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Ann Thorac Surg 2000;70:1886-1890
© 2000 The Society of Thoracic Surgeons

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Original article: general thoracic

Experimental tracheal reconstruction with a rotated right stem bronchus

^a Department of Surgery, Division of Chest Surgery, St. Marianna University School of Medicine, Kawasaki, Japan

Accepted for publication May 3, 2000.

Address reprint requests to Dr Osada, Department of Surgery, Division of Chest Surgery, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Japan 216-8511
e-mail: h2osada{at}marianna-u.ac.jp

Background. To reconstruct a longer tracheal defect, a safe method other than end-to-end anastomosis is necessary.

Methods. Nine mongrel dogs underwent right thoracotomy. The lobes of the right lung other than the apical lobe were resected, keeping the bronchi in place to be manipulated to extend the right stem bronchial conduit. The trachea was resected for a 10-cartilage-ring length. The modified right stem bronchus was then brought into the mediastinum by rotation in the frontal plane. An end-to-end anastomosis was made. The right apical lobe, once separated, was then reanastomosed end-to-side. Ciliary transport was studied.

Results. Eight of the 9 dogs tolerated the surgical procedure well, and the reanastomosed right apical lobe remained well expanded for 1 year or more postoperatively. The inverted segment did not show any cranial ciliary transport movement.

Conclusions. A large tracheal defect more than 10 rings in length can be reconstructed using a rotated right stem bronchus with the right apical lobe reanastomosed. The inverted bronchial segment loses its cranial ciliary transport movement.

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