Tracheal transplant with a prefabricated microsurgical flap

Authors

  • Alexan Icibaci MD,

    Corresponding author
    1. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, “Centro Integrado de Estudos de Deformidades da Face” (Integrated Center for the Study of Facial Deformities – CIEDEF), University Hospital, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
    • Rua Luis Dias da Costa, 680, Jardim Santana, 14403-064, Franca, SP, Brazil
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  • Francisco Veríssimo de Mello-Filho MD, PhD

    1. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, “Centro Integrado de Estudos de Deformidades da Face” (Integrated Center for the Study of Facial Deformities – CIEDEF), University Hospital, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
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Abstract

Objective:

To test the viability of a tracheal autotransplant, with an original technique using a prefabricated flap from a complete tracheal neovascularized segment (CTNVS) of the sternohyoid muscle anastomosed by a microsurgical technique.

Study Design:

An experimental study using dogs as an animal model.

Methods:

Ten mongrel dogs weighing 23 to 40 kg were divided into two groups: group I (control), five animals submitted to autotransplant of the CTNVS without a microsurgical vascular anastomosis; and group II, five dogs submitted to autotransplant of the CTNVS with a microsurgical vascular anastomosis.

Results:

All group I dogs developed respiratory insufficiency and died because of necrosis and stenosis of the autotransplanted CTNVS, whereas all group II dogs completed a minimum period of 90 days of observation without any clinical changes. Macro- and microscopic analysis revealed intact tracheal structures.

Conclusions:

The present clinical and morphological findings demonstrate that the CTNVS autotransplant is viable, when a microsurgical vascular anastomosis is used. Laryngoscope, 2009

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