RESUMO
<p><b>OBJECTIVE</b>To investigate the efficacy and safety of gastrointestinal pacemaker in treatment of gastric dynamic disorders.</p><p><b>METHODS</b>Sixty patients with more than two symptoms as postprandial fullness, epigastric pain,epigastric fullness, belch, nausea, hypercoria,anorexia,vomiting and at least for twelve weeks were divided into three groups randomly. Thirty patients were treated with gastrointestinal pacemaker for ten days(pace maker group); fifteen patients were treated with gastrointestinal placebo machine for ten days (control group); fifteen patients received treatment with cisapride 5 mg three times daily, thirty minutes before meal (cisapride group) for ten days. Electrogastrogram(EGG) was performed on before and after treatments, the mean frequency and mean amplitude of EGG, the clinical symptoms and adverse reactions were observed.</p><p><b>RESULTS</b>Total efficacy of pace maker group, control group and cisapride group was 90.0%, 46.6% and 86.7%, respectively. The score of symptoms was significantly decreased after treatment with gastrointestinal pacemaker and cisapride (P<0.05). Before and after meal EGG exam showed that average frequency was reversed to normal level after treatment with gastrointestinal pacemaker.</p><p><b>CONCLUSION</b>Gastrointestinal pacemaking can relieve symptoms and improve the average frequency of EGG in patients with gastric dynamic disorders.</p>