Difference between revisions of "Aortocaval fistula"

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*Complication of [[abdominal aortic aneurysm]]
 
*Complication of [[abdominal aortic aneurysm]]
 
*Rare (<1% of all AAAs, ~3% of ruptured AAAs) but life-threatening (mortality ~50%)
 
*Rare (<1% of all AAAs, ~3% of ruptured AAAs) but life-threatening (mortality ~50%)
*Inflammation around aorta--> adherence of aorta to vein --> pressure and erosion into vein--> fistula
+
*Caused by inflammation around aorta adherence of aorta to vein pressure and erosion into vein fistula
  
 
==Clinical Features==
 
==Clinical Features==
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==See Also==
 
==See Also==
*[[AAA]
+
*[[Abdominal aortic aneurysm]]
  
 
==External Links==
 
==External Links==

Revision as of 03:20, 5 September 2016

Background

  • Complication of abdominal aortic aneurysm
  • Rare (<1% of all AAAs, ~3% of ruptured AAAs) but life-threatening (mortality ~50%)
  • Caused by inflammation around aorta → adherence of aorta to vein → pressure and erosion into vein → fistula

Clinical Features

  • Presentation depends on origin, size, and location of fistula
  • Signs/symptoms of AAA (abdominal/flank/back pain, shock if ruptured)
  • High output cardiac failure
  • Pedal edema (due to venous hypertension)
  • Renal insufficiency (due to reduced perfusion to kidneys)
  • Hematuria
  • Bruit

Differential Diagnosis

Evaluation

  • US to identify AAA
  • CT angio

Management

  • Treat hypovolemia/shock
  • Emergent surgical repair

Disposition

  • Admit

See Also

External Links

References