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Related Concept Videos

Endoscopic Cholesteatoma Surgery08:47

Endoscopic Cholesteatoma Surgery

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The present protocol describes a step-by-step guide for the complete endoscopic removal of epitympanic cholesteatoma with different techniques for cholesteatoma dissection and bone removal for...
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This video describes a bariatric surgery-Roux-en-Y procedure. This involves the cutting of the jejunum- the middle portion of the intestine- to generate two intestinal limbs. The biliary limb is attached to the existing intestinal loop and the alimentary limb is attached to the stomach, creating a gastric bypass. The gastric bypass created here helps to decrease the nutrient uptake and efficiently reduces body...
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Stereotaxic (or stereotactic) surgery is a method used to manipulate the brain of living animals. This technique allows researchers to accurately target deep structures within the brain through the use of a stereotaxic atlas, which provides the 3D coordinates of each area with respect to anatomical landmarks on the skull. After the skull is exposed, anesthetized animals are mounted on a specialized instrument known as a stereotaxic frame, which enables the precise placement of experimental...
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Related Experiment Video

Updated: Jan 19, 2026

Endoscopic Cholesteatoma Surgery
08:47

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Published on: January 19, 2022

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Bariatric Surgery Causing Hyperammonemia.

Prathik Krishnan1, Poornima Ramadas2, David Landsberg3

  • 1Pulmonary Critical Care, State University of New York Upstate Medical University, Syracuse, USA.

Cureus
|September 13, 2019
PubMed
Summary
This summary is machine-generated.

Bariatric surgery can lead to rare but severe neurological complications like hyperammonemic encephalopathy. Early recognition and nutritional support are crucial for managing these serious outcomes.

Keywords:
bariatric surgeryhyperammonemianutritional deficiencies following bariatric surgery

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Last Updated: Jan 19, 2026

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Roux-en-Y Gastric Bypass Procedure: A Bariatric Surgical Procedure for Gastric Resectioning in Murine Model
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Area of Science:

  • Neurology
  • Gastroenterology
  • Nutritional Science

Background:

  • Bariatric surgery is effective for obesity but carries risks of short and long-term complications due to anatomical changes.
  • Revision surgery for gastric bypass complications can predispose patients to further issues.

Observation:

  • A 45-year-old female developed a rash, lethargy, and brain MRI findings consistent with hypoxic injury post-gastric bypass revision.
  • Elevated ammonia levels (peaking at 432 mmol/L) and deficiencies in zinc and amino acids were identified.

Findings:

  • The patient presented with hyperammonemic encephalopathy, a rare neurological complication following bariatric surgery.
  • Nutritional support with fortified parenteral feeds led to progressive improvement in encephalopathy.

Implications:

  • This case underscores the importance of recognizing and managing rare neurological complications of bariatric surgery.
  • Understanding the mechanisms and predispositions for hyperammonemic encephalopathy is vital for timely intervention and improved patient outcomes.