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Acute Aortic Disease.. - Index of

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220 Shahriari and Farkas<br />

fistula is closed with pledgeted nonabsorbable mon<strong>of</strong>ilament sutures from within<br />

the aneurysm sac. No attempts should be made to separate the IVC from the aorta<br />

at the fistula, as this maneuver may result in lethal hemorrhage.<br />

Ruptured mycotic aneurysms are rare causes <strong>of</strong> intra-abdominal aortic<br />

rupture. They are usually secondary to infectious endocarditis or Staphylococcal<br />

bacteremia in the presence <strong>of</strong> severe atherosclerotic disease. Depending on the<br />

degree <strong>of</strong> contamination <strong>of</strong> the aneurysm bed, we recommend complete resection<br />

<strong>of</strong> the aneurysm, aggressive debridement <strong>of</strong> the aneurysm bed, and either<br />

the use <strong>of</strong> a cryo-preserved homograft or the performance <strong>of</strong> an extra- anatomical<br />

axillo-bi-femoral bypass. Autografting using the patient’s bilateral femoral<br />

veins has also been described and is favored in some institutions. Intraoperatively,<br />

the aneurysm and its bed should be sampled for culture and microbiologic<br />

analysis. We recommend buttressing the retroperitoneal area with omentum<br />

to lessen the risk <strong>of</strong> aortic stump blowout, anastomotic rupture, or pseudoaneurysm<br />

formation.<br />

P<br />

F<br />

F<br />

r<br />

i<br />

Figure 11 Endovascular repair <strong>of</strong> ruptured abdominal aortic aneurysm (Montefiore<br />

technique). See text.

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