title: Laser welding of venotomies.
abstract: We investigated the histologic and biochemical effects of carbon dioxide and neodymium (Nd)-YAG laser welding on the healing of venotomies. Ten canine femoral venotomies 2 cm in length were approximated and welded with 10 600-nm wavelength, 1-W power over 20 to 25 s for CO2 laser, and 1060-nm wavelength, 1-W power over 30 to 40 s for Nd-YAG laser. On removal at one to three weeks, all veins (4/4 welded by CO2 and 6/6 by Nd-YAG) were patent without hematomas. Histologic and biochemical analyses of the venous tissues demonstrated active healing at the venotomy sites. We conclude that the CO2 and Nd-YAG lasers can be used successfully to weld venotomies and may provide an alternative to conventional suture techniques for repair of vascular lesions.
mesh_terms: D000818:Animals; D002245:Carbon Dioxide; D004285:Dogs; D005069:Evaluation Studies as Topic; D006801:Humans; D053685:Laser Therapy; D014680:Veins / Q000033:anatomy & histology / Q000601:surgery*; D014945:Wound Healing
chemical_list: D002245:Carbon Dioxide