Publications by authors named "Barham K A Dayyeh"

Background: Obesity is a significant global health issue. Metabolic and bariatric surgery (MBS) is the gold standard in the treatment of obesity due to its proven effectiveness and safety in the short and long term. However, MBS is not suitable for all patients.

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Purpose: Endoscopic sleeve gastroplasty (ESG) is a minimally invasive day procedure that the MERIT randomized controlled trial (RCT) has demonstrated to be an effective and safe method of weight loss versus lifestyle modification alone. We sought to evaluate the cost-effectiveness of ESG from the perspective of a US commercial payer in a cohort of adults with class II and class I obesity with diabetes based on this RCT.

Materials: We used a Markov modelling approach with BMI group health states and an absorbing death state.

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Background: Endoscopic sleeve gastroplasty (ESG) is a safe and effective obesity treatment. The individualized metabolic score (IMS) is a validated score that uses preoperative variables predicting T2D remission (DR) in bariatric surgery.

Objectives: We evaluated the applicability of using the IMS score to predict DR in patients after ESG.

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Background: Endoscopic sleeve gastroplasty (ESG) is an innovative, minimally invasive bariatric procedure with an excellent safety and efficacy profile in adults with obesity. The purpose of the procedure is to shorten and tubularize the stomach along its greater curvature. Nevertheless, there are some heterogeneities in the approach to ESG, which will be important to address as the procedure sees increasingly widespread clinical adoption.

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Background: Type-2 diabetes mellitus (T2DM) results in detrimental vascular complications including both microvascular and macrovascular diseases. Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG) are effective weight-loss therapies that enhance T2DM remission. However, limited data are present regarding the association between diabetes-associated diseases before RYGB and SG with T2DM remission.

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Background: Post-operative pancreatic fluid collections (POPFCs) can be drained using percutaneous or endoscopic approaches. The primary aim of this study was to compare rates of clinical success between endoscopic ultrasound-guided drainage (EUSD) with percutaneous drainage (PTD) in the management of symptomatic POPFCs after distal pancreatectomy. Secondary outcomes included technical success, total number of interventions, time to resolution, rates of adverse events (AEs), and POPFC recurrence.

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Introduction: Type 2 diabetes mellitus (T2DM) is a common comorbidity associated with obesity, particularly in patients with body mass index (BMI) ≥ 50 kg/m. We aim to study real-world T2DM long-term remission in patients with BMI ≥ 50 kg/m following Roux-En-Y gastric bypass (RYGB) or sleeve gastrectomy (SG).

Methods: This was a retrospective study of the electronic medical records of all patients with BMI ≥ 50 kg/m, T2DM, and have undergone RYGB or SG at three tertiary referral centers in the United States.

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Article Synopsis
  • Marginal ulcer (MU) is a frequent complication after Roux-en-Y gastric bypass surgery, affecting up to 25% of patients, but the risk factors associated with MU have shown inconsistent findings in previous studies.
  • A meta-analysis evaluated 14 studies involving over 344,000 patients to identify significant predictors of MU, finding that Helicobacter pylori infection, smoking, and diabetes mellitus significantly increased the risk, while other factors like age and body mass index did not.
  • The study concludes that addressing these predictors, especially through smoking cessation and treating HP infections, can help reduce the risk of MU and improve surgical outcomes for RYGB patients.
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Article Synopsis
  • The study surveyed international experts to improve prevention strategies for gastroesophageal reflux disease (GERD) and marginal ulcers (MU) following metabolic and bariatric surgery (MBS).
  • Over 90% of experts recommend postoperative acid suppression, with a significant majority also advocating for lifetime proton pump inhibitors for certain patients and routine Helicobacter pylori eradication prior to surgery.
  • The findings highlight a general agreement on key interventions but reveal variability in follow-up practices and management strategies, indicating a need for more research and standardized guidelines.
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Background: Revision of a failed laparoscopic fundoplication carries higher risk of complication and lower chance of success compared to the original surgery. Transoral incisionless fundoplication (TIF) may be an endoscopic alternative for select GERD patients without need of a moderate/large hiatal hernia repair. The aim of this study was to assess feasibility, efficacy, and safety of TIF 2.

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Article Synopsis
  • A percutaneous intragastric trocar (PIT) is used to enhance endoscopic procedures by allowing the use of laparoscopic tools for anti-reflux surgery.
  • All four animals in the study successfully underwent fundoplication with no significant complications, and they were closely monitored for 14 days post-surgery.
  • Measurements of esophagogastric junction distensibility showed a change pre- and post-procedure, confirming that the anti-reflux effects from the procedure were maintained for at least 14 days.
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Obtaining quality tissue during ERCP biliary stricture sampling is of paramount importance for a timely diagnosis. While single-operator cholangioscopy (SOC)-guided biopsies have been suggested to be the superior biliary tissue acquisition modality given direct tissue visualization, less is known about the specimen histological quality. We aimed to analyze the specimen quality of SOC biopsies and compare the new generation forceps with prior "legacy" forceps.

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Introduction: Endoscopic sleeve gastroplasty (ESG) is a novel endoscopic bariatric therapy that complements current medical and surgical therapeutic offerings for weight management and fills an unmet need. Few meta-analyses compared ESG to laparoscopic sleeve gastrectomy (LSG). However, these studies relied on indirect evidence derived from non-comparative studies.

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Objective: We evaluated a protocolized endoscopic necrosectomy approach with a lumen-apposing metal stent (LAMS) in patients with large symptomatic walled-off pancreatic necrosis (WON) comprising significant necrotic content, with or without infection.

Summary Background Data: Randomized trials have shown similar efficacy of endoscopic treatment compared with surgery for infected WON.

Design: We conducted a regulatory, prospective, multicenter single-arm clinical trial examining the efficacy and safety of endoscopic ultrasound -guided LAMS with protocolized necrosectomy to treat symptomatic WON ≥6 cm in diameter with >30% solid necrosis.

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Background: Intragastric balloon (IGB) is a medical device used in the endoscopic treatment of pre-obesity and obesity. The involvement of IGB with biofilms has been previously reported; however, little is still known. We determine the frequency of biofilms naturally formed on the external surface of IGB, as well as some variables related to IGB types and patients features, species of fungi involved, and biofilm evidence.

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Background: Lumen apposing metal stent (LAMS) allows an easy access to peripancreatic fluid collections (PPFCs) and the possibility of performing direct endoscopic necrosectomy (DEN). The aim of our study was to evaluate the safety and efficacy of a new 20-mm LAMS in the management of PPFCs. This novel stent represents the largest diameter LAMS available on the market to date.

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Background: Endoscopic sleeve gastroplasty (ESG) is an option for patients with Class I and II obesity or patients who refuse to undergo a laparoscopic bariatric surgery. The aims of this study are as follows: (1) to demonstrate a short-term outcome after primary ESG and (2) to compare the effectiveness of weight loss between Class I and Class II obesity patients.

Methods: Patients undergoing ESG at four bariatric centers in Brazil between April 1, 2017 and December 31, 2018 were prospectively enrolled in the study (BMI 30.

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Background: Weight regain is common after Roux-en-Y gastric bypass.

Objectives: To assess the mechanisms of weight loss after 2 gastrojejunal anastomotic reduction (GJAR) procedures to treat weight regain.

Setting: University hospital, United States.

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The premise of self-expandable metal stent placement to restore luminal continuity in patients with acute left-sided malignant colonic obstruction is intuitively logical. However, the available body of literature addressing their benefit in this setting is contradictory. We sought to briefly critique the available literature and put the findings of Jiménez-Pérez et al.

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Background: Genetic studies have demonstrated a strong association between single nucleotide polymorphisms (SNPs) at IL28B and response to treatment with peginterferon (PEG) and ribavirin (RBV) in HCV monoinfected persons. We sought to test these associations in a prospective PEG / weight based ribavirin (WBR) treatment trial (ACTG A5178) (National Institution of Health registration number NCT00078403) in persons with HCV-HIV coinfection, and to develop a prediction score.

Methods: We selected subjects enrolled in A5178 who completed at least the first 12 weeks of the trial and had DNA available, and genotyped three SNPs at IL28B (rs12979860, rs12980275, rs8099917).

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Medical therapy for obesity.

Gastrointest Endosc Clin N Am

April 2011

The large number of people with mild to moderate obesity contribute more to its overall public health burdens than the smaller number of people with severe obesity. High-risk, high-efficacy strategies and population strategies focusing on lifestyle and behavioral modifications have failed to address the population burden of disease. An individualized approach is likely to provide the most effective management of this disease for the largest number of patients.

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Pre-mRNA binding to the yeast U2 small nuclear ribonucleoprotein (snRNP) during prespliceosome formation requires ATP hydrolysis, the highly conserved UACUAAC box of the branch point region of the pre-mRNA, and several factors. Here we analyzed the binding of a radiolabeled 2'-O-methyl oligonucleotide complementary to U2 small nuclear RNA to study interactions between the UACUAAC box, U2 snRNP, and Prp5p, a DEAD box protein necessary for prespliceosome formation. Binding of the 2'-O-methyl oligonucleotide to the U2 snRNP in yeast cell extract was assayed by gel electrophoresis.

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