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Wang CY, Chang WC, Huang HH, Chang WK, Shih YL, Hsieh TY, Lin HH. Safety Issues in Magnetic Resonance Imaging Scan with Retention of Olympus Long Clips in the Gastrointestinal Tract. Curr Med Imaging 2021; 17:1243-1247. [PMID: 34170809 DOI: 10.2174/1573405617666210624125335] [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: 10/19/2020] [Revised: 12/29/2020] [Accepted: 02/17/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Not all endoscopic clips are compatible with magnetic resonance imaging (MRI). The aim of this study is to investigate the safety of MRI-incompatible endoscopic clips in patients undergoing MRI scans. METHODS We retrospectively reviewed the medical records of patients who had received endoscopic clip placement of Olympus Long Clip MRI-incompatible clips and then had undergone MRI scans within two weeks in our hospital between 2014 and 2019. RESULTS A total of 44,292 patients had undergone an MRI examination at our hospital. Only 15 patients had MRI scans within two weeks after the endoscopic clip placement. Their median age was 65.5 years, and 12 of the 15 patients were men. At the time of the clip placement and MRI scan, four patients were taking anti-coagulation or anti-platelet agents. The indication for endoscopic clip placement of the 15 patients was mucosal/submucosal defect or hemorrhage and colonic perforation. Endoscopic clips were placed in the colon of 14 patients and in the stomach of only one patient for gastric hemorrhage. One patient experienced clip migration and three displayed artifacts in abdominal images. No patient complications of mortality, hemorrhage, or organ perforation occurred. CONCLUSION No serious adverse event occurred during MRI scans of patients with MRI-incompatible clips in this study, suggesting that MRI-incompatible clips may be safe to use in MRI scans. However, this does not guarantee the safety of the Long Clip for MRI scans, as further tests are needed to verify that this clip is safe for use during MRI.
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Affiliation(s)
- Cheng-Yi Wang
- Department of Internal Medicine, Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan
| | - Wei-Chou Chang
- Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsin-Hung Huang
- Division of Gastroenterology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Wei-Kuo Chang
- Division of Gastroenterology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Yu-Lueng Shih
- Division of Gastroenterology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Tsai-Yuan Hsieh
- Division of Gastroenterology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Hsuan-Hwai Lin
- Division of Gastroenterology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
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Shin DY, Park S, Kim A, Kim ES, Jeon HH. Compatibility of endoclips in the gastrointestinal tract with magnetic resonance imaging. Sci Rep 2020; 10:16537. [PMID: 33024206 PMCID: PMC7539000 DOI: 10.1038/s41598-020-73726-5] [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: 03/06/2020] [Accepted: 09/21/2020] [Indexed: 11/09/2022] Open
Abstract
There are no clear guidelines on the compatibility between endoclips that remain in the gastrointestinal (GI) tract and magnetic resonance imaging (MRI). The purpose of this study was to investigate the effect of 3T (T) MRI on endoclips placed in excised pig tissues. Two types of endoclips were assessed: Olympus EZ (HX-610-135L) and QuickClip Pro (HZ-202LR). We assessed tissue damage or perforation and detachment of endoclips under 3T MRI magnetic field. We also evaluated the magnitude of force required to detach the endoclips from the porcine tissue. We measured the magnetic force acting on the Olympus EZ clips. QuickClip Pro clips were used as a control in this study. There was no tissue damage and no detachment of the endoclips (Olympus EZ and QuickClip Pro) during 3T MRI. The force required to detach the Olympus EZ clips ranged from 0.9 to 3.0 N. The translational magnetic force acting on the endoclips was 3.18 × 10-3 N. Ex vivo experiments showed that the magnetic field generated by 3 MRI did not cause tissue damage or perforation and did not detach the endoclips. Olympus EZ clips and QuickClip Pro clips in the GI tract appear to be safe during 3T MRI.
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Affiliation(s)
- Dong Yeol Shin
- Division of Gastroenterology, Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, 100 Ilsan-ro Ilsan-donggu, Goyang-si, Goyang, 10444, Korea
| | - Sumi Park
- Department of Radiology, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Ain Kim
- Department of Human Biology, University of Toronto, Toronto, ON, Canada
| | - Eung-Sam Kim
- Department of Biological Sciences and Research Center of Ecomimetics, Chonnam National University, Gwangju, Korea.
| | - Han Ho Jeon
- Division of Gastroenterology, Department of Internal Medicine, National Health Insurance Service Ilsan Hospital, 100 Ilsan-ro Ilsan-donggu, Goyang-si, Goyang, 10444, Korea.
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Fukagawa K, Ono S, Koike K. A Case of an embedded clip in the gastric wall after shielding a post-endoscopic submucosal dissection ulcer with polyglycolic acid sheet. Dig Endosc 2018; 30:678. [PMID: 29845663 DOI: 10.1111/den.13196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kazushi Fukagawa
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Satoshi Ono
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.,Department of Gastroenterology, Chiba-Nishi General Hospital, Chiba, Japan
| | - Kazuhiko Koike
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
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Accorsi F, Lalonde A, Leswick DA. Endoclip Magnetic Resonance Imaging Screening: A Local Practice Review. Can Assoc Radiol J 2018; 69:162-168. [PMID: 29706253 DOI: 10.1016/j.carj.2017.12.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 09/17/2017] [Accepted: 12/07/2017] [Indexed: 11/30/2022] Open
Abstract
PURPOSE Not all endoscopically placed clips (endoclips) are magnetic resonance imaging (MRI) compatible. At many institutions, endoclip screening is part of the pre-MRI screening process. Our objective is to determine the contribution of each step of this endoclip screening protocol in determining a patient's endoclip status at our institution. METHODS A retrospective review of patients' endoscopic histories on general MRI screening forms for patients scanned during a 40-day period was performed to assess the percentage of patients that require endoclip screening at our institution. Following this, a prospective evaluation of 614 patients' endoclip screening determined the percentage of these patients ultimately exposed to each step in the protocol (exposure), and the percentage of patients whose endoclip status was determined with reasonable certainty by each step (determination). RESULTS Exposure and determination values for each step were calculated as follows (exposure, determination): verbal interview (100%, 86%), review of past available imaging (14%, 36%), review of endoscopy report (9%, 57%), and new abdominal radiograph (4%, 96%), or CT (0.2%, 100%) for evaluation of potential endoclips. Only 1 patient did not receive MRI because of screening (in situ gastrointestinal endoclip identified). CONCLUSIONS Verbal interview is invaluable to endoclip screening, clearing 86% of patients with minimal monetary and time investment. Conversely, the limited availability of endoscopy reports and relevant past imaging somewhat restricts the determination rates of these. New imaging (radiograph or computed tomography) is required <5% of the time, and although costly and associated with patient irradiation, has excellent determination rates (above 96%) when needed.
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Affiliation(s)
- Fabio Accorsi
- College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
| | - Alain Lalonde
- Department of Medical Imaging, Saskatoon Health Region and University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - David A Leswick
- College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada; Department of Medical Imaging, Saskatoon Health Region and University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Evaluating long-term attachment of a novel endoclip in porcine stomachs: a prospective study of initial deployment success and clip retention rates at different regions of the stomachs. Surg Endosc 2015; 30:1100-6. [DOI: 10.1007/s00464-015-4305-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/26/2015] [Indexed: 12/11/2022]
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Palmer R, Braden B. New and emerging endoscopic haemostasis techniques. Frontline Gastroenterol 2015; 6:147-152. [PMID: 28839802 PMCID: PMC5369562 DOI: 10.1136/flgastro-2014-100540] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/02/2015] [Accepted: 01/05/2015] [Indexed: 02/04/2023] Open
Abstract
Endoscopic treatment has been accepted as first-line treatment of upper gastrointestinal bleeding, both for variceal as well as for non-variceal haemorrhage. Dual modality treatment including injection therapy with mechanical or thermal haemostatic techniques has shown superior outcome compared with injection monotherapy in non-variceal bleeding. During recent years, new endoscopic devices have been developed and existing endoscopic techniques have been adapted to facilitate primary control of bleeding or achieve haemostasis in refractory haemorrhage. For mechanical haemostasis, larger, rotatable and repositionable clips have been developed; multiple-preloaded clips are also available now. Over the scope clips allow to ligate larger vessels and can close ulcer defects up to 20 mm. Topical, easily applied substances withdraw fluid from the blood and thereby initiate blood clotting. This can be helpful in diffuse oozing bleeding, for example, from tumour or hypertensive gastropathy and has also shown promising results in variceal and arterial bleeding as bridging before definitive treatment is available. Radiofrequency ablation and multiband ligation have emerged as new tools in the endoscopic management of gastric antral vascular ectasia. In acute refractory variceal bleeding, a covered and removable oesophagus stent can provide tamponade and gain time for transport to an interventional endoscopic centre or for radiological intervention such as TIPS.
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Affiliation(s)
- Rebecca Palmer
- Translational Gastroenterology Unit, Oxford University Hospitals, Oxford, UK
| | - Barbara Braden
- Translational Gastroenterology Unit, Oxford University Hospitals, Oxford, UK
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Saxena P, Ji-Shin E, Haito-Chavez Y, Valeshabad AK, Akshintala V, Aguila G, Kumbhari V, Ruben DS, Lennon AM, Singh V, Canto M, Kalloo A, Khashab MA. Which clip? A prospective comparative study of retention rates of endoscopic clips on normal mucosa and ulcers in a porcine model. Saudi J Gastroenterol 2014; 20:360-5. [PMID: 25434317 PMCID: PMC4271011 DOI: 10.4103/1319-3767.145328] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND/AIM There are currently no data on the relative retention rates of the Instinct clip, Resolution clip, and QuickClip2Long. Also, it is unknown whether retention rate differs when clips are applied to ulcerated rather than normal mucosa. The aim of this study is to compare the retention rates of three commonly used endoscopic clips. MATERIALS AND METHODS Six pigs underwent upper endoscopy with placement of one of each of the three types of clips on normal mucosa in the gastric body. Three mucosal resections were also performed to create "ulcers." Each ulcer was closed with placement of one of the three different clips. Repeat endoscopy was performed weekly for up to 4 weeks. RESULTS Only the Instinct and Resolution clips remained attached for the duration of the study (4 weeks). At each time point, a greater proportion of Instinct clips were retained on normal mucosa, followed by Resolution clips. QuickClip2Long had the lowest retention rate on normal mucosa. Similar retention rates of Instinct clips and Resolution clips were seen on simulated ulcers, although both were superior to QuickClip2Long. However, the difference did not reach statistical significance. All QuickClip2Long clips were dislodged at 4 weeks in both the groups. CONCLUSIONS The Resolution and Instinct clips have comparable retention rates and both appeared to be better than the QuickClip2Long on normal mucosa-simulated ulcers; however this did not reach statistical significance. Both the Resolution clip and the Instinct clip may be preferred in clinical situations when long-term clip attachment is required, including marking of tumors for radiotherapy and anchoring feeding tubes or stents. Either of the currently available clips may be suitable for closure of iatrogenic mucosal defects without features of chronicity.
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Affiliation(s)
- Payal Saxena
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Eun Ji-Shin
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Yamile Haito-Chavez
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Ali K. Valeshabad
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Venkata Akshintala
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Gerard Aguila
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Vivek Kumbhari
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Dawn S. Ruben
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Anne-Marie Lennon
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Vikesh Singh
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Marcia Canto
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Anthony Kalloo
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Mouen A. Khashab
- Department of Medicine and Division of Gastroenterology and Hepatology, The Johns Hopkins Medical Institutions, Baltimore, MD, USA,Address for correspondence: Asst. Prof. Mouen A. Khashab, Director of Therapeutic Endoscopy, Johns Hopkins Hospital, 1800 Orleans St, Suite 7125B, Baltimore, MD 21287, USA. E-mail:
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Abstract
Esophageal leak is a life-threatening problem that can result from spontaneous rupture of the esophagus, cancer, anastomotic dehiscence after surgery, or as a complication of endoscopy. During the last decade, developments in the minimally invasive endoluminal approach to the management of esophageal leaks include utilization of endoscopy not only for diagnosis but also for closure of leaks with clips or sutures, bypass of the leaks with stents, and/or endoluminal drainage of mediastinal infection. The aim of this review is to summarize recent advances and the principles of endoscopic management of acute esophageal perforations.
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Affiliation(s)
- Rene Gomez-Esquivel
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 1466, Houston, TX 77030, USA
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Daram SR, Tang SJ, Wu R, To SDF. Benchtop testing and comparisons among three types of through-the-scope endoscopic clipping devices. Surg Endosc 2013; 27:1521-9. [PMID: 23292554 DOI: 10.1007/s00464-012-2679-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 10/22/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND Through-the-scope (TTS) endoscopic clipping devices are widely used. No benchtop testing or direct comparisons of these endoclips have been performed to show their rotational ability and inherent mechanical strengths during closure and after deployment. This study aimed to provide benchtop data that can be used to guide clinical applications and to promote future device research and development. METHODS Benchtop testing and comparisons were performed for three groups of TTS clips: QuickClip2 long, resolution, and instinct clips. The main outcome measurements were device-in-endoscope retroflection angles (DIERA), opening strength, "snapping" force of acute clip closure, and neoprene pulling strength. RESULTS The achievable gastroscope DIERA was 10° for QuickClip2, 3° for the resolution clip, and 10° for the instinct clip. The QuickClip and the Instinct clip rotated almost equally well under all endoscope configurations, including endoscopic retrograde cholangiopancreatography (ERCP). With or without a sheath, the resolution clip lacked the ability to rotate. During clip opening force testing (the amount of force required to force open the jaws of a deployed clip by 3.2 mm; 3.2 mm was chosen due to the standard dimension of the gauge used for the measurement), the Instinct clips were the strongest. For the Instinct clips, an opening force of 404 ± 124 g was needed to open the closed clip, and an additional 386 ± 133 g was required to open the clip jaws to 3.2 mm. In terms of snapping force during acute closure and neoprene pulling strength, the instinct and resolution clips performed almost equally. The limitations of the study were the benchtop testing and the finite sample size for closing and pulling strength comparisons. CONCLUSIONS The QuickClip2 and the Instinct clip rotate equally well under different endoscope configurations. The resolution clips lack rotational ability. The instinct clips are stronger mechanically than the other two TTS clips. Stronger clips are perhaps associated with higher therapeutic efficacy and retention rates.
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Affiliation(s)
- Sumanth R Daram
- Division of Digestive Diseases, Department of Medicine, University of Mississippi Medical Center, 2500 North State Street, Jackson, MS 39216, USA
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Abstract
Upper gastrointestinal (UGI) bleeding secondary to ulcer disease occurs commonly and results in significant patient morbidity and medical expense. After initial resuscitation, carefully performed endoscopy provides an accurate diagnosis of the source of the UGI hemorrhage and can reliably identify those high-risk subgroups that may benefit most from endoscopic hemostasis. Effective endoscopic hemostasis of ulcer bleeding can significantly improve outcomes by reducing rebleeding, transfusion requirement, and need for surgery, as well as reduce the cost of medical care. This article discusses the important aspects of the diagnosis and treatment of bleeding from ulcers, with a focus on endoscopic therapy.
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Affiliation(s)
- Thomas O G Kovacs
- CURE Digestive Diseases Research Center, David Geffen School of Medicine at UCLA, Ronald Reagan Medical Center, VA Greater Los Angeles Healthcare System, CA 90073-1003, USA.
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The Effects of Magnetic Resonance Imaging on Surgical Staples: An Experimental Analysis. ACTA ACUST UNITED AC 2011; 70:1279-81. [DOI: 10.1097/ta.0b013e3181de3855] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Raju GS. Magnetic resonance imaging incompatibility of clips is an issue. Gastrointest Endosc 2010; 72:905-6. [PMID: 20883874 DOI: 10.1016/j.gie.2010.01.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2010] [Accepted: 01/11/2010] [Indexed: 01/13/2023]
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Abstract
Endoscopy is the primary diagnostic and therapeutic tool for upper gastrointestinal bleeding (UGIB). The performance of endoscopic therapy depends on findings of stigmata of recent hemorrhage (SRH). For peptic ulcer disease-the most common etiology of UGIB-endoscopic therapy is indicated for findings of major SRH, such as active bleeding, oozing, or the presence of a nonbleeding visible vessel, but not indicated for minor SRH, such as a pigmented flat spot or a simple ulcer with a homogeneous clean base. Endoscopic therapies include injection, ablation, and mechanical therapy. Monotherapy reduces the risk of rebleeding in patients with peptic ulcer disease with major SRH to about 20%. Combination therapy, especially injection followed by either ablation or mechanical therapy, is generally recommended to further reduce the risk of rebleeding to about 10%. Endoscopic dual hemostasis by an experienced endoscopist reduces the risk of rebleeding, the need for surgery, the number of blood transfusions required, and the length of hospital stay. This Review article comprehensively analyzes the principles, indications, instrumentation, techniques, and efficacy of endoscopic hemostasis.
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Affiliation(s)
- Mitchell S Cappell
- Division of Gastroenterology, MOB 233, William Beaumont Hospital, 3535 West Thirteen Mile Road, Royal Oak, MI 48073, USA.
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