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Updated: Oct 5, 2026

Microsurgical Venous Pouch Arterial-Bifurcation Aneurysms in the Rabbit Model: Technical Aspects
07:34

Microsurgical Venous Pouch Arterial-Bifurcation Aneurysms in the Rabbit Model: Technical Aspects

Published on: May 11, 2011

[Autovenous bypass in situ in distal occlusions of the arteries]

M D Dibirov, B S Briskin, D G Kirtadze

    Vestnik Khirurgii Imeni I. I. Grekova
    |August 11, 2001
    PubMed

    Insights

    Vascular surgery outcomes improve by managing venous collaterals. Leaving one to two small collaterals did not affect bypass function or hemodynamics, leading to successful patient discharge.

    Area of Science:

    • Vascular Surgery
    • Hemodynamics
    • Bypass Grafting

    Background:

    • Assessing the impact of venous collaterals on bypass graft patency and patient outcomes is crucial in vascular surgery.
    • Understanding the optimal management of distal bed conditions and collateral blood flow is essential for successful bypass procedures.

    Observation:

    • In patients with suboptimal distal beds, the management of functioning venous collaterals (diameter < 1 mm) varied based on blood flow volume.
    • Leaving one to two collaterals did not significantly alter bypass blood flow volume, linear velocity, or hemodynamic parameters.

    Findings:

    • A total of 78 patients (91%) were discharged with functioning bypasses and reduced ischemia.
    • One year post-surgery, 14% of patients experienced bypass thrombosis, with collateral dilation necessitating intervention in some cases.
    • Prognostically, distal anastomosis blood flow below 100 ml/min is identified as a critical factor.

    Implications:

    • The findings suggest that careful management of venous collaterals can positively influence bypass surgery success rates.
    • Identifying critical blood flow thresholds aids in predicting and preventing bypass failure.
    • Further research into optimizing collateral management strategies may enhance long-term graft survival.

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