutic target for bleeding prevention. This text summarizes the latest research and advances in all forms of acute gastrointestinal bleeding (i.e., upper, small bowel and lower). Diagnosis is approached, and medical, endoscopic or antithrombotic management are discussed in the text in an accessible and comprehensible way.
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Affiliation(s)
- Pablo Cañamares-Orbís
- Gastroenterology, Hepatology and Nutrition Unit, San Jorge University Hospital, 22004 Huesca, Spain
- Correspondence:
| | - Ángel Lanas Arbeloa
- IIS Aragón, CIBERehd, 50009 Zaragoza, Spain;
- Service of Digestive Diseases, University Clinic Hospital Lozano Blesa, 50009 Zaragoza, Spain
- University of Zaragoza, 500009 Zaragoza, Spain
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