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Femoral vein obturator bypass revascularization in groin infectious bleeding: two case reports and review of the literature
© Busch et al.; licensee BioMed Central Ltd. 2013
Received: 27 June 2012
Accepted: 24 January 2013
Published: 18 March 2013
Groin infections resulting in arterial bleeding due to bacterial vessel destruction are a severe challenge in vascular surgery. Patients with them most often present as emergencies and therefore need individualized reconstruction solutions.
Case 1 is a 67-year-old man with infectious bleeding after an autologous reconstruction of the femoral bifurcation with greater saphenous vein due to infection of a bovine pericard patch after thrombendarterectomy. Case 2 is a 35-year-old male drug addict and had severe femoral bleeding and infection after repeated intravenous and intra-arterial substance abuse. Both patients were treated with an autologous obturator bypass of the superficial femoral vein. We review the current literature and highlight our therapeutic concept of this clinical entity.
Treatment should include systemic antibiotic medication, surgical control of the infectious site, revascularization and soft tissue repair. An extra-anatomical obturator bypass with autologous superficial femoral vein should be considered as the safest revascularization procedure in infections caused by highly pathogenic bacteria.
Severe groin infections with inguinal blood vessel destruction may be caused by intravenous substance abuse, radiation scars, transfemoral interventions and, most commonly, infection of prosthetic vascular implants (incidence 2% to 18%)[1–4]. Complications include life-threatening bleeding, acute ischemia, septic embolization and systemic sepsis. Finding the appropriate strategy for each patient remains an individual challenge.
An obturator bypass using the ipsilateral superficial femoral vein to bypass the infected area extra-anatomically from the common iliac artery to the distal femoral artery was performed in both cases (Figures 2A and2B). Venous graft was harvested from the non-infectious part of the thigh to the venous confluence. This procedure was accompanied by systemic antibiotic therapy, then by local debridements and finally by mesh graft augmentation. Physical therapy and 30mg enoxaparin daily were administered from day 1 after the operation. The patients were dismissed in good health and able to walk with regression of initial lymphatic swelling. Both bypasses remained patent during follow-up at 32 and 12 months in cases 1 and 2, respectively (Figures 1B and1D). Venous function was not hindered clinically, with normal thigh circumference.
Though challenging, individual primary revascularization procedures, especially in young patients, should be considered the first treatment option because of high amputation rates after double or triple ligation (up to 27%) or severe claudication[4–7]. Without complete graft removal, reinfection occurs in about one-third of cases. Insufficient soft-tissue coverage at the infection site weighs in favor of an extra-anatomic bypass configuration.
The obturator bypass, with primary patency rates of up to 76% after 2 years, has proven to be feasible in a few small clinical series with a considerable risk of late prosthetic graft infection remaining[1, 3, 4, 9–11]. Therefore, evidence is increasing for the superiority of autologous revascularization with femoral veins to allograft, xenograft or synthetic materials, as well as greater saphenous vein (complete erosion despite antibiotic therapy in case 1) in terms of infection resistance, patency rates and availability[12–15].
To the best of our best knowledge, investigators of only one clinical series have reported the use of obturator bypass fashioned from autologous superficial femoral vein at infection sites. We therefore want to highlight in our case presentations its potential benefits in vascular groin infections, with a crucial focus on the underlying bacteriology, such as MRSA and Group B Streptococcus in this report. With proven susceptibility of several native and prosthetic materials to MRSA and rising clinical incidence, femoral vein obturator bypass is the safest revascularization procedure with the best long-term results.
The extra-anatomic obturator bypass with femoral vein is a safe and feasible revascularization procedure in patients with severe groin infections and highly pathogenic bacteria such as MRSA, Pseudomonas aeruginosa and Group B Streptococcus. It should be considered the primary treatment option by vascular surgeons confronted with this problem, especially in young patients.
Written informed consent was obtained from the patients for publication of this case report and any accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal.
This publication was funded by the German Research Foundation (DFG) and the University of Wuerzburg in the funding programme Open Access Publishing.
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