Vascular prostheses of expanded polytetrafluoroethylene were tested as microvascular synthetic substitutes in a carotid bypass model in rats. Poor patency rates (28%) were obtained with this material when compared with the rates obtained in homologous arterial grafts (100%). It is concluded that expanded polytetrafluoroethylene is unacceptable for use as a 1 mm vascular conduit.
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Young et al. (1981) studied this question.
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