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  • Title: [Venous microanastomoses by extraluminal cuff versus standard technique].
    Author: Pelayo Salas A, Perez Ruiz L, Marco Estarreado L, Guidolin D, Garcés Guallart MD, Gomez Quiles L, Ros Lopez S.
    Journal: Minerva Chir; 2004 Feb; 59(1):53-9. PubMed ID: 15111833.
    Abstract:
    AIM: Venous microanastomoses are more difficult to carry out in comparison with the arterial ones, because of the characteristics of the vascular wall. The suture with loose stitches is the usual surgical technique, but it has 2 disadvantages: a long time of execution and the presence of foreign material in the anastomosis. To avoid these complications, we an extraluminal silicone cuff has been used. METHODS: We performed 70 microanastomoses on the internal jugular vein of Sprague-Dawley rats with these 2 techniques, estimating the immediate and late permeability and postoperative complications. Moreover, a histological study of all the anastomoses was carried out on the 15th day and after 1 mo from the intervention. RESULTS: The mean time requested to perform the microanastomosis is significatively shorter when using the extraluminal cuff. The late permeability with standard suture is 97% and 77% with the cuff. The number of complications with standard suture is significatively lower than with cuff, where rates of 20% of dehiscence and 14% of trombosis were observed. The histological study showed a poor alteration of the vascular wall, with important subendothelial hypertrophy on cuff microanastomosis and a great permanent histopatologic alteration if the standard technique had been used. CONCLUSIONS: The suture with loose stiches is a very good technique to use for this type of microanastomosis, even if the extraluminal cuff can be used in microanastomosis of a free graft or when it is necessary to perform more than 1 microanastomosis.
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