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  • Title: The latissimus dorsi muscle flap is useful for the repair of tracheal defects--an experimental study.
    Author: Fujita H, Kawahara H, Hidaka M, Yoshimatsu H.
    Journal: Jpn J Surg; 1987 Mar; 17(2):91-8. PubMed ID: 3626209.
    Abstract:
    An experiment was designed to evaluate the limitations of the muscle flap method in treating various locations and sizes of tracheal defects. Five groups of dogs with several types of tracheal defects were prepared. Each defect was covered by the latissimus dorsi muscle flap. Defects of the tracheal membrane (posterior one-third of the tracheal wall) were successfully repaired by the muscle flap without stenosis, even if they extended to 10 rings in length or were situated at the carina. Defects in the posterior one-half of the trachea, up to 5 rings long, were repaired, with minimal stenosis. Defects of the posterior two-thirds, or anterior one-third of the trachea, resulted in marked stenosis following muscle flap repair. Tracheal movement as seen in the saver sheath type of tracheomalasia was observed when anterior support of the trachea was lost. On the other hand, the movement seen in the crescent type of tracheomalasia was observed when posterior support of the trachea was lost. We concluded that a defect of less than the posterior one-half of the trachea can be repaired by muscle flap, without inducing respiratory insufficiency. Therefore, muscle flap coverage for tracheal defects should be a useful technique in the combined resection of the tracheobronchial tree in cases of esophageal cancer.
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