[Effect of endoscopic hydrothermo- and laser coagulation on the XXXX stomach wall in vivo].

@entity1 @entity11534 @entity5 @entity39
Effect of thermic and laser energy applied onto @entity1 in vivo gastric wall has not yet been reported in literature. In our study we evaluated the maximum amount of energy not harming the @entity1 as well as principles for secure and sufficient therapy. In 8 @entity1 hospitalized for gastric resection we applied vaporization by laser- and hydrothermosounds in this part of the stomach which should be resected. Endoscopic pictures were taken. We used a NdYAG laser (maximum performance 70 W, time of application 1-3 s) and hydrothermosounds (maximum performance 170 W, time of application 1-3 s). The stomach was resected 3-8 days following application. Comparing laser- and hydrothermosounds marks we observed a bigger area of @entity39 at hydrothermosounds marks using the same amount of energy. In histological investigation correlation between depth and diameter of @entity39 was found. After the same application time both depth and diameter of @entity39 were bigger by hydrothermosounds than by laser. Lesions reached serosa at the maximum time of application of 3 s. @entity11534 itself did not appear. Endoscopic treatment of tissue lesion by laser and thermic irradiation (vaporization of bleeding polyp pedicles, treatment of @entity5 ) is secure using the maximum energy mentioned above. @entity11534 did not appear. Bleeding lesions must be treated by higher energy because of absorption of energy by escaped blood.
