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Miwa H, Sugimori K, Endo K, Oishi R, Tsuchiya H, Kaneko T, Maeda S. Endoscopic hemostasis with bipolar forceps coagulation for post-endoscopic sphincterotomy bleeding. Endoscopy 2024; 56:E315-E316. [PMID: 38593997 PMCID: PMC11003801 DOI: 10.1055/a-2291-9399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Affiliation(s)
- Haruo Miwa
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Kazuya Sugimori
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Kazuki Endo
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Ritsuko Oishi
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Hiromi Tsuchiya
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Takashi Kaneko
- Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Shin Maeda
- Department of Gastroenterology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Tokuhara M, Sano Y, Watanabe Y, Nakata H, Nakahira H, Furukawa S, Ohtsu T, Nakamura N, Ito T, Torii I, Yamashina T, Shimatani M, Naganuma M. A method of "Noninjecting Resection using Bipolar Soft coagulation mode; NIRBS" for superficial non-ampullary duodenal epithelial tumor: a pilot study. BMC Gastroenterol 2024; 24:343. [PMID: 39354393 PMCID: PMC11446073 DOI: 10.1186/s12876-024-03439-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2024] [Accepted: 09/26/2024] [Indexed: 10/03/2024] Open
Abstract
BACKGROUND Complete endoscopic resection of superficial non-ampullary duodenal epithelial tumors (SNADETs) is technically difficult, especially with an extremely high risk of adverse event (AE), although various endoscopic resection methods including endoscopic mucosal resection (EMR), underwater EMR (UEMR), and endoscopic submucosal dissection (ESD) have been tried for SNADETs. Accordingly, a novel simple resection method that can completely resect tumors with a low risk of AEs should be developed. AIMS A resection method of Noninjecting Resection using Bipolar Soft coagulation mode (NIRBS) which has been reported to be effective and safe for colorectal lesions is adapted for SNADETs. In this study we evaluated its effectiveness, safety, and simplicity for SNADETs measuring ≤ 20 mm. RESULTS This study included 13 patients with resected lesions with a mean size of 7.8 (range: 3-15) mm. The pathological distributions of the lesions were as follows: adenomas, 77% (n = 10) and benign and non-adenomatous lesions, 23% (n = 3). The en bloc and R0 resection rate was 100% (n = 13). The median procedure duration was 68 s (32-105). None of the patients presented with major AEs including bleeding and perforation. CONCLUSIONS Large studies such as prospective, randomized, and controlled trials should be conducted for the purpose of validating effectiveness, safety, and simplicity of the NIRBS for SNADETs measuring ≤ 20 mm suggested in this study.
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Affiliation(s)
- Mitsuo Tokuhara
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, 4-8-1 Hoshigaoka, Hirakata, Osaka, 573-8511, Japan.
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Hirakata, Osaka, Japan.
| | - Yasushi Sano
- Gastrointestinal Center, Sano Hospital, Kobe, Hyogo, Japan
| | - Yoshifumi Watanabe
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, 4-8-1 Hoshigaoka, Hirakata, Osaka, 573-8511, Japan
| | - Hidetoshi Nakata
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, 4-8-1 Hoshigaoka, Hirakata, Osaka, 573-8511, Japan
| | - Hiroko Nakahira
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, 4-8-1 Hoshigaoka, Hirakata, Osaka, 573-8511, Japan
| | - Shingo Furukawa
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, 4-8-1 Hoshigaoka, Hirakata, Osaka, 573-8511, Japan
| | - Takuya Ohtsu
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Hirakata, Osaka, Japan
| | - Naohiro Nakamura
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Hirakata, Osaka, Japan
| | - Takashi Ito
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Hirakata, Osaka, Japan
| | - Ikuko Torii
- Department of Pathology, Japan Community Healthcare Organization Hoshigaoka Medical Center, Hirakata, Osaka, Japan
| | - Takeshi Yamashina
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Hirakata, Osaka, Japan
| | - Masaaki Shimatani
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Hirakata, Osaka, Japan
| | - Makoto Naganuma
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Hirakata, Osaka, Japan
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Nakamura J, Hikichi T, Tanaka H. Coagulation with hemostatic forceps after endoscopic injection sclerotherapy in a pediatric patient with esophageal varices. Dig Endosc 2024; 36:631-633. [PMID: 38433620 DOI: 10.1111/den.14780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Accepted: 02/08/2024] [Indexed: 03/05/2024]
Abstract
Watch a video of this article.
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Affiliation(s)
- Jun Nakamura
- Department of Endoscopy, Fukushima Medical University Hospital, Fukushima, Japan
| | - Takuto Hikichi
- Department of Endoscopy, Fukushima Medical University Hospital, Fukushima, Japan
| | - Hideaki Tanaka
- Department of Pediatric Surgery, Fukushima Medical University Hospital, Fukushima, Japan
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Minakata N, Murano T, Inaba A, Shinmura K, Ikematsu H. Hot snare polypectomy using bipolar snare: an easy and feasible approach for intermediate-sized colorectal lesions. VIDEOGIE : AN OFFICIAL VIDEO JOURNAL OF THE AMERICAN SOCIETY FOR GASTROINTESTINAL ENDOSCOPY 2024; 9:251-253. [PMID: 38766405 PMCID: PMC11099305 DOI: 10.1016/j.vgie.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Affiliation(s)
- Nobuhisa Minakata
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East Kashiwa, Chiba, Japan
| | - Tatsuro Murano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East Kashiwa, Chiba, Japan
| | - Atsushi Inaba
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East Kashiwa, Chiba, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East Kashiwa, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East Kashiwa, Chiba, Japan
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Yamamoto S, Kozuki M, Matsushima K, Sakakibara Y, Sakamori R, Mita E. Endoscopic mucosal resection with a dedicated bipolar soft snare for large flat colonic polyps. Endoscopy 2023; 55:E1045-E1046. [PMID: 37714212 PMCID: PMC10504033 DOI: 10.1055/a-2158-7895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Affiliation(s)
- Shunsuke Yamamoto
- Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Miho Kozuki
- Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Kensuke Matsushima
- Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Yuko Sakakibara
- Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Ryotaro Sakamori
- Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Eiji Mita
- Department of Gastroenterology and Hepatology, National Hospital Organization Osaka National Hospital, Osaka, Japan
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Tokuhara M, Shimatani M, Tominaga K, Nakahira H, Ohtsu T, Kouda K, Naganuma M. Evaluation of a new method, "non-injection resection using bipolar soft coagulation mode (NIRBS)", for colonic adenomatous lesions. Clin Endosc 2023; 56:623-632. [PMID: 37524565 PMCID: PMC10565442 DOI: 10.5946/ce.2022.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/21/2022] [Accepted: 12/16/2022] [Indexed: 08/02/2023] Open
Abstract
BACKGROUND/AIMS Endoscopic resection of all colorectal adenomatous lesions with a low complication rate, simplicity, and negative residuals is challenging. Hence, we developed a new method called "non-injection resection using bipolar soft coagulation mode (NIRBS)" method, adapted for colorectal lesions. In addition, we evaluated the effectiveness of this method. METHODS We performed NIRBS throughout a 12-month period for all colorectal lesions which snare resection was acceptable without cancerous lesions infiltrating deeper than the submucosal layer. RESULTS A total of 746 resected lesions were included in the study, with a 4.5 mm mean size (range, 1-35 mm). The major pathological breakdowns were as follows: 64.3% (480/746) were adenomas, and 5.0% (37/746) were intraepithelial adenocarcinomas (Tis lesions). No residuals were observed in any of the 37 Tis lesions (mean size, 15.3 mm). Adverse events included bleeding (0.4%) but no perforation. CONCLUSIONS NIRBS allowed the resection of multiple lesions with simplicity because of the non-injection and without perforating due to the minimal burn effect of the bipolar snare set in the soft coagulation mode. Therefore, NIRBS can be used to resect adenomatous lesions easily, including Tis lesions, from small to large lesions without leaving residuals.
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Affiliation(s)
- Mitsuo Tokuhara
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, Osaka, Japan
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Osaka, Japan
| | - Masaaki Shimatani
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Osaka, Japan
| | - Kazunari Tominaga
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, Osaka, Japan
| | - Hiroko Nakahira
- Department of Gastroenterology, Japan Community Healthcare Organization Hoshigaoka Medical Center, Osaka, Japan
| | - Takuya Ohtsu
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Osaka, Japan
| | - Katsuyasu Kouda
- Department of Hygiene and Public Health, Kansai Medical University Hirakata Hospital, Osaka, Japan
| | - Makoto Naganuma
- Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University Hirakata Hospital, Osaka, Japan
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Tuthill T, Jackson GR, Schundler SF, Lee JS, Allahabadi S, Salazar LM, McCormick JR, Jawanda H, Batra A, Khan ZA, Mameri ES, Chahla J, Verma NN. Radiofrequency Chondroplasty of the Knee Yields Excellent Clinical Outcomes and Minimal Complications: A Systematic Review. Arthrosc Sports Med Rehabil 2023; 5:100749. [PMID: 37520504 PMCID: PMC10373658 DOI: 10.1016/j.asmr.2023.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 05/22/2023] [Indexed: 08/01/2023] Open
Abstract
Purpose To evaluate reported clinical outcomes and complications following radiofrequency (RF) ablation for the treatment of knee chondral lesions. Methods A literature search was performed according to the 2020 Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines by querying EMBASE, PubMed, and Scopus computerized databases from database inception through October 2022. Level I to IV clinical studies that reported outcomes or complications following RF-based chondroplasty were included. Postoperative outcome scores and complications were aggregated. Study quality was assessed via the Newcastle-Ottawa Scale. Results Ten articles from 2002 to 2018 consisting of 1,107 patients (n = 1,504 lesions) were identified. Four studies were of Level I evidence, 3 studies were Level II, 1 study was Level III, and 2 studies were Level IV. The mean patient age was 41.8 ± 6.3 years (range, 12-87). Seven studies (n = 1,037 patients) used bipolar RF devices, and 3 studies (n = 70 patients) used monopolar RF devices. The overall mean postoperative Lysholm, Tegner, and IKDC scores ranged from 83 to 91, 3.8 to 7, and 49 to 90, respectively, in lesions ranging from grade I-IV according to the Outerbridge Classification. Monopolar RF devices reported qualitatively similar mean changes in Lysholm scores (83), Tegner scores (3.8), and IKDC scores (range, 49-69) compared with bipolar RF devices (range, 86.4-91, 4.5-7, 90, respectively). The incidence of complications ranged from 0% to 4%. The most commonly reported complication was osteonecrosis (range, 0% to 4%). The incidence rate of patients undergoing additional surgery ranged from 0% to 4.5%. Conclusions The available literature on RF-based chondroplasty shows its efficacy and safety for the treatment of knee chondral lesions, with good clinical outcome scores and low complication and reoperation rates. Level of Evidence Level IV, systematic review of Level I-IV studies.
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Affiliation(s)
- Trevor Tuthill
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Garrett R. Jackson
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Sabrina F. Schundler
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Jonathan S. Lee
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Sachin Allahabadi
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Luis M. Salazar
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Johnathon R. McCormick
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Harkirat Jawanda
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Anjay Batra
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Zeeshan A. Khan
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Enzo S. Mameri
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
- Instituto Brasil de Tecnologia da Saúde, Rio de Janeiro, Brazil and Department of Orthopedics and Traumatology, Federal University of São Paulo (EPM-UNIFESP), São Paulo, Brazil
| | - Jorge Chahla
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Nikhil N. Verma
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
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Jena A, Jain S, Sundaram S, Singh AK, Chandnani S, Rathi P. Electrosurgical unit in GI endoscopy: the proper settings for practice. Expert Rev Gastroenterol Hepatol 2023; 17:825-835. [PMID: 37497836 DOI: 10.1080/17474124.2023.2242243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 06/14/2023] [Accepted: 07/26/2023] [Indexed: 07/28/2023]
Abstract
INTRODUCTION Electrosurgical unit (ESU) is integral to the endoscopy unit. The proper knowledge of the Mode with setting is essential for good therapeutic outcomes and the safety of the patients. AREAS COVERED ESU generates high-frequency electric current, which could perform cutting and coagulation for various therapeutic interventions. We review the proper settings for common endoscopic interventions like hemostasis, polypectomy, sphincterotomy, and advanced procedures like endoscopic ultrasound-guided cysto-gastrostomy, bile duct drainage, and endoscopic Ampullectomy. We review the various waveforms of ESU in practice in endoscopy, including special conditions like patients with pacemakers. EXPERT OPINION Knowledge of the waveforms' duty cycle and crest factor is necessary. A high-duty cycle and lower crest factor lead to a good cutting effect on the tissue. Endocut is the most commonly used Mode in ESU in endoscopic practices like sphincterotomy and polypectomy. Endocut I mode (effect 1-2, duration 3, interval 3) is used for endoscopic sphincterotomy, while Forced Coag mode (Effect 2, 60 W) controls post-sphincterotomy bleeding. Endocut Q mode (Effect 2-3, duration 1, interval 3) is used for cutting the polyp, while Forced Coag mode (Effect 2, 60 W) is used before cutting for pre-coagulation of the stalk.
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Affiliation(s)
- Anuraag Jena
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
| | - Shubham Jain
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
| | - Sridhar Sundaram
- Department of Digestive Diseases and Clinical Nutrition, Tata Memorial Hospital, Mumbai, India
| | - Anupam Kumar Singh
- Department of Gastroenterology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Sanjay Chandnani
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
| | - Pravin Rathi
- Department of Gastroenterology, BYL Nair Hospital and Topiwala National Medical College, Mumbai, India
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Minakata N, Murano T, Wakabayashi M, Sasabe M, Watanabe T, Mitsui T, Yamashita H, Inaba A, Sunakawa H, Nakajo K, Kadota T, Shinmura K, Ikematsu H, Yano T. Hot snare polypectomy vs endoscopic mucosal resection using bipolar snare for intermediate size colorectal lesions: Propensity score matching. World J Gastroenterol 2023; 29:3668-3677. [PMID: 37398881 PMCID: PMC10311618 DOI: 10.3748/wjg.v29.i23.3668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/21/2023] [Accepted: 05/23/2023] [Indexed: 06/16/2023] Open
Abstract
BACKGROUND Endoscopic resection (ER) with bipolar snare, in which the electric current only passes through the tissue between the device’s two electrodes, is a prominent method used to prevent perforation due to electricity potentially. ER using bipolar snare with or without submucosal injection enabled safe resection of colorectal lesions measuring 10–15 mm in an ex vivo porcine model. ER with bipolar snare is expected to have good treatment outcomes in 10–15 mm colorectal lesions, with high safety even without submucosal injection. However, no clinical reports have compared treatment outcomes with and without submucosal injection.
AIM To compare the treatment outcomes of bipolar polypectomy with hot snare polypectomy (HSP) to those with endoscopic mucosal resection (EMR).
METHODS In this single-centre retrospective study, we enrolled 10–15 mm nonpedunculated colorectal lesions (565 Lesions in 463 patients) diagnosed as type 2A based on the Japan Narrow-band Imaging Expert Team classification, resected by either HSP or EMR between January 2018 and June 2021 at the National Cancer Center Hospital East. Lesions were divided into HSP and EMR groups, and propensity score matching was performed. In the matched cohort, en bloc and R0 resection rates and adverse events were compared between the two groups.
RESULTS Of the 565 lesions in 463 patients, 117 lesions each in the HSP and EMR groups were selected after propensity score matching. In the original cohort, there was a significant difference in antithrombotic drug use (P < 0.05), lesion size (P < 0.01), location (P < 0.01), and macroscopic type (P < 0.05) between the HSP and EMR groups. In the matched cohort, the en bloc resection rates were comparable between both groups [93.2% (109/117) vs 92.3% (108/117), P = 0.81], and there was no significant difference in the R0 resection rate [77.8% (91/117) vs 80.3% (94/117), P = 0.64]. The incidence of delayed bleeding was similar in both groups [1.7% (2/117)]. Perforation occurred in the EMR group [0.9% (1/117)] but not in the HSP group.
CONCLUSION Using bipolar snare, ER of nonpedunculated 10–15 mm colorectal lesions may be performed safely and effectively, even without submucosal injection.
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Affiliation(s)
- Nobuhisa Minakata
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Tatsuro Murano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Masashi Wakabayashi
- Department of Biostatistics Division, Center for Research Administration and Support, National Cancer Center, Kashiwa 2778577, Chiba, Japan
| | - Maasa Sasabe
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Takashi Watanabe
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Tomohiro Mitsui
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Hiroki Yamashita
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Atsushi Inaba
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Hironori Sunakawa
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Keiichiro Nakajo
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Tomohiro Kadota
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Kensuke Shinmura
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Hiroaki Ikematsu
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
| | - Tomonori Yano
- Department of Gastroenterology and Endoscopy, National Cancer Center Hospital East, Kashiwa 2778577, Chiba, Japan
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Jäger L, Morales-Orcajo E, Gager A, Bader A, Dillinger A, Blutke A. Preclinical Assessment of Tissue Effects by Gastrointestinal Endoscope Tip Temperature. CURRENT THERAPEUTIC RESEARCH 2023; 98:100693. [PMID: 36820232 PMCID: PMC9937900 DOI: 10.1016/j.curtheres.2023.100693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/19/2023] [Indexed: 01/27/2023]
Abstract
Background Endoscope tips are heated by their electrical and illuminating components. During the procedure, they might get in close or even direct contact with intestinal tissues. Objective To assess endoscope tip and tissue temperature as well as histopathologic changes of gastrointestinal (GI) tissues when exposed to the heated tip of GI endoscopes. Methods The endoscope tip temperatures of four GI endoscopes were measured for 30 minutes in a temperature-controlled chamber. The temperature of ex vivo porcine GI tissues was measured for 5-, 15-, and 120-minute exposure to endoscope tips within a climate chamber to control environmental factors (simulation of fever as worst-case). Exposed tissues were histopathologically examined afterward. Control samples included untreated mucosa, tissue samples exposed to endoscope tips for 120 minutes, as well as tissue samples thermally coagulated with a bipolar high-frequency probe. Results Actual endoscope tip temperatures of 59 to 86°C, dependent on the endoscope type, were measured. After 10 to 15 minutes, the maximum temperatures were reached. Maximum tissue temperatures of 44 to 46°C for 5 and 15 minutes, as well as up to 50°C for 120 minutes, were recorded dependent on tissue and endoscope type. No direct heat-induced histopathologic tissue alterations were observed in the 5- and 15-minute samples. Conclusions Both clinically relevant and a worst-case control were tested. Even though elevated temperatures were recorded, no heat-related tissue alterations were detected. This overall supports the safety profile of GI endoscopy; however, the study findings are limited by the ex vivo setting (no metabolic tissue alterations accessible, no blood flow) and small sample number.
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Affiliation(s)
- Luise Jäger
- Ambu Innovation GmbH, Augsburg, Germany,Address correspondence to: Luise Jäger, Ambu Innovation GmbH, Karl-Drais-Strasse 4B, 86159 Augsburg, Germany.
| | | | - Anna Gager
- Institute of Veterinary Pathology, Center for Clinical Veterinary Medicine, Ludwig-Maximilians Universitaet München, Munich, Germany
| | | | | | - Andreas Blutke
- Institute of Veterinary Pathology, Center for Clinical Veterinary Medicine, Ludwig-Maximilians Universitaet München, Munich, Germany
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Miwa H, Sugimori K, Tsuchiya H, Sugimori M, Nishimura M, Tozuka Y, Komiyama S, Sato T, Kaneko T, Numata K, Maeda S. Novel clip device for prevention of bleeding after endoscopic papillectomy. DEN OPEN 2022; 2:e51. [PMID: 35310706 PMCID: PMC8828220 DOI: 10.1002/deo2.51] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 07/22/2021] [Accepted: 08/05/2021] [Indexed: 12/07/2022]
Abstract
Objectives Recently, a novel clip device, SureClip® (Micro‐Tech Co. Ltd., Nanjing, China), has been developed, which improved rotation and reopening performance. We aimed to assess the efficacy of the SureClip® in prophylactic closure of the mucosal break after endoscopic papillectomy (EP) for ampullary neoplasm. Methods We retrospectively reviewed the medical records of 40 patients who underwent EP for ampullary neoplasms between October 2009 and March 2020. Prophylactic closure after resection was performed using the conventional clip between 2014 and 2018, and with the SureClip® after 2019. The baseline characteristics, techniques, outcomes, and complications of EP were analyzed. Results The median age of the patients (25 males and 15 females) was 70 years. The en block resection rate was 82.5% and the curative resection rate was 80.0%. Histologically, 11 (27.5%) patients had malignancy. Prophylactic closure was performed in 29 (72.5%) patients (17 conventional clips, 12 SureClip®). Complications occurred in 18 (45.0%) patients, including postprocedure bleeding in 9 (22.5%) patients. However, no postprocedure bleeding was observed in the patients who received prophylactic closure using the SureClip® (p = 0.038). All other factors were not significantly correlated with postprocedure bleeding. The duration of hospital stay after EP was significantly shorter in patients treated with the SureClip® compared to those treated with a conventional clip or without clips (p < 0.05). Conclusions In the present study, prophylactic clipping of the mucosal break using the SureClip® was effective in preventing bleeding after EP.
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Affiliation(s)
- Haruo Miwa
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Kazuya Sugimori
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Hiromi Tsuchiya
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Makoto Sugimori
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Masaki Nishimura
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Yuichiro Tozuka
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Satoshi Komiyama
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Takeshi Sato
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Takashi Kaneko
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Kazushi Numata
- Gastroenterological Center Yokohama City University Medical Center Kanagawa Japan
| | - Shin Maeda
- Department of Gastroenterology Graduate School of Medicine, Yokohama City University Kanagawa Japan
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Esaki M, Ihara E, Gotoda T. Endoscopic instruments and techniques in endoscopic submucosal dissection for early gastric cancer. Expert Rev Gastroenterol Hepatol 2021; 15:1009-1020. [PMID: 33909540 DOI: 10.1080/17474124.2021.1924056] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Endoscopic submucosal dissection (ESD) is a less invasive local treatment for early gastric cancer (EGC).Areas covered: Japanese guidelines have recently expanded the endoscopic treatment indications for EGC. ESD is sometimes performed for lesions with a relative indication that has not previously been considered for ESD. ESD procedures are technically difficult, especially for larger and more invasive lesions. Complete resection and accurate histological assessment of EGC lesions are essential to evaluate endoscopic curability. Various endoscopic instruments, including three types of endoscopic knives and specific hemostatic forceps, have been developed, and endoscopic techniques, including the traction method, have been modified to simplify the procedure.Expert opinion: An insulated-tip knife with large tissue contact allows us to perform faster incisions, while a needle-type knife with minimal tissue contact allows us to perform precise incisions. Furthermore, a scissor-type knife with grasping tissues allows us to perform more secure incision. The traction method enables the operator to proceed with submucosal dissection procedures. In cases with small lesions, snaring can be used, as well as knife dissection. Understanding the features of each endoscopic instrument and technique is essential because appropriate selection and usage contribute to successful and safe ESD procedures.
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Affiliation(s)
- Mitsuru Esaki
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
| | - Eikichi Ihara
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Gastroenterology and Metabolism, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takuji Gotoda
- Division of Gastroenterology and Hepatology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
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