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Related Experiment Videos

An experimental study of eight current arterial prostheses.

S R Mathisen, H D Wu, L R Sauvage

    Journal of Vascular Surgery
    |July 1, 1986
    PubMed
    Summary

    Comparing eight arterial prostheses in dogs, knitted grafts demonstrated superior surgical handling and healing compared to Gore-Tex and woven types. Preclotting efficiency varied significantly among the tested vascular grafts.

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    Area of Science:

    • Biomaterials Science
    • Cardiovascular Surgery
    • Medical Device Engineering

    Background:

    • Arterial prostheses are crucial for vascular reconstruction.
    • Evaluating the performance of different graft materials and constructions is essential for improving patient outcomes.
    • Current prostheses vary in material, porosity, and design, influencing their clinical efficacy.

    Purpose of the Study:

    • To compare the preclotting efficiency, surgical handling, and healing characteristics of eight different arterial prostheses.
    • To identify potential advantages of specific graft types for thoracic aorta implantation.
    • To provide data for selecting optimal vascular grafts in surgical practice.

    Main Methods:

    • Eight distinct arterial prostheses (Gore-Tex, DeBakey Woven, Cooley Woven, Meadox Woven Double Velour, Cooley Knitted Double Velour, Microvel, Vasculour II, Bionit II) were implanted in the descending thoracic aorta of mongrel dogs.

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  • Prostheses were evaluated based on preclotting requirements, ease of surgical handling, and tissue healing.
  • Five series of implantations were performed on heparinized subjects, totaling 40 procedures.

    • Main Results:

    • Gore-Tex and woven grafts (DeBakey, Cooley) showed high initial imperviousness; others required preclotting (2-4 steps).
    • Knitted prostheses exhibited superior surgical handling compared to woven and Gore-Tex grafts.
    • Meadox Woven Double Velour offered better conformability but showed more fraying; healing was most advanced in knitted and woven grafts, outperforming Gore-Tex.

    Conclusions:

    • Knitted arterial prostheses demonstrate significant advantages in surgical handling and tissue healing over Gore-Tex and some woven grafts.
    • Graft material and construction critically influence preclotting needs, intraoperative performance, and long-term healing.
    • The findings suggest that knitted vascular grafts may offer superior outcomes for thoracic aorta replacement.