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. 2013 Mar;57(3):700-5.
doi: 10.1016/j.jvs.2012.09.049. Epub 2013 Jan 9.

Prosthetic graft infections involving the femoral artery

Jeffrey J Siracuse  1 , Prathima Nandivada, Kristina A Giles, Allen D Hamdan, Mark C Wyers, Elliot L Chaikof, Frank B Pomposelli, Marc L Schermerhorn
Affiliations

Prosthetic graft infections involving the femoral artery

Jeffrey J Siracuse et al. J Vasc Surg. 2013 Mar.

Abstract

Background: Prosthetic graft infection is a major complication of peripheral vascular surgery. We investigated the experience of a single institution over 10 years with bypass grafts involving the femoral artery to determine the incidence and risk factors for prosthetic graft infection.

Methods: A retrospective cohort single-institution review of prosthetic bypass grafts involving the femoral artery from 2001 to 2010 evaluated patient demographics, body mass index, comorbidities, indications, location of bypass, type of prosthetic material, case urgency, and previous ipsilateral bypass or percutaneous interventions and evaluated the incidence of graft infections, amputations, and mortality.

Results: There were 496 prosthetic grafts identified with a graft infection rate of 3.8% (n = 19) at a mean follow-up of 27 months. Multivariable analysis showed that redo bypass (hazard ratio [HR], 5.8; 95% confidence interval [CI], 2.2-15.0), active infection at the time of bypass (HR, 5.2; 95% CI, 1.9-14.2), female gender (HR, 4.5; 95% CI, 1.6-12.7), and diabetes mellitus (HR, 4.6; 95% CI, 1.5-14.3) were significant predictors of graft infection. Graft infection was predictive of major lower extremity amputation (HR, 9.8; 95% CI, 3.5-27.1), as was preoperative tissue loss (HR, 4.7; 95% CI, 1.8-11.9). Graft infection did not predict long-term mortality; however, chronic renal insufficiency (HR, 2.3; 95% CI, 1.6-3.4), tissue loss (HR, 1.4; 95% CI, 1.0-1.9), and active infection (HR, 2.3; 95% CI, 1.6-3.4) did. Infected grafts were removed 79% of the time. Staphylococcus epidermidis (37%) and methicillin-sensitive Staphylococcus aureus (26%) were the most common pathogens isolated.

Conclusions: Redo bypass, female gender, diabetes, and active infection at the time of bypass are associated with a higher risk for prosthetic graft infection and major extremity amputation but do not confer an increased risk of mortality. Autologous vein for lower extremity bypass and endovascular interventions should be considered when feasible in high-risk patients.

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Figures

Figure 1
Figure 1
Graft infection rate was 3.8% with a median time to presentation of 98 days post-operatively.
Figure 2
Figure 2
Graft infection predicts major amputation of the affected limb.
Figure 3
Figure 3
There is no significant difference in long-term survival between those with infected grafts and those without infected grafts.
See this image and copyright information in PMC

References

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