目的：厌食是儿科门诊特别是消化专科门诊中常见的主诉，小儿厌食可能与多种因素有关，该文通过对部分诊断为功能消化不良，伴有或不伴有厌食的病人进行体表胃电图监测，探讨胃电活动改变是否与厌食存在一定关系。方法：32例病人均有消化道症状，包括腹痛、腹胀、恶心、呕吐、反酸，呃逆、早饱等，根据有无厌食被分为厌食组(n=18)和非厌食组(n=14) ，所有病人进行餐前30 min，餐后120 min的体表胃电图检查，记录两组餐前餐后正常胃电主频，胃电节律过缓，胃电节律过快的百分比，主频不稳定系数，餐前/餐后主功率比。比较两组胃电图结果的各项参数。结果：①厌食组和非厌食组病人的胃电节律异常检出率分别为餐前77.8%（14/18）和78.6%（11/14），P>0.05，餐后77.8%（14/18）和57.1%（8/14）P>0.05； ②两组胃电过缓百分比分别为餐前31.6% (10.18~45.33)，48.9% (31.7~62.93)，P>0.05，餐后33.4% (12.95~62.17)，27.8% (7.4~48.1)，P>0.05； ③厌食组餐前餐后胃电节律过速的百分比高于非厌食组，6.2% (2.78~19.43)，0%(0~4.63)，P<0.01, 和14.8% (4.73~28.85)，1.9% (0~18.5)，P<0.05； ④两组餐前餐后主频不稳定系数差异均无显著性； ⑤两组餐后/餐前主功率比差异无显著性。结论：功能性消化不良患儿发生胃电节律紊乱的比例较高，功能性消化不良伴厌食的患儿餐前餐后胃电节律过速的百分比高于不伴厌食患儿，而以餐前更明显。

OBJECTIVE: To study the eletrogastrographic pattern in children diagnosed as functional dyspepsia (FD), with or without anorexia, and to investigate whether there is a link between the pattern of eletrogastrographic activity and anorexia. METHODS: Thirty-two children with FD and receiving eletrogastrography (EGG) examination were classified to two groups: anorexia group (n=18) and non-anorexia (n=14). EGG was performed for 30 minutes during fasting and for 120 minutes postprandially. EEG variables measured included the percentage of normal gastric rhythm, the percentage of bradygastria and tachygastria, EGG domain frequency and its instability coefficient, and the fed-to-fasting ratio of the EEG domain power. RESULTS: The percentage of abnormal gastric rhythm before a meal in the anorexia and non-anorexia groups was 77.8% and 78.6 % respectively (P>0.05); and that was 77.8% and 57.1% respectively after a meal (P>0.05). The fasting (31.6% vs 48.9%) and postprandial bradygastria frequencies (33.4 % vs 27.8 %) between the two groups were not significantly different. However, the percentage of tachygastria in the anorexia group was significantly higher than that in the non-anorexia group (fasting: 6.2% vs 0, P<0.01; postprandial: 14.8 % vs 1.9%, P<0.05). There were no significant differences in the instability coefficient of the dominant frequency and the fed-to-fasting ratio of the EEG domain power between the two groups both during fasting and after a meal. CONCLUSIONS: EGG abnormalities were associated with pediatric FD. Tachygastria occurred more often in the anorexia group than in the non anorexia group.