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Liu W, Choi SJ, George D, Li L, Zhong Z, Zhang R, Choi SY, Selaru FM, Gracias DH. Untethered shape-changing devices in the gastrointestinal tract. Expert Opin Drug Deliv 2023; 20:1801-1822. [PMID: 38044866 PMCID: PMC10872387 DOI: 10.1080/17425247.2023.2291450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 12/01/2023] [Indexed: 12/05/2023]
Abstract
INTRODUCTION Advances in microfabrication, automation, and computer engineering seek to revolutionize small-scale devices and machines. Emerging trends in medicine point to smart devices that emulate the motility, biosensing abilities, and intelligence of cells and pathogens that inhabit the human body. Two important characteristics of smart medical devices are the capability to be deployed in small conduits, which necessitates being untethered, and the capacity to perform mechanized functions, which requires autonomous shape-changing. AREAS COVERED We motivate the need for untethered shape-changing devices in the gastrointestinal tract for drug delivery, diagnosis, and targeted treatment. We survey existing structures and devices designed and utilized across length scales from the macro to the sub-millimeter. These devices range from triggerable pre-stressed thin film microgrippers and spring-loaded devices to shape-memory and differentially swelling structures. EXPERT OPINION Recent studies demonstrate that when fully enabled, tether-free and shape-changing devices, especially at sub-mm scales, could significantly advance the diagnosis and treatment of GI diseases ranging from cancer and inflammatory bowel disease (IBD) to irritable bowel syndrome (IBS) by improving treatment efficacy, reducing costs, and increasing medication compliance. We discuss the challenges and possibilities associated with ensuring safe, reliable, and autonomous operation of these smart devices.
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Affiliation(s)
- Wangqu Liu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Soo Jin Choi
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Derosh George
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Ling Li
- Gastroenterology and Hepatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Zijian Zhong
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Ruili Zhang
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Si Young Choi
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Florin M. Selaru
- Gastroenterology and Hepatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - David H. Gracias
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Laboratory for Computational Sensing and Robotics (LCSR), Johns Hopkins University, Baltimore, MD 21218, USA
- Sidney Kimmel Comprehensive Cancer Center (SKCCC), Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
- Center for MicroPhysiological Systems (MPS), Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
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Negm S, Farag A, Shafiq A, Allah EA, Shehata M, Orban YA, Saleh M, Abdelghani AA. Endoscopic management of low output recurrent colonic fistula or leak after anterior resection for rectal cancer: a randomized controlled trial. Surg Endosc 2023:10.1007/s00464-023-10092-z. [PMID: 37145174 PMCID: PMC10338381 DOI: 10.1007/s00464-023-10092-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 04/19/2023] [Indexed: 05/06/2023]
Abstract
BACKGROUND Colonic anastomotic leak and fistula following anterior resection surgery for rectal cancer are associated with high mortality rates. The incidence of occurrence varies from 2 to 25% and it is difficult to accurately calculate the incidence of fistula and leak post anterior resection, as most of them are asymptomatic. Endoscopic management of fistula and leak has become the first line of management after conservative management in many gastrointestinal surgical centers with the advantages of being less invasive, shorter length of post-operative hospital stay, effective and rapid recovery in comparison to revision surgery. Effective endoscopic management for colonic fistula or leak depends on the clinical status of the patient and fistula characters (time-to-occur and size and site of defect), and device availability. METHODS This prospective randomized controlled clinical trial included all patients who developed the manifestations of low output recurrent colonic fistula or leak after colonic anterior resection for rectal cancer at Zagazig University Hospital between (December 2020 and August 2022). Sample size was 78 patients divided into two equal groups. Endoscopic group (EG): included 39 patients who underwent endoscopic management. Surgical group (SG): included 39 patients who underwent surgical management. RESULTS The investigators randomized eligible 78 patients into two groups: 39 patients in SG and 39 patients in EG. The median size of the fistula or leak was nine (range: 7-14) mm in EG, versus ten (range: 7-12) mm in SG. Clipping and Endo-stitch device were used in 24 patients versus 15 patients, respectively, in EG while primary repair with ileostomy, and resection & anastomosis were used in 15 patients versus 24 patients, respectively, in SG. Recurrence, abdominal collection, and mortality were the post procedure's complications with incidence of occurrence of 10.3, 7.7 and 0%, respectively, in EG versus 20.5, 20.5 and 2.6%, respectively, in SG. Excellent, good, and poor were the parameters for quality of life with incidence of occurrence of 43.6, 54.6 and 0%, respectively, in EG versus 28.2, 33.3 and 38.5%, respectively, in SG. Median hospital stay was one (range: 1-2) day in endoscopic group, and seven (range: 6-8) days in SG. CONCLUSION Endoscopic intervention may offer a successful modality in managing low output recurrent colonic fistula or leak after anterior resection for rectal cancer that did not respond to conservative measures in stable patients. CLINICALTRIALS gov ID: NCT05659446.
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Affiliation(s)
- Said Negm
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
| | - Ahmed Farag
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Ahmed Shafiq
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Ehab Abd Allah
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Mohamed Shehata
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Yasser A Orban
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Mohamed Saleh
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Amr A Abdelghani
- General Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Keraliya A, Yu HS, Uyeda JW. CT imaging findings of complications of optical colonoscopy. Emerg Radiol 2022; 29:915-923. [PMID: 35710648 DOI: 10.1007/s10140-022-02058-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 05/06/2022] [Indexed: 10/18/2022]
Abstract
Colonoscopy is one of the most commonly performed endoscopic procedures and remains the most commonly used screening modality method for colorectal cancer (CRC) screening in the USA. Although serious complications of fiberoptic colonoscopy are uncommon due to technical advances, due to increasing number of colonoscopy procedures, post-procedural complications are not uncommonly encountered in the routine clinical practice. Also, as some of the post-colonoscopy complications are life threatening, it is important to diagnose them early so that timely treatment measures can be taken to decrease mortality and morbidity. In this review, we present a case-based illustration of the utility of CT to detect complications of colonoscopy including bowel perforation, hemorrhage, splenic injury, and postpolypectomy syndrome.
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Affiliation(s)
- Abhishek Keraliya
- Department of Radiology, Emergency Radiology Division, Brigham and Women's Hospital/Harvard Medical School, Boston, MA, USA
| | - Hei Shun Yu
- Department of Radiology, Emergency Radiology Division, Brigham and Women's Hospital/Harvard Medical School, Boston, MA, USA
| | - Jennifer W Uyeda
- Department of Radiology, Emergency Radiology Division, Brigham and Women's Hospital/Harvard Medical School, Boston, MA, USA.
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Jiehua Z, Kashif A, YaoSheng C, YunYun S, Lanyu L. Analysis of the Characteristics of Colonoscopy Perforation and Risk Factors for Failure of Endoscopic Treatment. Cureus 2022; 14:e25677. [PMID: 35812566 PMCID: PMC9259074 DOI: 10.7759/cureus.25677] [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] [Accepted: 06/05/2022] [Indexed: 12/24/2022] Open
Abstract
Background: Many studies have been done regarding perforation after colonoscopy, but few studies analyzed the risk factors of endoscopic treatment failure after colonoscopy perforation. This study aimed to analyze the clinical characteristics and treatment plan of those patients with perforation after colonoscopy diagnosis and the treatment and risk factors of failure to endoscopic treatment. Method: This was a retrospective observational study of patients who underwent colonoscopy examination and treatment at the Affiliated Hospital of Yangzhou University, from 04/2009 to 03/2020. The patients were grouped as perforation, treatment success, or failure (required laparoscopy or laparotomy). Results: From April 2009 to March 2020, 43,470 patients were examined and treated with colonoscopy. There were 35 cases of intestinal perforation, for an incidence of 0.081%. Four patients had immediate surgical intervention (two patients with laparoscopic surgery and two with laparotomy surgery). Thirty-one (88.57%) patients underwent endoscopic treatment. Endoscopic treatment was successful in 20 patients and failed in 11. Compared with the failure group, the perforation size in the success group was smaller (7.60±4.85 vs. 14.4±7.03 mm, P=0.004), hospital stay was shorter (26.6±13.1 vs. 14.2±3.0, P=0.011), and hospitalization costs were lower (30,208±9506 vs. 23,053±6227 RMB, P=0.002). Multivariable logistic stepwise analysis showed that the absence of abdominal pain after therapeutic colonoscopy was independently associated with the success of endoscopic treatment. Conclusions: Endoscopic treatment is logically the preferred modality for perforation management, leading to good recovery, shorter hospital stay, and lower costs of treatment. Postoperative abdominal pain is significantly related to the failure of endoscopic treatment.
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Jung Y, Kim JW, Im JP, Cho YK, Lee TH, Jang JY. Safety of Gastrointestinal Endoscopy in Korea: A Nationwide Survey and Population-Based Study. J Korean Med Sci 2022; 37:e24. [PMID: 35075823 PMCID: PMC8787800 DOI: 10.3346/jkms.2022.37.e24] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 12/02/2021] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Attention should be paid to endoscopy-related complications and safety-related accidents that may occur in the endoscopy unit. This study investigated the current status of complications associated with diagnostic and therapeutic endoscopy in Korea. METHODS A questionnaire survey on endoscopy-related complications was conducted in a total of 50 tertiary or general hospitals in Korea. The results were compared to the population-level claims data from the Health Insurance Review & Assessment Service (HIRA), which analyzed endoscopy procedures conducted in 2017 in Korea. RESULTS The incidences of bleeding associated with diagnostic and therapeutic esophagogastroduodenoscopy (EGD) and with diagnostic and therapeutic colonoscopy were 0.224% and 3.155% and 0.198% and 0.356%, respectively, in the 2017 HIRA claims data, compared to 0.012% and 1.857%, and 0.024% and 0.717%, in the 50 hospitals surveyed. The incidences of perforation associated with diagnostic and therapeutic EGD and with diagnostic and therapeutic colonoscopy were 0.023% and 0.613%, and 0.007% and 0.013%, respectively, in the 2017 HIRA claims data compared to 0.001% and 0.325%, and 0.017% and 0.206%, in the 50 hospitals surveyed. In the HIRA claims data, the incidence of bleeding/perforation after diagnostic colonoscopy in clinics, community hospitals, general hospitals, and tertiary hospitals was 0.129%/0.000%, 0.088%/0.004%, 0.262%/0.009%, and 0.479%/0.030% respectively, and the corresponding incidence of bleeding/perforation after therapeutic colonoscopy was 0.258%/0.004%, 0.401%/0.007%, 0.408%/0.024%, and 0.731%/0.055%. CONCLUSION The incidences of complications associated with diagnostic and therapeutic EGD or colonoscopy tended to increase with the hospital volume in Korea. TRIAL REGISTRATION Clinical Research Information Service Identifier: KCT0001728.
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Affiliation(s)
- Yunho Jung
- Division of Gastroenterology, Department of Internal Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Jung-Wook Kim
- Division of Gastroenterology, Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea
| | - Jong Pil Im
- Department of Internal Medicine and Liver Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Yu Kyung Cho
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Tae Hee Lee
- Institute for Digestive Research, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
| | - Jae-Young Jang
- Division of Gastroenterology, Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea.
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Tseng CW, Hsieh YH, Lin CC, Koo M, Leung FW. Heat sink effect of underwater polypectomy in a porcine colon model. BMC Gastroenterol 2021; 21:406. [PMID: 34706664 PMCID: PMC8554837 DOI: 10.1186/s12876-021-01985-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 10/08/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Underwater polypectomy without the need for submucosal injection has been reported. A heat-sink effect by immersing the polyp in water was proposed but no such experiment has been performed to support the claim. We compared the temperature rise on the serosal side during polypectomy between air- and water-filled colon. METHOD Freshly harvested porcine colons were placed in a metal tray with cautery electrode pad attached to its bottom. An upper endoscope was used with a cap and a rubber band mounted to the distal end. A mucosal site was randomly selected and identified on its serosal surface with a marker while suction was applied. Suction was applied again and a ligation band was applied to create a polyp. A cautery snare grasped the artificial polyp just below the band. An assistant placed the tip of a thermometer at the marked site on the serosal surface to record the baseline temperature before cautery and the highest temperature during polypectomy. Seven polypectomies in air and underwater were performed. RESULTS Mean (standard deviation) baseline temperature were 23.3 (0.6) °C and 23.4 (0.6) °C in the air and water groups, respectively. The maximum rise in temperature during polypectomy was 6.1 (4.5) °C and 1.4 (1.0) °C in the air and water groups, respectively (P = 0.004). CONCLUSIONS The maximum temperature rise during polypectomy was significantly less when polypectomy was performed underwater, supporting the hypothesis that a heat-sink effect does exist during underwater polypectomy.
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Affiliation(s)
- Chih-Wei Tseng
- Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 2 Minsheng Road, Dalin, Chiayi, 62247, Taiwan.,School of Medicine, Buddhist Tzu Chi University, Hualien, Taiwan
| | - Yu-Hsi Hsieh
- Division of Gastroenterology, Department of Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, 2 Minsheng Road, Dalin, Chiayi, 62247, Taiwan. .,School of Medicine, Buddhist Tzu Chi University, Hualien, Taiwan.
| | - Chung-Chih Lin
- Department of Mechanical and Computer-Aided Engineering, National Formosa University, Yilan, Taiwan
| | - Malcolm Koo
- Graduate Institute of Long-Term Care, Tzu Chi University of Science and Technology, Hualien, Taiwan.,Dalla Lana School of Public Health, University of Toronto, Ontario, ON, Canada
| | - Felix W Leung
- Sepulveda Ambulatory Care Center, Veterans Affairs Greater Los Angeles Healthcare System, North Hill, CA, USA.,David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
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Jung Y. [Medical Dispute Related to Gastrointestinal Endoscopy Complications: Prevention and Management]. THE KOREAN JOURNAL OF GASTROENTEROLOGY 2019; 73:315-321. [PMID: 31234621 DOI: 10.4166/kjg.2019.73.6.315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 12/12/2022]
Abstract
Because gastrointestinal (GI) endoscopy examinations are being performed increasingly frequently, the rate of detection of cancer and of precancerous lesions has increased. Moreover, development of more advanced endoscopic technologies has expanded the indications for, and thus frequency of, therapeutic endoscopic procedures. However, the incidence of complications associated with diagnostic or therapeutic GI endoscopy has also increased. The complications associated with GI endoscopy can be ameliorated by endoscopic or conservative treatment, but caution is needed as some of the more serious complications, such as perforation, can lead to death. In this chapter, we review the possible complications of GI endoscopy and discuss methods for their prevention and treatment.
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Affiliation(s)
- Yunho Jung
- Division of Gastroenterology, Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
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Abstract
Colon perforations are difficult to resolve because they occur unexpectedly and infrequently. If the clinician is unprepared or lacks training in dealing with perforations, the clinical prognosis will be affected, which can lead to legal issues. We describe here the proper approach to the management of perforations, including deciding on endoscopic or surgical treatment, selection of endoscopic devices, endoscopic closure procedures, and general management of perforations that occur during diagnostic or therapeutic colonoscopy.
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Affiliation(s)
- Yunho Jung
- Division of Gastroenterology, Department of Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea
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Singh RR, Nussbaum JS, Kumta NA. Endoscopic management of perforations, leaks and fistulas. Transl Gastroenterol Hepatol 2018; 3:85. [PMID: 30505972 DOI: 10.21037/tgh.2018.10.09] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 10/19/2018] [Indexed: 12/14/2022] Open
Abstract
The endoscopic management armamentarium of gastrointestinal disruptions including perforations, leaks, and fistulas has slowly but steadily broadened in recent years. Previously limited to surgical or conservative medical management, innovations in advanced endoscopic techniques like natural orifice transluminal endoscopic surgery (NOTES) have paved the path towards development of endoscopic closure techniques. Early recognition of a gastrointestinal defect is the most important independent variable in determining successful endoscopic closure and patient outcome. Some devices including through the scope clips and stents have been well studied for other indications and have produced encouraging results in closure of gastrointestinal perforations, leaks and fistulas. Over the scope clips, endoscopic sutures, vacuum therapy, glue, and cardiac device occluders are other alternative techniques that can be employed for successful endoscopic closure.
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Affiliation(s)
- Ritu Raj Singh
- Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jeremy S Nussbaum
- Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Nikhil A Kumta
- Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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The role of surgery in the treatment of endoscopic complications. Best Pract Res Clin Gastroenterol 2016; 30:841-851. [PMID: 27931640 DOI: 10.1016/j.bpg.2016.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 09/05/2016] [Accepted: 10/02/2016] [Indexed: 01/31/2023]
Abstract
As the number, diversity, and complexity of endoscopic complications has increased, so too has the number, diversity, and complexity of operative interventions required to treat them. The most common complications of endoscopy in general are bleeding and perforation, but each endoscopic modality has specific nuances of these and other complications. Accordingly, this review considers the surgical complications of endoscopy by location within the gastrointestinal tract, as opposed to by complication types, since there are many complication types that are specific for only one or few locations, such as buried-bumper syndrome after percutaneous endoscopic gastrostomy and pancreatitis after endoscopic retrograde cholangiopancreatography, and since the management of a given complication, such as perforation, may be vastly different in one area than in another area, such as perforations of the esophagus versus the retroperitoneal duodenum versus the intraperitoneal duodenum. It is hoped that this review will provide guidance for gastroenterologists considering a particular procedure, either to assess the risks for surgical complications in preparation for patient counseling, or assist in assessing a patient who seems to be having a severe complication, or to learn what operation might be required to treat a given complication and how that operation might be performed. As with many operations, those for the treatment of endoscopic complications are typically performed only when less invasive, nonoperative strategies fail.
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Repici A, Pohl H. Revival of a sclerosing agent for prevention of postpolypectomy bleeding. Gastrointest Endosc 2015; 82:359-61. [PMID: 26183495 DOI: 10.1016/j.gie.2015.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Accepted: 05/01/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Alessandro Repici
- Digestive Endoscopy Unit, Humanitas Research Hospital, Milano, Italy
| | - Heiko Pohl
- Section of Gastroenterology, White River Junction VA Medical Center, White River Junction, Vermont, Geisel School of Medicine at Dartmouth, Hanover, New Hampshire
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