Learning objectives
provide data and useful signs for the radiologist to identify the causes of mesenteric ischemia and its consequences in the intestine to achieve an effective and rapid treatment of ischemia.
exhibit multislice computed tomography of patients with ischemia,
with great educational value.
Expose follow-up images after treatment.
Acute mesenteric ischemia is a vascular emergency that compromises intestinal viability,
with high morbidity and mortality.
It represents an inadequate state of tissue perfusion with inability to satisfy the metabolic demands of the organs of the mesenteric circulation....
Background
Causes of MI:
Embolism of the superior mesenteric artery (SMA): it is the most frequent cause of MI,
with an incidence of up to 60% of the ischemia.
It is produced by an embolus that originates in the left atrium or due to an arrhythmia (atrial fibrillation) or in hypokinetic regions produced by a previous myocardial infarction.
The superior mesenteric artery is the visceral vessel most susceptible to emboli due to its acute angle,
long diameter,
and high flow.
About 15% of the emboli are...
Findings and procedure details
Methods for the diagnosis:
abdominal x-ray:It is the initial request for diagnostic imaging in patients with acute abdominal pain,
but it has a limited role in the diagnosis,
especially at the beginning of the picture.
An X-ray without findings does not exclude the diagnosis of MI.
In mesenteric venous thrombosis,
dilated loops of the small intestine,
hydro-aerial levels,
and thumb impression images (due to wall edema) are observed.
In some cases,
intramural pneumatosis can be seen if it is present or gas in the mesenteric...
Conclusion
The MI has different causes and varied forms of presentation,
with different effects of intestinal vitality.
Because mesenteric ischemia is associated with high mortality,
it is important to make a diagnosis of the cause of MI,
for immediate and appropriate therapeutic correction.
Multislice computed tomography is very effective and specific in the diagnosis of mesenteric ischemia and to detect complications after treatment.
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