Publications by authors named "Haroon M Shahid"

Background: Viral infections are known to impact the pancreato-biliary system; however, there are limited data showing that the same is true of COVID-19. Endoscopic retrograde cholangiopancreatography (ERCP) can safely be performed in patients with COVID-19 infection, but outcomes of patients with COVID-19 infections and concomitant pancreatic and biliary disease requiring endoscopic intervention are unknown.

Aims: This study aims to evaluate the severity of pancreaticobiliary diseases and post-ERCP outcomes in COVID-19 patients.

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Background: Endoscopic ultrasound (EUS)-guided gastroenterostomy (EUS-GE) is a minimally invasive therapy for patients with gastric outlet obstruction without the risks of surgical bypass and the limited long-term efficacy of enteral self-expanding metal stent placement. However, due to its novelty, there is a lack of significant data comparing long-term outcomes of patients with EUS-GE, based on the underlying disease. In this study, we compare outcomes of EUS-GE on benign versus malignant indications.

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Article Synopsis
  • Peroral endoscopic myotomy (POEM) is an effective treatment for achalasia that requires monitoring of carbon dioxide (CO₂) levels.
  • A study comparing invasive (PaCO₂ with arterial line) and noninvasive (etCO₂) monitoring in 71 patients found a strong correlation between the two methods, with average PaCO₂ being slightly higher than etCO₂.
  • The results showed that while invasive monitoring increased procedure and anesthesia times, there was no significant difference in adverse events between the two groups, suggesting etCO₂ is sufficient for most patients.
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Article Synopsis
  • Cholecystectomy (CCY) is the preferred treatment for acute cholecystitis (AC), with alternative nonsurgical options being EUS-guided and PT-guided gallbladder drainage.
  • A study compared outcomes of patients undergoing CCY after EUS-GBD vs PT-GBD, looking at demographics, procedure outcomes, and surgical details across 139 patients.
  • Results indicated that EUS-GBD led to faster surgical times, quicker symptom resolution, and shorter hospital stays than PT-GBD, while both methods had similar rates of converting to open surgery.
  • EUS-GBD is a viable option for gallbladder drainage and does not hinder follow-up CCY.
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Introduction: Endoscopic ultrasound-guided biliary drainage (EUS-BD) is the procedure of choice for patients who cannot undergo endoscopic retrograde cholangiopancreatography (ERCP). The outcomes of patients undergoing surgery after EUS-BD for malignancy are unknown.

Methods: We conducted an international, multicenter retrospective comparative study of patients who underwent hepatobiliary surgery after having undergone EUS-BD or ERCP from 6 tertiary care centers.

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Endoscopic techniques are rapidly emerging for resection of subepithelial tumors (SETs). Submucosal tunneling for endoscopic resection (STER), endoscopic full-thickness resection (EFTR) and laparoscopic endoscopic cooperative surgery (LECS) are current alternatives to open surgery. In this study, we aimed to compare the three endoscopic techniques.

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Introduction: Single-use disposable duodenoscopes (SDD) have been developed to mitigate infectious risks related to reusable duodenoscopes. The aim of this study is to compare the safety and efficacy of the two available SDDs in the United States.

Methods: We conducted a comparative study of 2 SDD in consecutive ERCP procedures performed by expert endoscopists from 9 academic centers.

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Background: Endoscopic ultrasound-directed transgastric ERCP (EDGE) has become standard-of-care therapy at many centers for pancreaticobiliary disease in patients with Roux-en-Y Gastric Bypass. In this study, we aimed to evaluate the opinions and practices of endoscopists who perform EDGE.

Methods: A 22-question utilization of EDGE survey was sent to 36 advanced endoscopists at tertiary care centers in the United States.

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Background: Endoscopic sleeve gastroplasty (ESG) is an incisionless procedure that reduces the size of the gastric cavity. In prior studies, it has been proven to be a safe and effective treatment for obesity. In this study, we performed a collaborative study to evaluate the effectiveness of ESG among new endobariatric programs.

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Background: Endoscopic submucosal dissection (ESD) and transanal endoscopic microsurgery (TEM) are minimally invasive procedures that treat early rectal cancer (ERC). Both are effective treatments, yet there are very few studies comparing them. The aim of our study was to identify ideal candidates for each procedure.

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Background And Aims: Digital single-operator cholangioscopy (DSOC) allows direct visualization of the biliary tree for evaluation of biliary strictures. Our objective was to assess the interobserver agreement (IOA) of DSOC interpretation for indeterminate biliary strictures using newly refined criteria.

Methods: Fourteen endoscopists were asked to review an atlas of reference clips and images of 5 criteria derived from expert consensus.

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Introduction: Endoscopic management of Zenker diverticuli (ZD) has traditionally been via septotomy technique. The recent development of tunneling technique has shown to be both efficacious and safe. The aim of this study is to evaluate the tunneling technique using per oral endoscopic myotomy (Z-POEM) versus septotomy.

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Background And Aim: Gastroparesis is a potentially debilitating gastric motility disorder with limited treatment options. Highest efficacy treatments include gastric per-oral endoscopic myotomy (GPOEM) and surgical pyloromyotomy. This study compares the efficacy and safety of GPOEM versus laparoscopic pyloromyotomy for refractory gastroparesis.

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