Abdominal Aortic Aneurysm

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Abdominal Aortic Aneurysm

• Bryan Imayanagita
• UCI T-RAP
• 2/2/11

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Background

• Aka AAA
• Aneurysm swelling/dilation
• Most common in men over 60. smoking increases
  risk
• Rupture most dangerous complication

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Pathophysiology

• Degredation of tuncia media
• Metalloproteinases destroy elastin making aortic
  wall more susceptible to change in BP
• Abdominal aorta contains less elastin compared
  with the thoractic aorta higher chance in
  abdomen for aneurysm
• Age causes decline in elastin
• 90 infrarenally

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Causes

• Smoking
• Atherosclerosis
• Heredity
• Hypertension
• High cholesterol
• Trauma

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Symptoms

• Often asymptomatic
• Can manifest as back, abdomen, groin pain
• Palpable abdominal mass upon examination

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Diagnosis

• Physical examination
• CT/Ultrasound
• MRI and Angiography used less often

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Treatment

• Conservative
• Surgery more risky
• Lifestyle changes cholesterol meds, stop
  smoking, etc.
• Surgical
• Endovascular stent insertion
• Open surgery

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Stent Insertion
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Open Repair
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Prognosis

• s/p mortality 40 for ruptured AAA
• Pre-rupture surgery 1-6

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Sources

• http//my.clevelandclinic.org/disorders/aneurysms/
  hic_abdominal_aortic_aneurysm.aspx
• http//emedicine.medscape.com/article/463354-overv
  iew
• http//www.mayoclinic.org/aortic-aneurysm/
• http//www.nlm.nih.gov/medlineplus/ency/article/00
  0162.htm