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Once the aorta traverses the diaphragmatic plane at the aortic hiatus, it is known as the abdominal aorta. This anatomical structure is positioned leftward of the spinal column, encased within a cocoon of adipose tissue behind the peritoneal cavity. It terminates at the L4 vertebra, where it splits into the common iliac arteries. Prior to this bifurcation, the abdominal aorta gives rise to several vital branches.
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Blood Supply to the Digestive System01:16

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Splanchnic circulation refers to the network of blood vessels that supply and drain blood from the abdominal organs involved in digestion, including the stomach, liver, pancreas, intestines, and spleen. This circulation delivers essential nutrients and oxygen while removing waste products from these organs.
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Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
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Aneurysm II: Clinical Manifestations and Diagnostic Studies01:21

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Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
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Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

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The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
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Acute Coronary Syndrome I: Introduction01:30

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Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
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Related Experiment Video

Updated: Nov 28, 2025

Multimodality Diagnosis of Mesenteric Ischemia
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Multimodality Diagnosis of Mesenteric Ischemia

Published on: July 21, 2023

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Superior mesenteric artery syndrome.

Bipin Karki1, Bishika Pun2, Amit Shrestha3

  • 1Department of Critical Care Medicine Om Hospital and Research Center Kathmandu Nepal.

Clinical Case Reports
|November 25, 2020
PubMed
Summary
This summary is machine-generated.

Superior mesenteric artery (SMA) syndrome is a rare cause of duodenal obstruction. Diagnosis involves considering patient history, weight loss, and imaging, with conservative management often preceding surgery.

Keywords:
Superior mesenteric artery syndromeaorto‐mesenteric angleaorto‐mesenteric distanceduodenal obstruction

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Targeting the Rat's Small Bowel: Long-Term Infusion into the Superior Mesenteric Artery
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Area of Science:

  • Gastroenterology
  • Abdominal Surgery
  • Diagnostic Imaging

Background:

  • Superior mesenteric artery (SMA) syndrome is an uncommon condition causing duodenal obstruction.
  • It is crucial to consider SMA syndrome in cases of unexplained duodenal obstruction.

Purpose of the Study:

  • To highlight the diagnostic considerations for SMA syndrome.
  • To outline the management approach for patients presenting with SMA syndrome.

Main Methods:

  • Review of clinical presentation and diagnostic tools for SMA syndrome.
  • Discussion of treatment strategies, including conservative and surgical options.

Main Results:

  • Patient history, particularly recent weight loss, is a key diagnostic indicator.
  • Imaging modalities play a significant role in confirming the diagnosis of SMA syndrome.

Conclusions:

  • SMA syndrome should be considered in the differential diagnosis of duodenal obstruction.
  • Conservative management should be attempted prior to surgical intervention for SMA syndrome.