Source: Annual Congress 2008 - Lung and bone marrow transplantation: miscellaneous
Disease area: Interstitial lung diseases

Abstract

Objective: To compare trachea autotransplantation vs knitted dacron and woven collagen prosthesis reinforced with surgical wire and silicon for trachea replacement.
Methods: 12 dogs were operated on: Group I (n=6) 6 rings cervical trachea segment autotransplantation. Group II (n=6) 6 rings cervical trachea segment replaced with the prosthesis. All anastomosis running prolene 5-0. Tracheoscopy performed immediately after surgery, every week 1st post-op month, every 2 weeks the next 5 months. Balloon dilation if > 50%. tracheo-prosthetic junction stenosis. Study period 6 months. Microscopy: H-E, Masson‘s stains. Statistical analysis: ANOVA, X2.
Results: All the dogs survived the surgery. Group I: 5 animals: trachea necrosis on 7^th post-op day, euthanized on day 10th. One dog did not presented necrosis and is alive. Group II: 1 animal 60% tracheo-prosthetic junction stenosis on 4^th post-op week, it died during balloon dilation, 5 animals: 30%stenosis on 6^th post-op week. They developed 60% stenosis on 12^th post-op week, 1 died during balloon dilation and 2 died a week later due to pneumonia, 2 dogs left 30% stenosis. On 30^th post-op week, stenosis relapsed, with 65% stenosis, 1 dog was euthanized, and the remaining was treated with balloon dilation, leaving 10% stenosis. Group II dogs, prosthesis was surrounded by fibrosis, tracheo-prosthetic junction developed inflammatory stenosis with fibrotic tissue formation.
Conclusions: Revascularization is fundamental for autotransplantation. Tracheo-prosthesis junction stenosis is due to foreign body reaction which is treated succesfully with balloon dilation, and could be improved with healing modulators or laser.

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J. A. Santibanez, J. R. Olmos, R. Jasso, J. Villalba, A. Rey, D. Perez, M. Gaxiola, A. Sotres, M. Baltazares, I. A. Gonzalez (Mexico, D.F., Mexico). Canine trachea replacement with knitted dacron and woven collagen prosthesis reinforced with surgical wire and silicon. Eur Respir J 2008; 32: Suppl. 52, 1636

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