Laser-Assisted Vasovasostomy in the Rat

Abstract

A comparative study was undertaken to investigate the Nd:YAG and CO₂ laser systems for laser-assisted vasovasostomies (LAVs). In 32 rats 64 vasovasostomies were performed, either conventionally sutured (CSV) or laser-welded (LAV-CO₂ and LAV-Nd:YAG). Postoperative investigations included patency tests, gross examination, light and electron microscopy. The highest rate of sperm granulomas (50%) and the lowest patency rate (50%) was seen in the LAV-Nd:YAG group. LAV-CO₂ showed the lowest rate of sperm granulomas (12.5%) and had a patency rate (82%) which was comparable to that of CSV (88%). Laser-assisted vas anastomosis is time saving and technically easy to perform. Contrary to microvascular anastomoses, where both laser types offer the same results, vas anastomosis is better done using a CO₂ laser system.

Stented Laser-Welded Vasovasostomy in the Rat: Comparison of Nd:YAG and CO2Lasers

“…4 -6 Laser-assisted vasovasostomy has proven to be faster than conventional microsurgery, but nevertheless requires at least three stay sutures to keep the lumen open while the walls of the vas are laser-welded. 7 The present study was undertaken to investigate the use of a stent, in combination with laser welding, for reconstructional vasovasostomy, thus obviating completely the application of sutures. In addition, carbon dioxide-and Neodymium (Nd): YAG laser systems were compared.…”