Publications by authors named "Ahmed Abdel-Aal"

Article Synopsis
  • * Various catheter insertion methods for PD exist, including open surgical and percutaneous image-guided approaches, which have similar success rates and costs but are underutilized in the US.
  • * The article highlights key aspects of the percutaneous catheter insertion technique, patient selection criteria for urgent-start dialysis, and the outcomes of this method, encouraging its greater use in clinical practice.
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Objectives: Strong evidence suggests the occurrence of cerebral microbleeds (CMBs) in 5-13% of stroke patients within the first week after stroke onset. The aim of this work was to study risk factors associated with occurrence of CMBs in patients with stroke who received intravenous thrombolysis, and to clarify their impact on the clinical outcome.

Methods: This prospective observational study was conducted on 61 acute ischemic stroke patients eligible for treatment with recombinant tissue plasminogen activator (rt-PA).

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Quinoa is one of the highest nutritious grains, and global consumption of quinoa flour has increased as people pay more attention to health. Due to its high value, quinoa flour is susceptible to adulteration. Cross-contamination between quinoa flour and other flour can be easily neglected due to their highly similar appearance.

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Background Patients with unresectable, chemorefractory hepatic metastases from colorectal cancer have considerable mortality. The role of transarterial radioembolization (TARE) with yttrium 90 (Y) microspheres is not defined because most reports are from a single center with limited patient numbers. Purpose To report outcomes in participants with colorectal cancer metastases treated with resin Y microspheres from a prospective multicenter observational registry.

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PURPOSE We aimed to evaluate the safety and efficacy of 12 mm diameter polytetrafluoroethylene (PTFE)- covered stents for the creation of transjugular intrahepatic portosystemic shunt (TIPS) in cir- rhotic patients with portal hypertension complicated by variceal bleeding and volume-overload. METHODS This retrospective study included 360 patients who had TIPS created between January 2004 and December 2017 using 12 mm diameter PTFE-covered stents. Demographic data, model for end- stage liver disease (MELD) score, etiology of cirrhosis, and Charlson comorbidity index were recorded.

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Background: The first endovascular arteriovenous fistula (endoAVF) device (WavelinQ), a novel percutaneous technique of AVF creation, was approved by the Food and Drug Administration in 2018 and has been placed in a small number of United States patients on hemodialysis. It is unknown how often patients with advanced CKD have vascular anatomy suitable for WavelinQ creation. The goal of this study was to determine the proportion of patients with vascular anatomy suitable for WavelinQ creation and to assess patient characteristics associated with such suitability.

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Dialysis treatment for chronic kidney disease was first developed by Dr. Willem Kolff in 1943, and its availability began to grow in 1962 after which it has become a mainstay treatment for patients with chronic kidney disease. It is estimated that, in 2021, 15% of adults in the United States (∼37 million people) have chronic kidney disease, of which 661,000 individuals have renal failure, and 468,000 individuals require dialysis.

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Given a choice, most patients with end-stage renal disease prefer home dialysis over in-center hemodialysis (HD). Peritoneal dialysis (PD) is a home dialysis method and offers benefits such as absence of central venous access and therefore preservation of veins, low cost, and decreased time per dialysis session, as well as convenience. Survival rate for patients on PD has increased to levels comparable to in-center HD.

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A functional peritoneal dialysis (PD) catheter is the cornerstone for the success of renal replacement therapy. This success is largely dependent on adhering to best practices during catheter insertion, which starts with a comprehensive preoperative evaluation that helps in determining the catheter configuration type and both entry and exit sites. Additionally, following the best practice guidelines during PD catheter insertion minimizes undesirable complications and provides a durable functional access for dialysis.

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Chronic peritoneal dialysis (PD) is an underutilized renal replacement therapy in treating end-stage renal disease that has several advantages over hemodialysis. The success of continuous ambulatory PD is largely dependent on a functional long-term access to the peritoneal cavity. Several methods have been developed to place the PD catheter using both surgical and percutaneous techniques.

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Arteriovenous malformations (AVMs) are congenital high flow pathologic linkages between arteries and veins of different sizes that may occur in any part of the body. The clinical presentation is largely dependent on the size and location of AVMs and can range from an asymptomatic birthmark to congestive heart failure in extreme cases. In this report, we describe a 20-year-old male who presented with a large AVM of the right shoulder that resulted in significant cosmetic and physical impairment and treated with several sessions of endovascular embolization with good clinical outcomes.

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Article Synopsis
  • Major pelvic fractures are serious injuries typically caused by high-energy events like car accidents or falls, often leading to multiple complications.
  • A coordinated multidisciplinary approach is essential for effectively managing these patients.
  • Transcatheter embolization has emerged as a preferred minimally invasive technique for controlling severe bleeding associated with pelvic trauma, with a focus on its indications, techniques, and complications in the article.
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Article Synopsis
  • The study compares the outcomes of elective-start vs. urgent-start peritoneal dialysis (PD) catheter placements using different techniques from 2005 to 2018.
  • Both groups had similar demographic characteristics, except the elective-start group was older.
  • Catheter complication and removal rates were comparable between the two groups, but the urgent-start group experienced a higher rate of catheter leaks.
  • Overall, placement technique did not significantly impact the outcomes or patient survival at 12 months.
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Background: Surgical site infection (SSI) occurs in 5% to 7% of patients undergoing operative fixation of acetabular fractures, with reported risk factors including longer operative duration, increased blood loss, pelvic artery embolization, and concurrent abdominal organ injury, among others. Psoas muscle density is a measure of muscle quality and, as a metric for sarcopenia and/or nutrition status, has been associated with poor outcomes such as mortality across multiple surgical specialties. To date, psoas muscle density has not been explored for its associations with SSI in acetabular fracture patients.

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Purpose: The use of percutaneous cryoablation for T1b (4.1-7.0 cm) renal cell carcinoma, has not yet been widely adopted.

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Purpose: To examine the role of psoas muscle density (PD) measurement before transjugular intrahepatic portosystemic shunt (TIPS) creation in predicting survival when combined with Model for End-stage Liver Disease (MELD) score.

Materials And Methods: The medical records of 241 patients with cirrhosis who underwent TIPS creation between June 2005 and June 2015 were retrospectively reviewed. The patients were divided into 2 groups: those with variceal bleeding (VB; n = 113) and those with volume overload (VO; n = 128).

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Article Synopsis
  • The study aims to evaluate how different clinical factors can predict infections or dysfunctions in tunneled hemodialysis catheters.
  • A total of 177 adult patients had their data analyzed, revealing that 9.6% experienced infections and 38.4% had dysfunctions leading to catheter removal or exchange, with significant differences in time-to-removal based on the type of issue.
  • Key findings indicated that female patients and left-sided catheter placements were associated with higher risks for complications compared to other factors.
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Introduction: Conventional guidewire techniques are not always sufficient to restore arteriovenous graft patency in patients with challenging vascular scenarios. We discuss a novel approach to the treatment of chronic total occlusion of the venous outflow tract to enable successful arteriovenous graft thrombectomy.

Case Presentation: A 28-year-old female with end-stage renal disease on chronic hemodialysis and recurrent arteriovenous graft thromboses presented with a clotted thigh graft.

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Background: Several peritoneal dialysis catheter (PDC) placement techniques have been described. The objective of this study was to compare the fluoroscopy and ultrasound guidance technique with the laparoscopic technique.

Methods: We retrospectively reviewed the medical records of 260 patients who had their first PDC placed between January 2005 and June 2016.

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Article Synopsis
  • Hepatocellular carcinoma (HCC) is increasingly common and often diagnosed at advanced stages, leading to poor patient outcomes and limited treatment options.
  • Diagnostic radiologists take advantage of imaging techniques, such as contrast-enhanced CT and MRI, to effectively diagnose and stage HCC without needing tissue samples.
  • Interventional radiologists use various targeted therapies for treatment, and follow-up imaging post-treatment utilizes specific radiologic response criteria to assess the effectiveness of these approaches.
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We report a case of an 81-year-old woman with multifocal hepatocellular carcinoma who underwent transarterial chemoembolization. The patient had significant superior mesenteric artery (SMA) ostial stenosis, which led to retrograde flow in the retroportal artery to the SMA. The authors adopted several approaches to avoid potential nontarget embolization that might result from the change in the hemodynamics in the hepatoenteric arteries by initially stenting the SMA ostial stenosis as well as the use of the Surefire infusion system and balloon occlusion for delivery of chemoembolization material to tumors in the hepatic lobes.

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Article Synopsis
  • - A 79-year-old man experienced complications after laparoscopic gallbladder surgery, having abdominal pain and bile leaking from a catheter.
  • - An endoscopic procedure revealed a leak in the cystic duct, but attempts to seal it with a metal stent were unsuccessful.
  • - The team then used an innovative method involving percutaneous embolization with coils and gelatin sponge to successfully address the leakage, a technique not previously documented.
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We present the case of a 54-year-old male patient diagnosed with a right upper lobe lung cancer and was referred for resection. Positron emission tomography-computed tomography scan showed a prominent vascular structure in the right lung, suspicious for vascular malformation. A computed tomography angiography was done, demonstrating an intercostobronchial trunk-pulmonary artery fistula.

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