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Related Concept Videos

Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
Ischemic Stroke l: Introduction01:15

Ischemic Stroke l: Introduction

Ischemic stroke is an acute cerebrovascular condition in which blood flow to a brain region is suddenly interrupted, leading to tissue infarction. Neurons depend on continuous oxygen and glucose supply, so even brief reductions in perfusion cause energy failure, ionic imbalance, and irreversible injury. Ischemic strokes are classified into thrombotic and embolic types based on their underlying mechanisms.Thrombotic MechanismsThrombotic stroke develops when a clot forms within a cerebral artery.
Intestinal Obstruction II: Pathophysiology01:07

Intestinal Obstruction II: Pathophysiology

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...
Intestinal Obstruction I: Introduction01:29

Intestinal Obstruction I: Introduction

Intestinal obstruction is a partial or complete blockage of the small or large intestine that disrupts the normal flow of intestinal contents through the lumen. This interruption impairs digestion, absorption, and fluid balance, and may lead to serious complications if not treated promptly.Mechanical ObstructionMechanical obstruction occurs when a physical blockage prevents intestinal contents from passing, arising from within the lumen or the bowel wall, or from external compression.Adhesions,...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
Ischemic Stroke ll: Pathophysiology01:15

Ischemic Stroke ll: Pathophysiology

An ischemic stroke occurs when a cerebral blood vessel becomes obstructed, most often by a thrombus or embolus, interrupting the delivery of oxygen and glucose to brain tissue. Because neurons rely on continuous aerobic metabolism, energy failure begins within minutes of reduced perfusion. The region receiving the least blood flow becomes the infarct core, an area of irreversible cellular death. Surrounding this core lies the penumbra, a zone of hypoperfused but still viable tissue that is...

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Updated: Jun 4, 2026

Multimodality Diagnosis of Mesenteric Ischemia
05:07

Multimodality Diagnosis of Mesenteric Ischemia

Published on: July 21, 2023

Mesenteric ischemia.

T Gregory Walker1

  • 1Section of Cardiovascular Imaging and Intervention, Massachusetts General Hospital, Boston, Massachusetts.

Seminars in Interventional Radiology
|February 18, 2011
PubMed
Summary
This summary is machine-generated.

Mesenteric ischemia, a condition of reduced intestinal blood flow, requires prompt diagnosis and intervention to prevent bowel infarction. Imaging is crucial for identifying both acute and chronic forms, guiding timely treatment.

Keywords:
Acute mesenteric ischemiachronic mesenteric ischemiaintestinal anginanonocclusive mesenteric ischemia

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Area of Science:

  • Gastroenterology
  • Vascular Surgery
  • Diagnostic Imaging

Background:

  • Mesenteric ischemia involves acute or chronic reduction in intestinal blood flow.
  • Acute mesenteric ischemia is a life-threatening emergency potentially leading to bowel infarction.
  • Chronic mesenteric ischemia typically results from atherosclerotic arterial disease, presenting as intestinal angina.

Purpose of the Study:

  • To review the classification, causes, and clinical presentations of mesenteric ischemia.
  • To emphasize the critical role of imaging in diagnosing acute and chronic mesenteric ischemia.
  • To highlight the importance of early diagnosis and intervention in managing mesenteric ischemia.

Main Methods:

  • Review of literature on mesenteric ischemia classification and causes.
  • Discussion of diagnostic approaches, including clinical presentation, physical examination, laboratory data, and imaging.
  • Overview of treatment options for mesenteric ischemia.

Main Results:

  • Common causes of acute mesenteric ischemia include arterial embolism, arterial thrombosis, nonocclusive mesenteric ischemia, and mesenteric venous thrombosis.
  • Chronic mesenteric ischemia is characterized by postprandial abdominal pain, weight loss, and food aversion.
  • Imaging modalities are essential for accurate diagnosis of both acute and chronic mesenteric ischemia.

Conclusions:

  • Early recognition and intervention are vital for improving outcomes in acute mesenteric ischemia.
  • Imaging plays a pivotal role in the diagnosis and management of mesenteric ischemia.
  • Understanding imaging findings and treatment options can prevent severe complications of mesenteric ischemia.