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Related Concept Videos

Esophageal Varices-II: Clinical Features and Management01:28

Esophageal Varices-II: Clinical Features and Management

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Esophageal varices often manifest as gastrointestinal bleeding episodes, presenting symptoms like hematemesis (vomiting of blood), hematochezia (passing fresh blood via the rectum), and melena (black, tarry stools). Other signs can include weight loss, anorexia, abdominal discomfort, jaundice, pruritus, altered mental status, and muscle cramps.
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol...
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Esophageal Varices-I: Introduction01:24

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Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...
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Pyloric Obstruction01:11

Pyloric Obstruction

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Pyloric obstruction, also referred to as gastric outlet obstruction, is a condition characterized by narrowing or blockage at the pylorus—the muscular valve regulating the flow of stomach contents into the duodenum. When this passage becomes impaired, the stomach cannot effectively empty its contents into the small intestine. This disruption leads to a range of gastrointestinal symptoms, including early satiety, bloating, epigastric pain, postprandial nausea, persistent vomiting, and...
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Intestinal Obstruction II: Pathophysiology01:07

Intestinal Obstruction II: Pathophysiology

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Intestinal obstruction triggers a series of physiological responses, starting with gas and fluid accumulation in the bowel segment proximal to the obstruction, leading to distension. This distended intestine compresses the diaphragm, hindering lung expansion and potentially leading to reduced respiratory effort, atelectasis, and pneumonia.To overcome the blockage, the gut intensifies contractions, causing colicky abdominal pain, nausea, and vomiting, which reduces fluid and food intake and...
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Gastritis III: Clinical Manifestations and Management01:23

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The clinical manifestations of gastritis can vary depending on the cause and type of gastritis, but some common symptoms may include the following.
Clinical manifestations of acute gastritis
The patient with acute gastritis may have a rapid onset of symptoms, such as epigastric pain or discomfort, dyspepsia, anorexia, hiccups, or nausea and vomiting, which can last from a few hours to a few days. Erosive or hemorrhagic gastritis may cause bleeding, which may manifest as blood in vomit or as...
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Inflammatory Bowel Disease I: Ulcerative Colitis01:27

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Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
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Related Experiment Video

Updated: May 5, 2026

Multimodality Diagnosis of Mesenteric Ischemia
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[Obscure gastrointestinal bleeding].

J Pastor, S Adámek

    Rozhledy V Chirurgii : Mesicnik Ceskoslovenske Chirurgicke Spolecnosti
    |November 27, 2013
    PubMed
    Summary
    This summary is machine-generated.

    Obscure gastrointestinal bleeding (OGIB) is diagnosed when standard endoscopy fails. This review covers advanced diagnostic and treatment strategies for persistent or undiagnosed OGIB, including surgical options.

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    Area of Science:

    • Gastroenterology
    • Digestive Endoscopy
    • Surgical Interventions

    Background:

    • Obscure gastrointestinal bleeding (OGIB) accounts for 5% of all gastrointestinal bleeding cases.
    • Diagnosis is challenging as bleeding sources are often in the small intestine or stop before standard endoscopic examination.
    • Conventional gastroscopy and colonoscopy frequently fail to identify the bleeding source.

    Purpose of the Study:

    • To provide a comprehensive overview of current diagnostic and treatment options for OGIB.
    • To outline a management strategy for diagnostically difficult cases of obscure gastrointestinal bleeding.
    • To discuss the role of advanced imaging and endoscopic techniques in managing OGIB.

    Main Methods:

    • Review of diagnostic modalities including X-ray, CT, MRI, scintigraphy, flexible enteroscopy, and capsule enteroscopy.
    • Discussion of treatment algorithms for persistent or unidentified bleeding.
    • Evaluation of indications for surgical intervention when endoscopic or radiologic methods fail.

    Main Results:

    • Advanced imaging and endoscopic techniques improve the detection rate of bleeding sources in the small intestine.
    • Surgical intervention remains a crucial option when conservative measures are unsuccessful.
    • A systematic approach is necessary for effective management of OGIB.

    Conclusions:

    • Effective management of OGIB requires a multi-modal approach combining advanced diagnostics and tailored treatments.
    • Early consideration of surgical intervention may be warranted in select cases of refractory bleeding.
    • Further research into novel diagnostic and therapeutic strategies for OGIB is essential.