OTSC vs. Angiographic Embolization in Patients With Refractory Non-variceal Upper Gastrointestinal Bleeding

Official title

Endoscopic Application of Over-the-scope Clips (OTSC) vs. Angiographic Embolization in Patients With Refractory Non-variceal Upper Gastrointestinal Bleeding: a Multicenter Randomized Comparison

Overview

In the management of patients with acute upper non-variceal upper gastrointestinal bleeding, further bleeding is the most important adverse factor predictive of mortality. In the United Kingdom Audit on acute upper gastrointestinal bleeding, clinical evidence of further bleeding was reported in 13% of patients following the first endoscopy and 27% of them died. The use of OTSC has emerged as an alternative before angiographic embolization(TAE) which is often considered most definitive. We propose to define the algorithm in the management of patients with refractory bleeding from their peptic ulcers or other non variceal causes. We hypothesize that endoscopic use of OTSC compares favourably with TAE and both lead to similar outcomes. An equivalence of the two modalities may mean that endoscopic application of OTSC should be attempted before TAE as often we need to document further bleeds with endoscopy and a second treatment should be instituted at the same time.

Detailed description

The current standard of care in patients with refractory bleeding from their peptic ulcers and other non-variceal causes has not been defined. An International Consensus Group recommends a surgical consult when endoscopic treatment has failed and TAE should be considered as an alternative. The European guidelines recommend the use of either surgery or angiographic embolization. There has not been a fully published RCT that compares angiographic treatment to surgery in those with refractory bleeding. Several comparative series mostly retrospective and their meta-analyses suggest that outcomes following TAE would not be dissimilar to those after surgery. Common to these reports, TAE is associated with a higher rate of further bleeds. In our meta-analysis , the pooled rate of further bleeds after TAE was 51/178(32%) compared to that of 26/241 (14.9%) after surgery. A high rate of further bleeding can be understood because of a rich vascular supply to peptic ulcers especially those in the bulbar duodenum. A bulbar ulcer receives dual arterial supply from celiac and superior mesenteric arteries. Embolization to these arteries can therefore be challenging. In a population-based study from northern Europe that included 282 patients (97 TAE and 185 surgery), the overall hazard of deaths after TAE decreased by 1/3 when compared to surgery. Many argue that TAE is preferred over surgery in the algorithm of management.

The use of OTSC has emerged as an alternative before TAE which is often considered most definitive. A multicenter randomized controlled trial that compared OTSC and standard endoscopic treatment mostly through-the-scope clips in patients with refractory bleeding peptic ulcers; 66 patients were randomized and control of bleeding over 30 days was better with the use of OTSC (15.2% vs. 57.6%). A Mayo Clinic group reported OTSC treatment in 67 high risk lesions defined by those near an arterial complex (bulbar or angular/lesser curve ulceration) with an artery larger than 2 mm, deep excavated fibrotic ulcer with major stigmata and those that failed standard endoscopic therapy (through-the-scope clips and/or thermal device); 47 (70.1%) remained free of further bleeds at day 30 10.

Interventions

• Device The OTSC® System Set
  The endoscope was extracted and equipped with the OTSC system. OTSC system is deployed on the lesion with suction to target lesion
• Procedure angiographic embolization
  Transcatheter selective embolization to bleeding arteries

Primary outcome measures

• further bleeding [Time frame: within 30 days after randomization]

Secondary outcome measures (6)

• further interventions [Time frame: within 30 days after randomization]
• blood transfusion [Time frame: within 30 days after randomization]
• length of hospitalization [Time frame: within 30 days after randomization]
• length of ICU stay [Time frame: within 30 days after randomization]
• mortality related to bleeding [Time frame: within 30 days after randomization]
• all cause mortality [Time frame: within 30 days after randomization]

Eligibility criteria

Inclusion criteria

• 1\. Patients presented with overt signs of acute upper gastrointestinal bleeding (hematemesis, melena and/or hypotension) 2. documented bleeding lesion at endoscopy (ulcer, dieulafoy's lesion and others), further bleeds (persistent or recurrent) after endoscopic hemostasis (thermal or hemoclips) as defined by an International Consensus Group

Exclusion criteria

• without a full informed consent from the patient or his next of kin
• Age <18 years
• Pregnant
• Lactating women
• patients with known allergy to intravenous contrast

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation

Randomized

Model

Parallel assignment

Masking

Single blind

Primary purpose

Treatment

Study locations

China · 3 centers

• Beijing friendship Hospital — Beijing
• the First Affiliated Hospital of Nanchang University — Nanchang
• Huaxi Hospital of Sichuan University — Chengdu

Hong Kong · 1 center

• Endoscopy Centre, Prince of Wales Hospital — Hong Kong

Thailand · 1 center

• King Chulalongkorn Memorial Hospital — Bangkok

Publications

• Barkun AN, Almadi M, Kuipers EJ, Laine L, Sung J, Tse F, Leontiadis GI, Abraham NS, Calvet X, Chan FKL, Douketis J, Enns R, Gralnek IM, Jairath V, Jensen D, Lau J, Lip GYH, Loffroy R, Maluf-Filho F, Meltzer AC, Reddy N, Saltzman JR, Marshall JK, Bardou M. Management of Nonvariceal Upper Gastrointestinal Bleeding: Guideline Recommendations From the International Consensus Group. Ann Intern Med. 201 PMID 31634917
• Gralnek IM, Dumonceau JM, Kuipers EJ, Lanas A, Sanders DS, Kurien M, Rotondano G, Hucl T, Dinis-Ribeiro M, Marmo R, Racz I, Arezzo A, Hoffmann RT, Lesur G, de Franchis R, Aabakken L, Veitch A, Radaelli F, Salgueiro P, Cardoso R, Maia L, Zullo A, Cipolletta L, Hassan C. Diagnosis and management of nonvariceal upper gastrointestinal hemorrhage: European Society of Gastrointestinal Endoscopy (ESGE) G PMID 26417980
• Kyaw M, Tse Y, Ang D, Ang TL, Lau J. Embolization versus surgery for peptic ulcer bleeding after failed endoscopic hemostasis: a meta-analysis. Endosc Int Open. 2014 Mar;2(1):E6-E14. doi: 10.1055/s-0034-1365235. Epub 2014 Mar 7. PMID 26134614
• Beggs AD, Dilworth MP, Powell SL, Atherton H, Griffiths EA. A systematic review of transarterial embolization versus emergency surgery in treatment of major nonvariceal upper gastrointestinal bleeding. Clin Exp Gastroenterol. 2014 Apr 16;7:93-104. doi: 10.2147/CEG.S56725. eCollection 2014. PMID 24790465
• Tarasconi A, Baiocchi GL, Pattonieri V, Perrone G, Abongwa HK, Molfino S, Portolani N, Sartelli M, Di Saverio S, Heyer A, Ansaloni L, Coccolini F, Catena F. Transcatheter arterial embolization versus surgery for refractory non-variceal upper gastrointestinal bleeding: a meta-analysis. World J Emerg Surg. 2019 Feb 1;14:3. doi: 10.1186/s13017-019-0223-8. eCollection 2019. PMID 30733822
• Sverden E, Mattsson F, Lindstrom D, Sonden A, Lu Y, Lagergren J. Transcatheter Arterial Embolization Compared With Surgery for Uncontrolled Peptic Ulcer Bleeding: A Population-based Cohort Study. Ann Surg. 2019 Feb;269(2):304-309. doi: 10.1097/SLA.0000000000002565. PMID 29064894
• Schmidt A, Golder S, Goetz M, Meining A, Lau J, von Delius S, Escher M, Hoffmann A, Wiest R, Messmann H, Kratt T, Walter B, Bettinger D, Caca K. Over-the-Scope Clips Are More Effective Than Standard Endoscopic Therapy for Patients With Recurrent Bleeding of Peptic Ulcers. Gastroenterology. 2018 Sep;155(3):674-686.e6. doi: 10.1053/j.gastro.2018.05.037. Epub 2018 May 24. PMID 29803838

Identifiers

NCT: NCT04902248 · OTSCTAE

Primary sources (government registries)

• ClinicalTrials.gov (US NIH)

View this study on ClinicalTrials.gov ↗