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LETTER TO EDITOR
Ahead of print publication  

EUS-guided therapy of nonvariceal refractory bleeding: A prospective observational study


1 Department of Gastroenterology, Endoscopy Unit, Hospital Universitario de Navarra, Navarra, Spain
2 Department of Gastroenterology, Complejo Hospitalario Insular-Materno Infantil de Gran Canaria, Las Palmas, Spain

Date of Submission14-Jul-2021
Date of Acceptance01-Mar-2022
Date of Web Publication08-Jun-2022

Correspondence Address:
Guillermo Pérez-Aguado,
Department of Gastroenterology, Complejo Hospitalario Insular-Materno Infantil, Avenida Maritima del Sur, s/n- 35016 - Las Palmas de Gran Canaria, Las Palmas
Spain
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/EUS-D-21-00169



How to cite this URL:
Uribarri-González L, Pérez-Aguado G, Arrubla Gamboa A, Vila JJ. EUS-guided therapy of nonvariceal refractory bleeding: A prospective observational study. Endosc Ultrasound [Epub ahead of print] [cited 2022 Jun 27]. Available from: http://www.eusjournal.com/preprintarticle.asp?id=346862

Dear Editor,

EUS has been proposed as an effective therapeutic method for refractory nonvariceal gastrointestinal bleeding (NVGB) with successful outcomes in the treatment of dieulafoy (DL), ulcers, gastrointestinal stromal tumors, and pseudoaneurysms.[1],[2],[3] Doppler flow can show the blood vessels responsible for bleeding[1],[3] and have associated a low risk of re-bleeding with disappearance of its flow after injection of the sclerosing agent. However, there is no standardized method to ensure the effectiveness of the intervention.[1],[3] Nowadays, EUS-guided treatment for NVGB is not standardized and has only been performed in expert centers.

We performed a prospective, observational single-center study to evaluate the usefulness of EUS-guided treatment in patients with NVGB refractory to conventional endoscopic therapy. Patients who had an NVGB refractory to two standard endoscopic therapies and accepted to undergo EUS-guided treatment between January 2010 and December 2020 were included. All procedures were performed by an experienced endoscopist with a linear echoendoscope. A diagnostic EUS with Doppler was performed to delineate the relevant vascular anatomy. Fine needle puncture with a standard 22-gauge needle targeting the vessel or lesion responsible for the bleeding was performed. Polidocanol or 99% ethanol was used for injection under EUS guidance. Refractory bleeding was defined as those episodes that were not controlled after two conventional endoscopies. Therapeutic success was defined as the absence of re-bleeding after EUS treatment.

Fourteen patients with an NVGB refractory to standard endoscopic therapy were included: 9 with DL and 5 with bleeding submucosal tumors refractory to standard therapy. We obtained a global therapeutic success of 78% without adverse effects. One of the submucosal tumors required an endoscopic resection and one DL was not identified. Two patients suffered recurrence of bleeding after a mean time of 15.3 ± 8.3 days. The mean follow-up time of the series was 1515.4 ± 1311.2 days. [Figure 1] shows the flow diagram of patients and etiology of NVGB.
Figure 1: Flowchart of patients evaluated for the study

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This is a prospective study reflecting daily clinical practice. EUS has been described as a useful tool both for diagnosing the etiology of gastrointestinal bleeding of obscure or recurrent origin and for localizing the vessel responsible for bleeding for interventional vascular radiology-directed hemostatic therapy.[4] Our main limitations lie in that it is a single-center study including a low number of patients, so we also accept that therapeutic efficacy is strongly related to the available local experience, which may bias the results. Still, larger studies, possibly including randomized controlled trials, are needed to confirm these results.

In conclusion, EUS-guided therapy should be considered in NVGB refractory to endoscopic treatment before surgical therapy.[5] This has been described before; however, to our knowledge, there are no prospective studies available nowadays. In this setting, EUS allowed accurate identification of the source of bleeding and precise delivery of the thrombotic agent into the target vessel or lesion origin of bleeding. This treatment seems useful, safe, and less invasive than surgery, free of adverse events with a therapeutic success rate of 78%.

Financial support and sponsorship

Nil.

Conflicts of interest

Juan J. Vila is an Editorial Board Member of the journal. This article was subject to the journal's standard procedures, with peer review handled independently of this editor and his research group.



 
  References Top

1.
De Angelis CG, Cortegoso Valdivia P, Rizza S, et al. Endoscopic ultrasound-guided treatments for non-variceal upper GI bleeding: A review of the literature. J Clin Med 2020;9:866.  Back to cited text no. 1
    
2.
Jensen DM, Kovacs TO, Ohning GV, et al. Doppler endoscopic probe monitoring of blood flow improves risk stratification and outcomes of patients with severe nonvariceal upper gastrointestinal hemorrhage. Gastroenterology 2017;152:1310-8.e1.  Back to cited text no. 2
    
3.
Gonzalez JM, Giacino C, Pioche M, et al. Endoscopic ultrasound-guided vascular therapy: Is it safe and effective? Endoscopy 2012;44:539-42.  Back to cited text no. 3
    
4.
Brito M, Nunes G, Pinto Marques P, et al. A unique case of recurrent upper gastrointestinal bleeding caused by two metachronous Dieulafoy's lesions: The role of EUS evaluation. GE Port J Gastroenterol 2021;28:193-7.  Back to cited text no. 4
    
5.
Dulic-Lakovic E, Dulic M, Hubner D, et al. Bleeding Dieulafoy lesions of the small bowel: A systematic study on the epidemiology and efficacy of enteroscopic treatment. Gastrointest Endosc 2011;74:573-80.  Back to cited text no. 5
    


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