Abstract
A microcrystalline collagen hemostat (MCH) widely used in general surgery was tested in the control of bleeding from experimentally produced gastric ulcers. Five dogs had a gastrotomy and were given heparin. Using the standard "ulcer maker," three sets of three ulcers were made in the gastric mucosa of each animal. Blood from each ulcer was collected for a 5-min period to allow for stabilization of bleeding. MCH powder or slurry or no MCH was placed directly on one ulcer of each set in random order. The bleeding rate for the next 10 min was measured. Mean decrements in the bleeding rate for slurry MCH and dry MCH-treated ulcers were 87% and 81%, respectively, compared with 51% for controls, P less than 0.05. Twelve MCH-treated ulcers, but no control ulcer, stopped bleeding completely, P less than 0.01. Preliminary observations show that MCH slurry can be applied through an endoscope and may be hemostatically effective in man. MCH may have a role in the endoscopic control of gastrointestinal bleeding.
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