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Hong Sik Lee 8 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
AbstractAbstract PDFPubReaderePub
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
  • 3,815 View
  • 99 Download
  • 1 Web of Science
  • 2 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
AbstractAbstract PDFPubReaderePub
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.

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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
  • 5,146 View
  • 161 Download
  • 3 Web of Science
  • 4 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
AbstractAbstract PDFPubReaderePub
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
  • 6,285 View
  • 123 Download
  • 8 Web of Science
  • 9 Crossref
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Job Stress and Job Satisfaction among Health-Care Workers of Endoscopy Units in Korea
Seung-Joo Nam, Hoon Jai Chun, Jeong Seop Moon, Sung Chul Park, Young-Jae Hwang, In Kyung Yoo, Jae Min Lee, Seung Han Kim, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yoon Tae Jeen, Hong Sik Lee, Chang Duck Kim
Clin Endosc 2016;49(3):266-272.   Published online February 22, 2016
DOI: https://doi.org/10.5946/ce.2015.085
AbstractAbstract PDFSupplementary MaterialPubReaderePub
Background
/Aims: The management of job-related stress among health-care workers is critical for the improvement of healthcare services; however, there is no existing research on endoscopy unit workers as a team. Korea has a unique health-care system for endoscopy unit workers. In this study, we aimed to estimate job stress and job satisfaction among health-care providers in endoscopy units in Korea.
Methods
We performed a cross-sectional survey of health-care providers in the endoscopy units of three university-affiliated hospitals in Korea. We analyzed the job stress levels by using the Korean occupational stress scale, contributing factors, and job satisfaction.
Results
Fifty-nine workers completed the self-administered questionnaires. The job stress scores for the endoscopy unit workers (46.39±7.81) were relatively lower compared to those of the national sample of Korean workers (51.23±8.83). Job stress differed across job positions, with nurses showing significantly higher levels of stress (48.92±7.97) compared to doctors (42.59±6.37). Job stress and job satisfaction were negatively correlated with each other (R2 =0.340, p<0.001).
Conclusions
An endoscopy unit is composed of a heterogeneous group of health-care professionals (i.e., nurses, fellows, and professors), and job stress and job satisfaction significantly differ according to job positions. Job demand, insufficient job control, and job insecurity are the most important stressors in the endoscopy unit.

Citations

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  • Stress Is Associated with Quality of Life Reduction among Health Professionals in Vietnam: A Multisite Survey
    Le Thi Kieu Hanh, Ngo Van Toan, Vu Minh Hai, Gianluca Rosso
    Mental Illness.2023; 2023: 1.     CrossRef
  • The Relationship Between Occupational Stress and Turnover Intention Among Emergency Physicians: A Mediation Analysis
    Nan Jiang, Hongling Zhang, Zhen Tan, Yanhong Gong, Mengge Tian, Yafei Wu, Jiali Zhang, Jing Wang, Zhenyuan Chen, Jianxiong Wu, Chuanzhu Lv, Xuan Zhou, Fengjie Yang, Xiaoxv Yin
    Frontiers in Public Health.2022;[Epub]     CrossRef
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    Vishnu Parmar, Zahid Ali Channar, Rizwan Raheem Ahmed, Dalia Streimikiene, Munwar Hussain Pahi, Justas Streimikis
    Oeconomia Copernicana.2022; 13(1): 251.     CrossRef
  • The relationship between job stress and job burnout: the mediating effects of perceived social support and job satisfaction
    Fangyuan Wu, Zheng Ren, Qi Wang, Minfu He, Wenjing Xiong, Guodong Ma, Xinwen Fan, Xia Guo, Hongjian Liu, Xiumin Zhang
    Psychology, Health & Medicine.2021; 26(2): 204.     CrossRef
  • Unique expatriate factors associated with job dissatisfaction among nurses
    S.M.B. Billah, N. Saquib, M.S. Zaghloul, A.M. Rajab, S.M.T. Aljundi, A. Almazrou, J. Saquib
    International Nursing Review.2021; 68(3): 358.     CrossRef
  • Development of a Nurse-Led Competency-Based Program for Therapeutic Endoscopy
    Anne Embertson, Neysa Ernst, Janet Yoder, Libbie Monroe, MaryRose Hess
    Gastroenterology Nursing.2020; 43(6): E217.     CrossRef
  • Organizational Commitment and Job Burnout Effect on Turnover Intention Among Private Hospitals in Karachi
    Fouzia Nasir, Rizwan Raheem Ahmed
    JISR management and social sciences & economics.2019; 17(2): 204.     CrossRef
  • Suriyeli Sığınmacı Kamplarının Bulunduğu İlçelerde Çalışan Sağlık Personelinin İş Stres Seviyesi: Şanlıurfa Örneği
    Hüseyin ERİŞ, Suzan HAVLİOĞLU
    Harran Üniversitesi Tıp Fakültesi Dergisi.2019; 16(3): 435.     CrossRef
  • Needs assessment survey for simulation‐based training for gastrointestinal endoscopy nurses
    Sol Yu, Young Sook Roh
    Nursing & Health Sciences.2018; 20(2): 247.     CrossRef
  • Now, It Is Time to Consider Job Stress in the Field of Gastroenterology
    Young Joo Yang, Gwang Ho Baik
    Clinical Endoscopy.2016; 49(3): 209.     CrossRef
  • Insufficient Job Control among Gastroenterology Trainees: Time to Focus on the Science
    Neel Sharma
    Clinical Endoscopy.2016; 49(5): 492.     CrossRef
  • 11,897 View
  • 170 Download
  • 10 Web of Science
  • 11 Crossref
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Experimental Models of Pancreatitis
Jong Jin Hyun, Hong Sik Lee
Clin Endosc 2014;47(3):212-216.   Published online May 31, 2014
DOI: https://doi.org/10.5946/ce.2014.47.3.212
AbstractAbstract PDFPubReaderePub

Acute pancreatitis is an inflammatory disease characterized by interstitial edema, inflammatory cell infiltration, and acinar cell necrosis, depending on its severity. Regardless of the extent of tissue injury, acute pancreatitis is a completely reversible process with evident normal tissue architecture after recovery. Its pathogenic mechanism has been known to be closely related to intracellular digestive enzyme activation. In contrast to acute pancreatitis, chronic pancreatitis is characterized by irreversible tissue damage such as acinar cell atrophy and pancreatic fibrosis that results in exocrine and endocrine insufficiency. Recently, many studies of chronic pancreatitis have been prompted by the discovery of the pancreatic stellate cell, which has been identified and distinguished as the key effector cell of pancreatic fibrosis. However, investigations into the pathogenesis and treatment of pancreatitis face many obstacles because of its anatomical location and disparate clinical course. Due to these difficulties, most of our knowledge on pancreatitis is based on research conducted using experimental models of pancreatitis. In this review, several experimental models of pancreatitis will be discussed in terms of technique, advantages, and limitations.

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    Journal of Basic and Clinical Physiology and Pharmacology.2022; 33(4): 477.     CrossRef
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    GastroHep.2022; 2022: 1.     CrossRef
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    Journal of Medical Primatology.2022; 51(3): 134.     CrossRef
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    Jing Yang, Xujiao Tang, Qingqing Wu, Panpan Ren, Yishu Yan, Wei Liu, Chun Pan
    Polymers.2022; 14(12): 2470.     CrossRef
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    Yu Ahn, Joo Lim, Hyeyong Kim
    Molecular Medicine Reports.2022;[Epub]     CrossRef
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    Sabrina L McIlwrath, Marlene E Starr, Abigail E High, Hiroshi Saito, Karin N Westlund
    World Journal of Gastroenterology.2021; 27(9): 794.     CrossRef
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    Yang Peng, Jiwon Hong, Daniel Raftery, Qing Xia, Dan Du
    Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease.2021; 1867(7): 166123.     CrossRef
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    Antoine Cournoyer, Dominique Fournier, Marie-Odile Benoit-Biancamano
    Journal of Comparative Pathology.2021; 185: 1.     CrossRef
  • Chlorogenic acid reduces inflammation in murine model of acute pancreatitis
    Aleksandra Tarasiuk, Kamila Bulak, Marcin Talar, Jakub Fichna
    Pharmacological Reports.2021; 73(5): 1448.     CrossRef
  • Engineering of a functional pancreatic acinus with reprogrammed cancer cells by induced PTF1a expression
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    Lab on a Chip.2021; 21(19): 3675.     CrossRef
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    Mattea Durst, Theresia Reding Graf, Rolf Graf, Mareike Kron, Margarete Arras, Dietmar Zechner, Rupert Palme, Steven R. Talbot, Paulin Jirkof
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    Michael Basler, Marcus Groettrup
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  • Docosahexaenoic Acid Induces Expression of NAD(P)H: Quinone Oxidoreductase and Heme Oxygenase-1 through Activation of Nrf2 in Cerulein-Stimulated Pancreatic Acinar Cells
    Yu Jin Ahn, Joo Weon Lim, Hyeyoung Kim
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  • Protective Effect of Nypa fruticans Wurmb. Water Extract on Acute Pancreatitis
    Gi-Sang Bae
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  • Development of an acute pancreatitis porcine model based on endoscopic retrograde infusion of contrast medium or sodium taurocholate
    Jin-Seok Park, Seok Jeong, Joon Mee Kim, Bum Hei Lee, Jae Min Kim, Don Haeng Lee
    The Korean Journal of Internal Medicine.2019; 34(6): 1244.     CrossRef
  • Quantitative Ultrasound and the Pancreas: Demonstration of Early Detection Capability
    Rita J. Miller, Aiguo Han, John W. Erdman, Matthew A. Wallig, William D. O'Brien
    Journal of Ultrasound in Medicine.2019; 38(8): 2093.     CrossRef
  • β1 Syntrophin Supports Autophagy Initiation and Protects against Cerulein-Induced Acute Pancreatitis
    Risheng Ye, Toshiharu Onodera, Pierre-Gilles Blanchard, Christine M. Kusminski, Victoria Esser, Rolf A. Brekken, Philipp E. Scherer
    The American Journal of Pathology.2019; 189(4): 813.     CrossRef
  • Enhanced Neutrophil Extracellular Trap Formation in Acute Pancreatitis Contributes to Disease Severity and Is Reduced by Chloroquine
    Pranav Murthy, Aatur D. Singhi, Mark A. Ross, Patricia Loughran, Pedram Paragomi, Georgios I. Papachristou, David C. Whitcomb, Amer H. Zureikat, Michael T. Lotze, Herbert J. Zeh III, Brian A. Boone
    Frontiers in Immunology.2019;[Epub]     CrossRef
  • Oxidative Stress and NO Generation in Cerulein-Induced Acute Pancreatitis in Rats
    K. Tiemann, J. Schnekenburger, V. Schick, U. Demus, U. Müller-Werdan, D. A. Atiakshin, W. Boecker, V. E. Samoilova, I. B. Buchwalow
    Journal of Anatomy and Histopathology.2019; 8(1): 68.     CrossRef
  • Examination of protective and therapeutic effects of ruscogenin on cerulein-induced experimental acute pancreatitis in rats
    Gulcin Ercan, Rumeysa İlbar Tartar, Ali Solmaz, Osman Bilgin Gulcicek, Onur Olgac Karagulle, Serhat Meric, Huseyin Cayoren, Ramazan Kusaslan, Ahu Kemik, Damla Gokceoglu Kayali, Sule Cetinel, Atilla Celik
    Annals of Surgical Treatment and Research.2019; 97(6): 271.     CrossRef
  • Docosahexaenoic Acid Inhibits Expression of Fibrotic Mediators in Mice With Chronic Pancreatitis
    Sle Lee, Yoo Kyung Jeong, Joo Weon Lim, Hyeyoung Kim
    Journal of Cancer Prevention.2019; 24(4): 233.     CrossRef
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    Laura Gaman, Dorin Dragos, Adelina Vlad, Georgiana Catalina Robu, Mugurel Petrinel Radoi, Laura Stroica, Mihaela Badea, Marilena Gilca
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Acute Duodenal Ischemia and Periampullary Intramural Hematoma after an Uneventful Endoscopic Retrograde Cholangiopancreatography in a Patient with Primary Myelofibrosis
Chang Ho Jung, Jong Jin Hyun, Dae Hoe Gu, Eul Sun Moon, Jae Seon Kim, Hong Sik Lee, Chang Duck Kim
Clin Endosc 2014;47(3):270-274.   Published online May 31, 2014
DOI: https://doi.org/10.5946/ce.2014.47.3.270
AbstractAbstract PDFPubReaderePub

Acute duodenal ischemia and periampullary intramural hematoma are rare complications after endoscopic retrograde cholangiopancreatography (ERCP). A 77-year-old man with splenomegaly complained of abdominal pain caused by common bile duct (CBD) stone. After successful removal of the CBD stone without immediate complications, the patient developed intramural hematoma around the ampulla of Vater along with diffuse duodenal edema. The findings were compatible with acute intestinal ischemia, and further evaluation revealed that he had underlying primary myelofibrosis. Myeloproliferative diseases are known to be significantly associated with an increased risk of thrombohemorrhagic complications. Therefore, particular attention should be given to this group of patients when a high-risk procedure such as ERCP is performed.

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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
AbstractAbstract PDFPubReaderePub
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

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    Tara M. Urner, Andrew Inman, Benjamin Lapid, Shu Jia
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    Baldwin Po Man Yeung
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    Geun Am Song
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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
AbstractAbstract PDFPubReaderePub
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.

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