Gastric Tissue Interaction After Nd:YAG-Laser (1064 nm/1319 nm) Radiation from Serosa Surface

Abstract

Most investigations of laser interaction with gastric wall were performed from mucosa surface (1,6). As fare as we know only two experimental works dealt with outer laser interaction with stomach from serosa surface (4,5). The first was by Mimura from Japan and was performed with CO2 laser, the second was realised by Hunter from USA with argon laser. Both works were destined for new surgical technical access to open laser vagotomy. We continued in this domain but with Nd:YAG laser where we tested what changes this laser would cause in gastric wall and whether it could also be used for serornyolysis of lesser curve of the stomach. For our experiments we used 30 dogs of mixed rases and of weight from 10 to 14 kg. Middle upper laparatomy under general i.v. thiopenthal anaesthesia was performed with conventional scalpel. After the opening of the abdominal cavity we radiated with Nd:YAG laser beam anterior and posterior stomach wall near the lesser curve. Czechoslovak combined 1064 nm/ 1319 nm Nd: YAG laser was used (3). We verified various power outputs on both wavelengths and other changeables which could play some role in our investigation.