| Abstract: | Abstract: We used the laser Doppler method to study the difference in gastric mucosal blood flow changes between peptic ulcer (65 cases) and artificial ulcer caused by endoscopic mucosal resection (35 cases) during their respective healing processes. At each endoscopic ulcer stage, blood flow at the ulcer margin and that in the surrounding mucosa were measured. In the artificial ulcer, which heals easily, blood flow at the ulcer margin was still high at the scarring stage as compared with that in the corresponding area of a peptic ulcer, which is prone to relapse. Moreover, the blood flow ratio (blood flow at the ulcer margin/blood flow in the surrounding mucosa) at the S1 stage in artificial ulcers was significantly higher than that in peptic ulcers (p<0.05). These results suggest that blood flow in the SI stage is an important aspect of ulcer healing and relapse. |
