The effect of laser photocoagulation on the gastric mucosa and bleeding gastric lesions: an experimental study
Related Experiment Videos
Abstract:
An argon ion laser beam was tested experimentally with regard to its histological effect on and penetration of the gastric mucosa of the rat and man and its ability to induce haemostasis in traumatically produced gastric lesions and transected small blood vessels. Localized laser photocoagulation for periods of up to 5 minutes at 1 watt produced a coagulative necrosis of the gastric mucosa and half of the muscularis propria, but transmural necrosis required prolonged exposure. Laser phototherapy markedly reduced the bleeding time in experimental ulcers and small blood vessels, provided the superficial blood could be adequately dispersed from the direct beam of the laser.
Related Concept Videos
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs
Gastric Emptying
Gastric Motility
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...
Gastric Phase of Digestion
When food enters the stomach, it stretches the stomach walls and activates stretch receptors. This triggers local reflexes of the enteric nervous system, mediated through the myenteric plexus. These...
Bleeding in Fresh Concrete
Bleeding can cause several issues in the concrete structure. Sometimes, the rising water gets trapped beneath large aggregate...
Experimental Determination of Chemical Formula