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目的探讨胃癌患者胃电生理变化与胃排空之间的关系。方法对65例胃癌患者(胃癌组)及30名健康者(对照组)分别进行胃电图检测及核素胃排空试验。结果胃癌组正常慢波节律百分比明显低于对照组,而主频不稳定系数明显高于对照组(均P<0.05);胃癌组胃排空延迟率为36.9%(24/65),明显高于对照组的13.3%(26/30)(P<0.05);胃癌组胃排空率与正常慢波节律百分比显著相关(r2=0.32,P<0.001)。结论部分胃癌患者存在胃电节律紊乱,主要表现为正常慢波节律百分比下降及主频不稳定系数明显增高,相应地影响胃排空。
Objective To investigate the relationship between gastric electrophysiological changes and gastric emptying in patients with gastric cancer. Methods Totally 65 gastric cancer patients (gastric cancer group) and 30 healthy subjects (control group) were tested for gastric electrogastrogram and radionuclide gastric emptying. Results The percentage of normal slow wave rhythm in gastric cancer group was significantly lower than that in control group, while the frequency instability coefficient was significantly higher than that in control group (all P <0.05). The gastric emptying delay rate was 36.9% (24/65) in gastric cancer group, 13.3% (26/30) in the control group (P <0.05). The gastric emptying rate was significantly correlated with the percentage of normal slow wave rhythm (r2 = 0.32, P <0.001). Conclusions Some patients with gastric cancer have gastric electrical rhythm disorder, which is mainly manifested as the decrease of the percentage of normal slow wave rhythm and the instability coefficient of mains frequency, and accordingly, the gastric emptying.