Publications by authors named "Umar Hayat"

Background: Per-oral endoscopic myotomy (POEM) is an effective option for treating achalasia. Despite its high efficacy, a fraction of patients remain symptomatic after POEM, and the data on the optimal management of these patients is limited. Few studies have evaluated the effectiveness of repeat POEM after a failed POEM.

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  • Alcohol-related liver disease (ALD) is a growing public health issue, especially among people under 55, leading to an increase in alcohol-attributable deaths that are projected to rise further by 2030.
  • Data from the CDC revealed a significant increase in mortality rates, particularly in the 25-34 age group, with rates climbing from 3.9 per 100,000 in 1999 to an expected 14.4 per 100,000 by 2030.
  • This upward trend highlights the urgent need for public health interventions to address and reduce ALD mortality rates in younger populations.
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  • Dual antiplatelet therapy (DAPT) combined with proton pump inhibitors (PPI) can significantly reduce the risk of upper gastrointestinal bleeding (UGIB) in patients with acute coronary syndrome (ACS) compared to DAPT alone.
  • A meta-analysis of seven randomized controlled trials involving 6708 patients showed a marked decrease in UGIB rates and all-cause mortality when PPI was added, with no negative impact on major cardiovascular events.
  • Specifically, the PPI + DAPT group had a risk ratio of 0.39 for UGIB and 0.46 for mortality, indicating substantial benefits from this combination treatment.
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Background: Patients with decompensated cirrhosis have a higher risk of hospitalization, ICU admission, and death from COVID-19. The impact of demographics on these outcomes remains uncertain.

Methods: The SECURE-Liver and COVID-Hep databases were utilized to evaluate disparities in COVID-19 outcomes.

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Non-alcoholic liver disease (NAFLD) may be associated with cardiovascular diseases; however, only a few studies have analyzed this relationship. We aimed to assess the epidemiologic data and the association between NAFLD and acute myocardial infarction (AMI) in the United States. The National Inpatient Sample (NIS) database 2016-2019 was queried using ICD10-CM diagnostic codes to identify hospitalizations of AMI + NAFLD.

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Background/objectives: Predicting inpatient mortality for acute pancreatitis (AP) patients in the ICU is crucial for optimal treatment planning. This study aims to develop a concise risk score model for this purpose, enhancing the predictability and management of AP in ICU settings.

Methods: We included 380 patients in our training set.

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  • The study evaluated how frailty affects outcomes after endoscopic retrograde cholangiopancreatography (ERCP) in the U.S., using data from the National Readmission Database between 2016 and 2020.
  • Among 885,416 ERCP index admissions, 9.9% experienced readmissions within 30 days, with higher readmission rates and odds for those categorized as intermediate and high frailty compared to low frailty.
  • Increased frailty also correlated with longer hospital stays and higher hospitalization costs, as well as a greater risk of inpatient mortality for those in the intermediate and high frailty groups.
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  • Complete esophageal obstruction (CEO) is a rare but serious complication from radiation therapy for esophageal or head and neck cancers, and managing it can be difficult using standard endoscopic methods.
  • A study on six patients demonstrated that a combined anterograde and retrograde endoscopic dilation (CARD) approach successfully restored esophageal function in 86% of cases, indicating high technical success.
  • While some adverse events occurred, including pneumothorax in two patients, most had improved swallowing abilities after the procedure, suggesting CARD is a safer and effective option compared to traditional methods.
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Background And Aims: Co-axial plastic double pigtail stents (DPSs) are commonly placed through lumen apposing metal stents (LAMS) in patients with pancreatic fluid collections (PFCs) to decrease the risk of adverse events. In this meta-analysis, we have compared the outcomes of LAMS plus co-axial DPS versus LAMS alone in patients with PFCs.

Methods: We reviewed several databases to identify the studies that compared outcomes of LAMS with DPS to LAMS without DPS in the treatment of PFCs.

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  • TC-325 powder has shown effective results in managing upper gastrointestinal bleeding (UGIB) related to malignancies compared to standard treatments, as indicated by a meta-analysis of randomized controlled trials.
  • The study analyzed data from four RCTs involving 227 patients, revealing that TC-325 significantly improved immediate hemostasis rates without affecting other important outcomes like rebleeding, surgery needs, or mortality.
  • The conclusion emphasizes that TC-325 is a superior option for achieving immediate control of bleeding in malignancy-related UGIB.
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Objective: Gastric antral vascular ectasia (GAVE) is characterized by vascular ectasias accounting for 4% of nonvariceal upper gastrointestinal bleeds, which can range from occult bleeds to severe acute upper gastrointestinal bleeding. In turn, GAVE can lead to severe morbidity and recurrent hospitalization. Current endoscopic treatments for GAVE include argon plasma coagulation (APC), endoscopic band ligation (EBL), and radiofrequency ablation.

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Pancreatic cancer is a rare but lethal cancer due to its biologically aggressive nature, advanced stage at the time of diagnosis, and poor response to oncologic therapies. The risk of pancreatic cancer is significantly higher to 5% in certain high-risk individuals with inherited genetic susceptibility. Screening for pancreatic cancer in these individuals from high-risk groups can help with the early detection of pancreatic cancer as well as the detection of precursor lesions leading to early surgical resection and improved overall outcomes.

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  • Most routine endoscopic procedures use sedation for patient comfort, with Propofol, benzodiazepines, and opioids being popular choices, but Remimazolam is emerging as a new option since its FDA approval in July 2020.
  • Remimazolam is an ultra-short-acting benzodiazepine with favorable pharmacological properties, showing non-inferior efficacy compared to Propofol while having fewer side effects like hemodynamic instability and respiratory depression.
  • This review explores Remimazolam's characteristics, effectiveness, and safety, suggesting it could be a safer and more efficient alternative for procedural sedation in gastrointestinal endoscopy.
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Background: Achalasia can cause disabling symptoms that may substantially impair the quality of life. Peroral endoscopic myotomy (POEM) has shown promising results in the management of achalasia. In this meta-analysis we have evaluated the feasibility and safety of single-session POEM with fundoplication (POEM+F) in patients with achalasia.

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Background: The safety and technical success of endoscopic ultrasound-guided antegrade treatment (EUS-AG) compared to balloon enteroscopy-assisted endoscopic cholangiopancreatography (BE-ERCP) for choledocholithiasis in Roux-en-Y gastrectomy has not been well documented. We performed a systematic review and meta-analysis to assess the safety and efficacy of the 2 procedures.

Methods: A systematic search of multiple databases was undertaken through January 25, 2024, to identify relevant studies comparing the 2 procedures.

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Background And Aims: Drainage of pancreatic fluid collections (PFCs) is required in select cases including infected or symptomatic collections. In this network meta-analysis, we have compared lumen-apposing metal stents (LAMS), fully covered self-expandable metal stents (FCSEMS), and double-pigtail stents (DPS) to identify the most useful stent type in the management of PFCs.

Methods: We reviewed several databases to identify studies that compared DPS or FCSEMS with LAMS and the ones which compared DPS with FCSEMS for the treatment of PFCs.

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Pancreatic cancer is one of the leading causes of cancer-related deaths worldwide. Pancreatic lesions consist of both neoplastic and non-neoplastic lesions and often pose a diagnostic and therapeutic challenge due to similar clinical and radiological features. In recent years, pancreatic lesions have been discovered more frequently as incidental findings due to the increased utilization and widespread availability of abdominal cross-sectional imaging.

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Introduction: Endoscopic eradication therapy (EET) combining endoscopic resection (ER) with endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD) followed by ablation is the standard of care for the treatment of dysplastic Barrett's esophagus (BE). We have previously shown comparable rates of complete remission of intestinal metaplasia (CRIM) with both approaches. However, data comparing recurrence after CRIM are lacking.

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Background: Management of choledocholithiasis in patients with Roux-en-Y gastric bypass surgery is challenging. This study aims to compare technical success rates, adverse events, and procedural time between 3 current approaches: endoscopic ultrasound-directed transgastric Endoscopic retrograde cholangiopancreatography (ERCP) (EDGE), enteroscopy-assisted ERCP (E-ERCP), and laparoscopic-assisted ERCP (LA-ERCP).

Methods: A systematic search of 5 databases was conducted.

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Background And Aims: EUS-guided gallbladder drainage using lumen-apposing metal stents (EUS-GBD-LAMSs) and percutaneous cholecystostomy for gallbladder drainage (PTGBD) are the alternative treatment modalities in high-risk surgical patients with acute cholecystitis (AC). The aim of this study was to compare the safety of these procedures for AC in surgically suboptimal candidates.

Methods: Six studies compared the 2 groups' early, delayed, and overall adverse events; they also compared length of hospital stay, re-interventions, and re-admissions rate.

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Upper gastrointestinal (GI) injuries are associated with transesophageal echocardiography (TEE) complications. We reviewed rates and various types of complications with GI injuries. A comprehensive literature search using five databases was conducted.

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  • The study analyzed where patients died from anal cancer in the USA between 2003 and 2020, using death certificate data.
  • A total of 16,296 deaths were recorded, with the death rate rising from 0.191 to 0.453 per 100,000 people during this period.
  • Notably, while deaths at home and in hospice facilities increased significantly, those occurring in inpatient facilities dropped substantially.
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Objective: This metanalysis aims to assess the efficacy and safety of biliary stenting along with radiofrequency ablation compared with stents alone to treat malignant biliary obstruction (MBO) due to extrahepatic biliary strictures secondary to cholangiocarcinoma, pancreatic cancer, and metastatic cancer.

Methods: A systemic search of major databases through April 2022 was done. All original studies were included comparing radiofrequency ablation with stenting versus stenting alone for treating malignant biliary strictures.

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Objectives: To determent the effectiveness of Rikli and Regazzoni three-column theory in treating intra-articular fractures of the distal radius with T-plate and K-wire in terms of functional outcome and fracture union.

Methods: The cross-sectional study was conducted at the Department of Orthopaedic Surgery and Traumatology, King Edward University, Mayo Hospital, Lahore, Pakistan, from June 2013 to March 2017, and comprised patients aged 15-60 years having closed intraarticular fracture of the distal radius <1 month older. The subjects were divided into two group A, managed by percutaneous K-wire fixation, and group B, managed with open reduction and internal fixation using T-plates.

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Hereditary hemochromatosis is an autosomal recessive disorder characterized by dysregulated iron homeostasis resulting in body iron overload. Hemochromatosis leads to excessive iron deposition in the parenchymal cells of different body organs, resulting in the compromise of their normal functioning in genetically predisposed patients. It presents in genetically predisposed male patients aged between 40 and 70 years.

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