Clinical Endoscopy

Original Articles

Feasibility of Wearable Display Glasses for Medical Students in the Endoscopy Room: Kang Won Lee, Hyuk Soon Choi, Hoon Jai Chun, Jae Min Lee, Eun Sun Kim, Bora Keum, Yeon Seok Seo, Yoon Tae Jeen, Soon Ho Um, Hong Sik Lee; Clin Endosc 2021;54(5):694-700. Published online March 15, 2021; DOI: https://doi.org/10.5946/ce.2020.246

Background
/Aims: Several attempts have been made to incorporate smart glasses in the medical field. We applied wearable display glasses to show the position of an observer during endoscopy and compared students’ responses between the conventional and new methods.
Methods
We surveyed 28 medical students regarding the use of wearable display devices. The students used wearable display glasses to observe an endoscopic procedure and answered the prepared questionnaire. Their collected responses were analyzed for statistical correlations between each variable.
Results
The survey of medical students revealed disadvantages including dizziness (dissatisfied and very dissatisfied: 21.5%) and eye fatigue (25% dissatisfied) and advantages including concentration (satisfied and very satisfied: 57.2%) and securing patient rights (71.4%). The students showed more positive than negative reviews regarding the new devices (32.1% vs. 21.5%).
Conclusions
We investigated the advantages and disadvantages of viewing the endoscope image with new wearable display glasses compared to the conventional method using the survey to record user experience. The results revealed relatively positive responses from the medical students in the survey. If the new device compensates for some shortcomings, its use in the endoscopy room will be feasible.

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A remote clinical clerkship program for severe COVID-19 in ICU using smart glasses: questionnaire survey
Nobuyuki Nosaka, Hideo Yamanouch, Kazuki Takada, Kenji Wakabayashi
Journal of the Japanese Society of Intensive Care Medicine.2023; 30(4): 261. CrossRef
Smart Glasses to Facilitate Ultrasound Guided Peripheral Intravenous Access in the Simulation Setting for Thai Emergency Medical Service Providers
Kamonwon Ienghong, Lap Woon Cheung, Pornpawit Wongwan, Korakot Apiratwarakul
Journal of Multidisciplinary Healthcare.2023; Volume 16: 2201. CrossRef

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Novel Ablation Therapy Using Endoscopic Irreversible Electroporation in the Bile Duct: A Pilot Animal Study: Kang Won Lee, Jae Min Lee, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yeon Seok Seo, Yoon Tae Jeen, Soon Ho Um, Hong Sik Lee, Hoon Jai Chun, Chang Duck Kim, Chi Hyuk Oh, Hong Bae Kim; Clin Endosc 2021;54(3):413-419. Published online October 20, 2020; DOI: https://doi.org/10.5946/ce.2020.126

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Background
/Aims: Irreversible electroporation (IRE) is a relatively new ablation method. However, the application of IRE ablation in the treatment of biliary disease has not been attempted. A minimally invasive approach using endoscopic retrograde cholangiopancreatography (ERCP) can be a novel therapeutic modality for IRE ablation. In this study, we aimed to investigate the feasibility of endoscopic IRE for the biliary tract using an animal model.
Methods
A new catheter-type electrode was developed for endoscopic IRE ablation of the biliary tract. We performed ERCP and endoscopic IRE ablations in the normal common bile duct of Yorkshire pigs. The experimental setting of IRE was 500 V/cm (50 pulses, 100-µs length). The animals were sacrificed after 24 hr, and the ablated bile duct was examined.
Results
Well-demarcated focal color changes were observed on the mucosa of the common bile duct. The depth of change after IRE was confined to the mucosal and submucosal layers. Apoptotic changes in the bile duct were observed only around the IRE ablation area. Immunohistochemistry assay showed cell death in the bile duct along the electrode.
Conclusions
Endoscopic IRE ablation using ERCP was successfully performed in the common bile duct. It can be a potential option for the treatment of biliary tumors.

Citations

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Balloon‐assisted laser application for endoscopic treatment of biliary stricture
Seonghee Lim, Van Gia Truong, Seok Jeong, Jiho Lee, Byeong‐il Lee, Hyun Wook Kang
Lasers in Surgery and Medicine.2023; 55(10): 912. CrossRef
Biliary complications and efficacy after ablation of peribiliary tumors using irreversible electroporation (IRE) or radiofrequency ablation (RFA)
Somrach Thamtorawat, Rujira Patanawanitkul, Satit Rojwatcharapibarn, Walailak Chaiyasoot, Trongtum Tongdee, Jirawadee Yodying, Sukrit Sorotpinya
International Journal of Hyperthermia.2022; 39(1): 751. CrossRef
Large Animal Models in Pancreas and Biliary Disease
Seok Jeong, Jin-Seok Park, Don Haeng Lee
The Korean Journal of Gastroenterology.2021; 77(3): 99. CrossRef
Comparison of four endoluminal radiofrequency ablation devices and four power generators in an ex vivo bovine liver model
Stephan Rheinheimer, Anna Jacobsen, Philipp Mayer, Hans-Ulrich Kauczor, Andreas Mahnken
World Academy of Sciences Journal.2021;[Epub] CrossRef

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Is There a Change in Patient Preference for a Female Colonoscopist during the Last Decade in Korea?: Jung Min Lee, Eun Sun Kim, Hoon Jai Chun, In Kyung Yoo, Jae Min Lee, Seung Han Kim, Hyuk Soon Choi, Bora Keum, Yeon Seok Seo, Hong Sik Lee, Yoon Tae Jeen, Jong-Jae Park, Sang Woo Lee, Soon Ho Um, Chang Duck Kim; Clin Endosc 2018;51(1):72-79. Published online October 10, 2017; DOI: https://doi.org/10.5946/ce.2017.057

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Background
/Aims: Patients may feel embarrassed during colonoscopy. Our study aimed to assess changes in patient preference, over the past decade, for the sex of their colonoscopist.
Methods
Prospective studies were performed at a single health center from July to September 2008, and from July to September 2016. Subjects included colonoscopy patients (2008: 354, 2016: 304) who were asked to complete a questionnaire before colonoscopy.
Results
In 2016, 69 patients (24.9%) expressed a sex preference, compared with 46 patients (14.6%) in 2008. By 2016, female patient preference for a female colonoscopist had significantly increased to 95% (odds ratio [OR], 2.678; 95% confidence interval [CI], 1.418– 5.057; P=0.002). In multivariate analysis, patient sex (OR, 4.404; P=0.000), patient age (OR, 0.977; 95% CI, 0.961–0.992; P=0.004), and year of procedure (OR, 1.674; 95% CI, 1.028–2.752) were statistically significant factors in sex preference. Between 2008 and 2016, female patients preferred a female colonoscopist because of embarrassment. Male patients also preferred a male colonoscopist, and the primary reason shifted from expertise to patient embarrassment (2008: 29%, 2016: 63%).
Conclusions
Patients have an increased gender preference for the colonoscopist because of embarrassment. Taking this into account can increase patient satisfaction during colonoscopy.

Citations

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Screening Perspectives: The Role of Colorectal Cancer Awareness in Shaping Attitudes Toward Colonoscopy in Palestine
Mohamedraed Elshami, Maram Albandak, Mohammed Alser, Ibrahim Al-Slaibi, Mohammed Ayyad, Mohammad F. Dwikat, Shoruq A. Naji, Balqees M. Mohamad, Wejdan S. Isleem, Adela Shurrab, Bashar Yaghi, Yahya Ayyash Qabaja, Fatma K. Hamdan, Raneen R. Sweity, Remah T.
JCO Global Oncology.2024;[Epub] CrossRef
Gender of endoscopist and endoscopy staff: Patient preference
Mayank Jain
Indian Journal of Gastroenterology.2023; 42(1): 143. CrossRef
Sex/gender differences in gastrointestinal endoscopy from the perspective of patients and gastroenterologists
Nayoung Kim
Clinical Endoscopy.2023; 56(3): 268. CrossRef
Canadian Gastroenterology Career Pathway Experiences: Exploring the Gender Divide
Noor Jawaid, Monica Boctor, Jordan LoMonaco, Natasha Bollegala
Journal of the Canadian Association of Gastroenterology.2022; 5(4): 177. CrossRef
Intentions to undergo primary screening with colonoscopy under the National Cancer Screening Program in Korea
Kyeongmin Lee, Haejoo Seo, Sunho Choe, Seung-Yong Jeong, Ji Won Park, Mina Suh, Aesun Shin, Kui Son Choi, Filipe Prazeres
PLOS ONE.2021; 16(2): e0247252. CrossRef
Does provider gender matter in endoscopy? An international perspective
Pascale Anglade, Halah Ibrahim, Sawsan Abdel-Razig
Gastrointestinal Endoscopy.2021; 93(5): 1160. CrossRef
Identifying Gender Barriers for Colorectal Cancer Screening and Assessing the Need for a Multigender Endoscopy Team: A Prospective Multicenter Study
Harshit S. Khara, Darshan Suthar, Marika Bergenstock, Andrea Berger, Jessica L. McKee, Dana Stewart, Samuel R. Theis, Michael Komar, Amitpal S. Johal, Diego R. Valencia Chavez, William B. Hale, Rakhee Mangla
American Journal of Gastroenterology.2021; 116(8): 1646. CrossRef
Unique perspective of Muslim patients on gender preference for GI endoscopists: a multicenter survey
Lubna Kamani, Nazish Butt, Farheen Taufiq, Ana Garcia de Paredes, Elizabeth Rajan
Gastrointestinal Endoscopy.2021; 94(6): 1110. CrossRef
Using Etomidate and Midazolam for Screening Colonoscopies Results in More Stable Hemodynamic Responses in Patients of All Ages
Jung Min Lee, Geeho Min, Bora Keum, Jae Min Lee, Seung Han Kim, Hyuk Soon Choi, Eun Sun Kim, Yeon Seok Seo, Yoon Tae Jeen, Hoon Jai Chun, Hong Sik Lee, Soon Ho Um, Chang Duck Kim
Gut and Liver.2019; 13(6): 649. CrossRef

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Feasibility of Obtaining Quantitative 3-Dimensional Information Using Conventional Endoscope: A Pilot Study: Jong Jin Hyun, Hoon Jai Chun, Bora Keum, Yeon Seok Seo, Yong Sik Kim, Yoon Tae Jeen, Hong Sik Lee, Soon Ho Um, Chang Duck Kim, Ho Sang Ryu, Jong-Wook Lim, Dong-Gi Woo, Young-Joong Kim, Myo-Taeg Lim; Clin Endosc 2012;45(3):182-188. Published online August 22, 2012; DOI: https://doi.org/10.5946/ce.2012.45.3.182

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Background/Aims

Three-dimensional (3D) imaging is gaining popularity and has been partly adopted in laparoscopic surgery or robotic surgery but has not been applied to gastrointestinal endoscopy. As a first step, we conducted an experiment to evaluate whether images obtained by conventional gastrointestinal endoscopy could be used to acquire quantitative 3D information.

Methods

Two endoscopes (GIF-H260) were used in a Borrmann type I tumor model made of clay. The endoscopes were calibrated by correcting the barrel distortion and perspective distortion. Obtained images were converted to gray-level image, and the characteristics of the images were obtained by edge detection. Finally, data on 3D parameters were measured by using epipolar geometry, two view geometry, and pinhole camera model.

Results

The focal length (f) of endoscope at 30 mm was 258.49 pixels. Two endoscopes were fixed at predetermined distance, 12 mm (d₁₂). After matching and calculating disparity (v2-v1), which was 106 pixels, the calculated length between the camera and object (L) was 29.26 mm. The height of the object projected onto the image (h) was then applied to the pinhole camera model, and the result of H (height and width) was 38.21 mm and 41.72 mm, respectively. Measurements were conducted from 2 different locations. The measurement errors ranged from 2.98% to 7.00% with the current Borrmann type I tumor model.

Conclusions

It was feasible to obtain parameters necessary for 3D analysis and to apply the data to epipolar geometry with conventional gastrointestinal endoscope to calculate the size of an object.

Citations

Citations to this article as recorded by

Three-dimensional light-field microendoscopy with a GRIN lens array
Tara M. Urner, Andrew Inman, Benjamin Lapid, Shu Jia
Biomedical Optics Express.2022; 13(2): 590. CrossRef
3D light-field endoscopic imaging using a GRIN lens array
Changliang Guo, Tara Urner, Shu Jia
Applied Physics Letters.2020;[Epub] CrossRef
Current and emerging robotic assisted intervention for Notes
Siyang Zuo, Shuxin Wang
Expert Review of Medical Devices.2016; 13(12): 1095. CrossRef
Application of robotics in gastrointestinal endoscopy: A review
Baldwin Po Man Yeung
World Journal of Gastroenterology.2016; 22(5): 1811. CrossRef
Quantitative analysis of velopharyngeal movement using a stereoendoscope: accuracy and reliability of range images
Asuka Nakano, Katsuaki Mishima, Ruriko Shiraishi, Yoshiya Ueyama
Computer Aided Surgery.2015; 20(1): 29. CrossRef
The Evolution of the Conventional Endoscope in an Era of 3-Dimensional Technology
Geun Am Song
Clinical Endoscopy.2012; 45(3): 181. CrossRef

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Comparison on the Efficacy of Disinfectants Used in Automated Endoscope Reprocessors: PHMB-DBAC versus Orthophthalaldehyde: Sun Young Kim, Hong Sik Lee, Jong Jin Hyun, Min Ho Seo, Sun Young Yim, Ha Young Oh, Hye Sook Kim, Bora Keum, Yeon Seok Seo, Yong Sik Kim, Yoon Tae Jeen, Hoon Jai Chun, Soon Ho Um, Chang Duck Kim, Ho Sang Ryu; Clin Endosc 2011;44(2):109-115. Published online December 31, 2011; DOI: https://doi.org/10.5946/ce.2011.44.2.109

Abstract PDF PubReader ePub

Background/Aims

Since endoscopes are reusable apparatus classified as semicritical item, thorough reprocessing to achieve high-level disinfection is of utmost importance to prevent spread of infection. To improve disinfection efficacy and safety, disinfectants and endoscope reprocessors are continuously evolving. This study aimed to compare the efficacy of the combination of polyhexamethylenebiguanide hydrochloride-alkyldimethylbenzylammonium chloride (PHMB-DBAC) and orthophthalaldehyde (OPA) used respectively in ultrasonographic cleaning incorporated automated endoscope reprocessors: COOLENDO (APEX Korea) or OER-A (Olympus Optical).

Methods

A total of 86 flexible upper endoscopes were randomly reprocessed with either COOLENDO/PHMB-DBAC or OER-A/OPA. Culture samplings were done at two sites (endoscope tip and working channel) which were later incubated on blood agar plate. Bacterial colonies were counted and identified.

Results

The culture-positive rate at the endoscope tip and working channel was 0% and 2.33% for COOLENDO/PHMB-DBAC and 4.65% and 0% for OER-A/OPA. Staphylococcus hominis was cultured from one endoscope reprocessed with COOLENDO/PHMB-DBAC and Pseudomonas putida was isolated from two endoscopes reprocessed with OER-A/OPA.

Conclusions

The reprocessing efficacy of COOLENDO/PHMB-DBAC was non-inferior to that of OER-A/OPA (p=0.032; confidence interval, -0.042 to 0.042). During the study period, significant side effect of PHMB-DBAC was not observed.

Citations

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Recommendations and guidelines for endoscope reprocessing: Current position statement of digestive endoscopic society of Taiwan
Wei-Kuo Chang, Chen-Ling Peng, Yen-Wei Chen, Cheuk-Kay Sun, Chieh-Chang Chen, Tao-Chieh Liu, Yin-Yi Chu, I-Fang Tsai, Chen-Shuan Chung, Hsiao-Fen Lin, Fang-Yu Hsu, Wei-Chen Tai, Hsi-Chang Lee, Hsu-Heng Yen, E-Ming Wang, Shu-Hui Chen, Cheng-Hsin Chu, Ming-
Journal of Microbiology, Immunology and Infection.2024; 57(2): 211. CrossRef
Antibacterial Activity of Tannic Acid and Tannic Acid/Amphiphilic Cationic Polymer Mixtures
Fatimah M. Alzahrani, Stephen G. Yeates, Michelle Webb, Hind Ali Alghamdi
Asian Journal of Chemistry.2020; 32(6): 1491. CrossRef
Antibacterial activity of Staphylococcus aureus biofilm under combined exposure of glutaraldehyde, near-infrared light, and 405-nm laser
Van Nam Tran, Chakradhar Dasagrandhi, Van Gia Truong, Young-Mog Kim, Hyun Wook Kang, Michael R. Hamblin
PLOS ONE.2018; 13(8): e0202821. CrossRef
Comparison of the efficacy of disinfectants in automated endoscope reprocessors for colonoscopes: tertiary amine compound (Sencron2®) versus ortho-phthalaldehyde (Cidex®OPA)
Hyun Il Seo, Dae Sung Lee, Eun Mi Yoon, Min-Jung Kwon, Hyosoon Park, Yoon Suk Jung, Jung Ho Park, Chong Il Sohn, Dong Il Park
Intestinal Research.2016; 14(2): 178. CrossRef
Role of Clinical Endoscopy in Emphasizing Endoscope Disinfection
Ji Kon Ryu, Eun Young Kim, Kwang An Kwon, Il Ju Choi, Ki Baik Hahm
Clinical Endoscopy.2015; 48(5): 351. CrossRef
Recent Update of Gastrointestinal Endoscope Reprocessing
Kyong Hee Hong, Yun Jeong Lim
Clinical Endoscopy.2013; 46(3): 267. CrossRef
Steps of Reprocessing and Equipments
Yong Kook Lee, Jeong Bae Park
Clinical Endoscopy.2013; 46(3): 274. CrossRef
The antibiofilm effects of Byotrol™ G32
N. Govindji, P. Wills, M. Upton, N. Tirelli, S. Yeates, M. Webb
Journal of Applied Microbiology.2013; 114(5): 1285. CrossRef

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