General Thoracic and Cardiovascular Surgery

, Volume 58, Issue 10, pp 511–515 | Cite as

Advantage of absorbable suture material for pulmonary artery ligation

  • Takahiro Mimae
  • Tsuneo Hirayasu
  • Keiko B. Kimura
  • Akihiko Ito
  • Yoshihiro Miyata
  • Morihito Okada
Original Article



The applicability of absorbable materials as ligatures of pulmonary vessels has not been described. The present study compares tissue reactions around sites of pulmonary arteries ligated with absorbable material (Vicryl) and with nonabsorbable material (silk).


Beagle dogs underwent thoracotomy and the pulmonary artery branches were ligated with silk or Vicryl under general anesthesia. The ligated arterial tissues were obtained at 4 and 8 weeks after thoracotomy and processed for pathological analysis.


The arteries ligated using Vicryl or silk were clinically completely sealed at 4 weeks after ligation. More inflammation and granuloma were evident at tissues surrounding ligations made with silk than with Vicryl at 8 weeks. Hyperplasia of the arterial intima continued at 8 weeks after ligation with both Vicryl and silk sutures, although some hyperplasia similar to that in nonligated arterial intima appeared at 4 weeks after ligation.


Less inflammation and granuloma are caused at arterial tissues around ligations accomplished with absorbable Vicryl than those done with nonabsorbable silk sutures, although both are equally effective. Absorbable sutures might be suitable for ligating pulmonary arteries.

Key words

Pulmonary artery Suture material Absorbable material Inflammation Granuloma 


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Copyright information

© The Japanese Association for Thoracic Surgery 2010

Authors and Affiliations

  • Takahiro Mimae
    • 1
    • 3
  • Tsuneo Hirayasu
    • 2
  • Keiko B. Kimura
    • 3
  • Akihiko Ito
    • 3
  • Yoshihiro Miyata
    • 1
  • Morihito Okada
    • 1
  1. 1.Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Graduate School of Biomedical SciencesHiroshima UniversityHiroshimaJapan
  2. 2.Department of General Thoracic SurgeryNational Okinawa HospitalOkinawaJapan
  3. 3.Division of Molecular Pathology, Department of Cancer Biology, Institute of Medical ScienceUniversity of TokyoTokyoJapan

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