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Basic interrupted versus continuous suturing techniques in bronchial anastomosis following sleeve lobectomy in dogs

Ahmet Sami Bayram^a,_*, Mehmet Muharrem Erol^c, Hakan Salc^b, Özgür Özyiit^b, Sacit Görgül^b, Cengiz Gebitekin^a

^a Department of Thoracic Surgery, Uludag University, School of Medicine, Bursa, Turkey
^b Department of Surgery, Uludag University, School of Veterinary Medicine, Bursa, Turkey
^c Department of Thoracic Surgery, Karadeniz Technical University, Trabzon, Turkey

Received 6 June 2007; received in revised form 13 August 2007; accepted 3 September 2007.

^_* Corresponding author. Address: Thoracic Surgery Department of the Medical Faculty of Uludag University, Gorukle-Bursa 16059, Turkey. Tel.: +90 224 2952211; fax: +90 224 4428698. (Email: asbayram2{at}yahoo.com).

Objective: Sleeve resection with or without lung resection is a valid conservative operation for patients with benign or malignant tumors; it enables the preservation of lung parenchyma. The aim of this prospective randomized study was to compare complications, operating time, and bronchial healing between the techniques of interrupted and continuous suturing for bronchial anastomosis in dogs. Methods: Twenty adult mongrel dogs each weighing 18–22 kg (average: 20 kg) were divided into two groups according to the anastomosis technique performed: group A, interrupted suturing and group B, continuous suturing. Each group comprised of 10 dogs. Following right thoracotomy, sleeve resection of the right cranial lobe was performed in all dogs. Basic interrupted sutures using 4/0 Vicryl (Ethicon, USA) were used in group A, and continuous sutures were used in group B. Results: The median anastomosis time was 15.2 min (range: 13–21 min) in group A and 9.6 min (range: 8–13 min) in group B. In all dogs, the anastomosis line was resected via right pneumonectomy for histopathological investigation 1 month after sleeve resection. Histopathological examination revealed that the healing of the anastomosis was not affected by the suturing technique applied. One dog from each group died on the fourth postoperative day; Fisher's exact test, p = 0.763. Conclusions: Our research revealed that the healing of the anastomosis was not affected by the suturing technique performed.

Key Words: Sleeve resection • Continuous suturing technique • Interrupted suturing technique