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The Journal of Thoracic and Cardiovascular Surgery, Vol 87, 439-444, Copyright © 1984 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Influence of bronchial circulation and corticosteroid therapy on bronchial anastomotic healing

KL Pinsker, FJ Veith, SL Kamholz, C Montefusco, E Emeson and JW Hagstrom

In order to assess the effect of revascularization on the healing of bronchial anastomoses in a canine model, we developed a microsurgical technique that permits the immediate reperfusion of the distal bronchial segment by a direct anastomosis of the bronchial artery to an intercostal artery. This technique was applied to dogs that underwent hilar stripping and bronchial transection and reanastomosis, and it prevented the development of ischemic bronchial damage. In addition, several groups of dogs that had undergone bronchial transection and reanastomosis and, in some cases, reestablishment of bronchial arterial circulation, were treated with 40 mg of prednisone daily for periods of 7 and 21 days. The animals treated with corticosteroids demonstrated a lesser degree of inflammatory damage to the bronchial anastomotic site than similar groups of untreated animals. These findings support the hypothesis that restoration of bronchial arterial blood flow at the time of lung transplantation can reduce anastomotic damage to the distal or donor bronchial component. Our results further suggest that corticosteroid therapy alone does not increase bronchial anastomotic damage, and, in fact, may reduce inflammation at the bronchial anastomotic site.

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