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Matsumoto K, Imagawa A, Ueda N, Watabe H, Ikebuchi Y, Kurumi H, Sasaki YU, Abe Y, Abe R, Mabe K, Noma H, Fujiwara K, Ueki M, Fujishiro M, Isomoto H. Acceptability, Safety, and Feasibility of Transnasal and Peroral Ultrathin Endoscopy Using GAGLESS Mouthpieces: A Prospective Randomized Trial. In Vivo 2024; 38:826-832. [PMID: 38418116 PMCID: PMC10905482 DOI: 10.21873/invivo.13507] [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: 11/07/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 03/01/2024]
Abstract
BACKGROUND/AIM Esophagogastroduodenoscopy (EGD) is an effective screening method for early detection of gastric cancer. The GAGLESS mouthpiece has a structure that widens the pharyngeal cavity and suppresses the pharyngeal reflex. This study aimed to investigate the acceptability, safety, and feasibility of transnasal and peroral ultrathin endoscopy using GAGLESS mouthpieces (Clinical Trial Number: UMIN000036922). PATIENTS AND METHODS This study was a multicenter, prospective, randomized, open-label trial performed using a questionnaire. The study included 101 consecutive patients who visited the participating medical institutions between June 2019 and March 2022 (median age=47 years, range=24-87 years; all male). Patients aged ≥20 years at the time of consent acquisition who were the first to undergo EGD were included in the study. The primary endpoint was the degree of distress during EGD, as determined using a visual analog scale (VAS). RESULTS The VAS score during endoscopic passage through the pharynx was significantly better in the transnasal endoscopy group than in the oral endoscopy group (2.420 vs. 4.092, p=0.001). There was no significant difference in the VAS scores between the two groups during anesthesia or throughout the examination. Compared with nasal endoscopy, oral endoscopy with a GAGLESS mouthpiece did not reduce the VAS score but did significantly improve gastric visibility. CONCLUSION For patients in whom there was difficulty in inserting a nasal endoscope, using a GAGLESS mouthpiece rather than a conventional mouthpiece may be more useful in reducing pain.
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Affiliation(s)
- Kazuya Matsumoto
- Division of Gastroenterology and Nephrology, Department of Multidisciplinary Internal Medicine, Tottori University Faculty of Medicine, Yonago, Japan;
- Irisawa Medical Clinic, Matsue, Japan
| | | | - Naoki Ueda
- Yasugi Municipal Hospital, Yasugi, Japan
| | | | - Yuichiro Ikebuchi
- Division of Gastroenterology and Nephrology, Department of Multidisciplinary Internal Medicine, Tottori University Faculty of Medicine, Yonago, Japan
| | - Hiroki Kurumi
- Division of Gastroenterology and Nephrology, Department of Multidisciplinary Internal Medicine, Tottori University Faculty of Medicine, Yonago, Japan
| | - Y U Sasaki
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yasuhiko Abe
- Department of Gastroenterology, Faculty of Medicine, Yamagata University, Yamagata, Japan
- Division of Endoscopy, Yamagata University Hospital, Yamagata, Japan
| | - Ryo Abe
- Yonago Chuo Clinic, Yonago, Japan
| | - Katsuhiro Mabe
- Junpukai Health Maintenance Center Kurashiki, Kurashiki, Japan
| | - Hisashi Noma
- Department of Data Science, The Institute of Statistical Mathematics, Tachikawa, Japan
| | - Kazunori Fujiwara
- Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Masaru Ueki
- Division of Medical Education, Department of Medical Education, Tottori University Faculty of Medicine, Yonago, Japan
| | - Mitsuhiro Fujishiro
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hajime Isomoto
- Division of Gastroenterology and Nephrology, Department of Multidisciplinary Internal Medicine, Tottori University Faculty of Medicine, Yonago, Japan
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Urahama R, Uesato M, Aikawa M, Yamaguchi Y, Hayano K, Matsumura T, Arai M, Kunii R, Isono S, Matsubara H. Polysomnographic assessment of respiratory disturbance during deep propofol sedation for endoscopic submucosal dissection of gastric tumors. World J Gastrointest Endosc 2018; 10:340-347. [PMID: 30487944 PMCID: PMC6247095 DOI: 10.4253/wjge.v10.i11.340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 08/21/2018] [Accepted: 10/09/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate that polysomnographic monitoring can accurately evaluate respiratory disturbance incidence during sedation for gastrointestinal endoscopy compare to pulse oximetry alone.
METHODS This prospective observational study included 10 elderly patients with early gastric cancer undergoing endoscopic submucosal dissection (ESD) under propofol sedation. Apart from routine cardiorespiratory monitoring, polysomnography measurements were acquired. The primary hypothesis was tested by comparing the apnea hypopnea index (AHI), defined as the number of apnea and hypopnea instances per hour during sedation, with and without hypoxemia; hypoxemia was defined as the reduction in oxygen saturation by ≥ 3% from baseline.
RESULTS Polysomnography (PSG) detected 207 respiratory disturbances in the 10 patients. PSG yielded a significantly greater AHI (10.44 ± 5.68/h) compared with pulse oximetry (1.54 ± 1.81/h, P < 0.001), thus supporting our hypothesis. Obstructive AHI (9.26 ± 5.44/h) was significantly greater than central AHI (1.19 ± 0.90/h, P < 0.001). Compared with pulse oximetry, PSG detected the 25 instances of respiratory disturbances with hypoxemia 107.4 s earlier on average.
CONCLUSION Compared with pulse oximetry, PSG can better detect respiratory irregularities and thus provide superior AHI values, leading to avoidance of fatal respiratory complications during ESD under propofol-induced sedation.
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Affiliation(s)
- Ryuma Urahama
- Department of Frontier Surgery, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Masaya Uesato
- Department of Frontier Surgery, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Mizuho Aikawa
- Department of Frontier Surgery, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Yukiko Yamaguchi
- Department of Frontier Surgery, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Koichi Hayano
- Department of Frontier Surgery, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Tomoaki Matsumura
- Department of Gastroenterology, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Makoto Arai
- Department of Medical Oncology, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Reiko Kunii
- Staff of Clinical Laboratory, Chiba University Hospital, Chiba 260-8677, Japan
| | - Shiroh Isono
- Department of Anesthesiology, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Hisahiro Matsubara
- Department of Frontier Surgery, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
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