Publications by authors named "Juan A Gonzalez-Martin"

Background And Aims: over-the-scope-clips (OTSC®) have been proposed as a rescue treatment for bleeding peptic ulcers. However, their effectiveness has not been evaluated in Spain.

Methods: this retrospective and single-center study (January 2018-December 2021) assessed the technical success, clinical success and safety of the device within 30 days.

View Article and Find Full Text PDF

The performance of an endoscopic procedure involves introducing an endoscope through the mouth or the anus, which may potentially lead to lethal infection. The risk increases when complex and difficult-to-clean scopes are used, as in the case of duodenoscopes. Side-viewing duodenoscopes are complex in design, with the camera and working channel exit located on one side of the endoscope's distal end, and with an elevator nail also located at this point for catheter redirection.

View Article and Find Full Text PDF

Chronic intestinal pseudo-obstruction (CIPO) is characterized by symptoms and signs of bowel obstruction in the absence of an anatomical cause. Almost 50 % of cases are secondary to systemic diseases of neurological, paraneoplastic, autoimmune, metabolic, or infectious origin.

View Article and Find Full Text PDF

Endoscopic ultrasound (EUS)-guided drainage has become first-line treatment for pancreatic fluid collections (PFC). The aim of this study was to compare the effectiveness and safety of biliary fully-covered self-expandable metal stents (BFCSEMS) and lumen-apposing metal stents with electrocautery (EC-LAMS). From April 2008 to March 2017, consecutive patients with symptomatic PFC drained under EUS-guidance with metal stents were included.

View Article and Find Full Text PDF

Background: Population aging and comorbidity are leading to an increase in patients unfit for cholecystectomy.

Aims: To evaluate whether endoscopic biliary sphincterotomy after a first episode of acute gallstone pancreatitis reduces the risk of pancreatitis recurrence and gallstone-related events in non-surgical candidates.

Methods: Retrospective study of patients admitted for a first episode of acute gallstone pancreatitis rejected for cholecystectomy between 2013-2018.

View Article and Find Full Text PDF

Introduction: Endoscopic papillary large balloon dilatation (EPLBD) is an alternative for the treatment of common bile duct (CBD) stones. Existing evidence of factors associated with its outcomes is contradictory.

Objective: To identify predictors (including the experience of an endoscopist) of success and adverse events in EPLBD.

View Article and Find Full Text PDF

Endoscopic treatment of pancreatic ductal malformations causing recurrent acute pancreatitis, such as pancreas divisum or ansa pancreatica, is mainly based on the sphincterotomy of the minor papilla. However, the technical complexity of conventional endoscopic retrograde cholangiopancreatography (ERCP) is increased in patients presenting anatomical variants like these and it may be unsuccessful. We report the case of a pancreas divisum combined with ansa pancreatica and describe the cannulation and sphincterotomy of the minor papilla using an ultrasound-assisted Rendez-Vous technique.

View Article and Find Full Text PDF

Background And Aims: Initial reports suggest that fully covered self-expandable metal stents (FCSEMSs) may be better suited for drainage of dense pancreatic fluid collections (PFCs), such as walled-off pancreatic necrosis. The primary aim was to analyze the effectiveness and safety of FCSEMSs for drainage of different types of PFCs in a large cohort. The secondary aim was to investigate which type of FCSEMS is superior.

View Article and Find Full Text PDF

Background: EUS-guided cholangiopancreatography (ESCP) allows transmural access to biliopancreatic ducts when ERCP fails. Data regarding technical details, safety, and outcomes of ESCP are still unknown.

Objective: To evaluate outcomes of ESCP in community and referral centers at the initial development phase of this procedure, to identify the ESCP stages with higher risk of failure, and to evaluate the influence on outcomes of factors related to the endoscopist.

View Article and Find Full Text PDF

Background And Aims: ERCP during pregnancy is always challenging for the entire team performing the endoscopic intervention. In this study techniques and different interventional aspects used at several centres about the clinical experience on ERCP in pregnant women are analyzed.

Patients And Methods: the practice on ERCP in pregnant women in six centres during a period of ten years is reported.

View Article and Find Full Text PDF

Background And Objective: the prevalence of gastric polyps in esophagogastroduodenoscopies (EGDs) ranges between 0.33 and 6.35%.

View Article and Find Full Text PDF

Ruidera Pools Natural Park, Spain, constitutes one of the most representative systems of carbonate precipitation in Europe. The prokaryotic community of a dry modern stromatolite recovered from the park has been analyzed by molecular techniques that included denaturing gradient gel electrophoresis (DGGE) and 16S rRNA gene clone library analysis, together with microscopic observations from the sample and cultures. Ribosomal RNA was directly extracted to study the putatively active part of the microbial community present in the sample.

View Article and Find Full Text PDF

The applications of clips in current therapeutics are increasingly numerous. Endoscopic hemoclipping for acute nonvariceal bleeding is a highly effective and safe modality for hemostasis with initial hemostatic rates of between 85 and 98% and a rebleeding rate of approximately 5-10% both in patients with peptic ulcer bleeding and signs of endoscopic risk (Forrest Ia-IIb) and in bleeding secondary to submucosal lesions, diverticular bleeding, Mallory-Weiss tear, bleeding Dieulafoy's lesions, and postpolypectomy bleeding. In addition to the effectiveness of this technique as a hemostatic mechanism, many publications have demonstrated the utility of these clips to close perforations and fistulas, to serve as a radiopaque marker and as a tool to fix accessories (feeding tubes or prostheses).

View Article and Find Full Text PDF

Multiple lymphomatous polyposis is a rare type of non Hodgkin lymphoma that has aggressive biological behavior, early systemic dissemination and poor prognosis. In most cases it is considered to be a gastrointestinal manifestation of mantle cell nodal lymphoma. We describe a case of a 55 year old man, with favorable outcome after chemotherapy.

View Article and Find Full Text PDF

Bouveret's syndrome is a rare type of gallstone ileus in which a gallstone enters the intestinal tract via a cholecystoenteric fistula and is lodged in the duodenum or the stomach. Since the first description by León Bouveret in 1896, fewer than 200 cases have been described in the worldwide literature. Mortality is high, at 25%, but may be related to the advanced age of the typical patient and comorbidities, as well as diagnostic delay.

View Article and Find Full Text PDF