Published online Sep 15, 1996. doi: 10.3748/wjg.v2.iSuppl1.86
Revised: January 31, 1996
Accepted: August 1, 1996
Published online: September 15, 1996
AIM: By using Electrogastrogram, we checked total 68 patients with duodenal ulcer.
RESULTS: The electrical frequency in patients with duodenal ulcer showed no obvious change after meal (P > 0.05); In active duodenal ulcer with gastritis the frequency is much higher; In chronic duodenal ulcer the frequency is relatively lower. The Electrogastrogram amplitude and waveform had different characteristics in different kinds of duodenal ulcer. The active duodenal ulcer showed an irregular waveform and high amplitude wave. The electrogastrogram amplitude in 56% of patients was increased obviously after meal (P < 0.001); The Electrogastrogram of duodenal ulcer with gastritis had low wave in 59% of patients and the Electrogastrogram amplitude was increased after meal (P < 0.001); And in chronic duodenal ulcer the electrogastrogram all showed low wave before and after meal.
CONCLUSIONS: (1) The Electrogastrogram showed the following 2 characters: the frequency is above 3.5 cpm and irregular and the amplitude is high (> 200 μV); and (2) a frequency above 3.5 cpm with low wave (< 100 μV) can be diagnosed as duodenal ulcer in combination with clinical manifestation.