Graft/Aneurysm infection

Infectious Disease Compendium

Graft/Aneurysm Infection

There are infections of

AAA or other pre-existing aneurysms or after trauma resulting in pseudo-aneurysms.

Embolic/bacteremic ie mycotic aneurysms

Infections of vascular grafts.

AAA infection (PubMed)

Classically Salmonella, S. aureus, and Clostridia. A hodgepodge of other organisms.

Infected pseudo-aneurysms

The femoral artery is most common after vascular catheterization. A hodgepodge of organisms.

Mycotic aneurysms

A complication of septic emboli in endocarditis, it is rare in the modern era and is due to what ever is causing the endocarditis. It is, of course, not fungal, but Osler thought they grossly they looked like a mushroom. Or maybe Osler was eating mushrooms at the time.

Infected Endovascular grafts

It can occur at the time of surgery or complication of other gi issues. A hodgepodge of infections reported. Often see air and/or inflammation around the graft on CT. If uncertain, the diagnostic modality of choice may be a CT/PET.

They present with some combination of pain, bacteremia, bleeding, and emboli depending on where the infection is.

Atypical mycobacteria associated with IVDA/injecting tap water (PubMed).

Treatment of all the above

Some combination of resection, iv antibiotics and lifetime suppression

 

Curious Cases

Relevant links to my Medscape blog

Kobayashi maru

Horse, Donkey, Zebra or Unicorn?

Pessimistally Optimistic

AAA Infection

Rare x Rare = Bad

I never meta static infection I liked

Last Update: 08/15/18.