功能性消化不良患者胃固体排空功能与其临床症状关系的研究

目的研究功能性消化不良运动障碍亚型患者胃固体排空功能与其临床症状的关系.方法对有4周以上腹胀、恶心、食欲减退等症状的患者进行症状评分,症状总积分≥9分,早饱、上腹胀至少具备一项且≥2分者,行胃镜、B超等有关检查,排除器质性病变后诊断为功能性消化不良运动障碍亚型.确诊患者服用标准试餐加固体小钡条,餐后5h透视确定胃内钡条排空情况;同时所观察患者服用西沙必利每次5mg、每日3次治疗,并于治疗2周及4周末复查.结果功能性消化不良运动障碍亚型中67.5%的患者有胃排空异常,女性与男性无显著性差异(P>0.05).治疗前胃排空正常者的症状积分为10.00±1.41,,胃排空异常者为11.70±2.28,二者相比无明显差异(P>0.05);治疗2周及4周后,胃排空正常者的症状积分分别为4.90±2.45、2.10±1.19,胃排空异常者则分别为7.00±3.12、4.20±2.39,与治疗前相比二者的症状总积分均明显降低,而且前者比后者的症状积分更低(P<0.05).治疗前患者的症状积分虽与胃内钡潴留无明显相关(r=0.078,P>0.05),但治疗后二者却有一定的相关性(r=0.47,P<0.05).结论功能性消化不良患者有明显的胃排空延迟;胃排空延迟确与运动障碍样症状有关,但与症状的严重程度无关;西沙必利治疗可使所有患者的症状及部分患者的胃排空不同程度改善.     

FD患者胃十二指肠运动功能的研究

目的通过胃窦十二指肠压力测定，研究功能性消化不良（ＦＤ）患者胃十二指肠的运动功能．方法ＦＤ患者２８例，健康人１３例．采用导管灌注技术测定胃窦和十二指肠的腔内压，消化间期测压３５ｈ，餐后测压１５ｈ．结果在消化间期，２８例ＦＤ中１３例未出现移行运动复合波（ＭＭＣ）３期，１３例健康人１例未出现ＭＭＣ３期，两者相比有显著性差异（Ｐ＜００５）；ＭＭＣ２期和３期收缩的平均频率、平均强度和动力指数，在ＦＤ患者和健康人间相比无差异（Ｐ＞００５）．ＦＤ患者餐后胃窦收缩的频率、强度和动力指数均低于健康对照组（Ｐ＜００５）．结论ＦＤ患者消化间期缺乏ＭＭＣ３期或ＭＭＣ３期延迟出现，餐后胃窦动力减低．     

Therapeutic effect of melatonin on pediatric functional dyspepsia: A pilot study

AIM: To study the effectiveness of melatonin vs placebo in children with functional dyspepsia(FD).METHODS: The study was conducted as a double blind, randomized, placebo controlled crossover trial. Subjects were aged 8-17 years and diagnosed with FD based on Rome Ⅲ criteria. All subjects had failed to respond to 4 wk of acid suppression. Subjects receive a continuous two weeks of placebo and a continuous two weeks of melatonin in an order blinded to the participant and the study team. A Global Clinical Score was obtained to assess changes in abdominal pain. Pain was self-reported to be worse(grade 1), no change(grade 2), moderate improvement(grade 3), good(grade 4; minimal pain and not interfering with daily activities), or excellent(grade 5; no pain), respectively. A positive clinical response was defined as a grade 3 or greater response. Subjects wore an actigraph to assess sleep during a one week baseline period and during each treatment period. Subjects' sleep latency and total sleep time were recorded throughout the duration of the study. RESULTS: Fourteen subjects were enrolled and 12 completed the study. One withdrew prior to starting both melatonin and placebo and the other before starting melatonin. A positive clinical response(grade 3-5) was achieved in 42% of subjects on melatonin vs 50% of subjects on placebo(NS). Effect size was calculated and revealed a Cohen's D of 0.343 which demonstrates a medium effect favoring placebo. A grade 4 or grade 5 response was seen in 4 patients on melatonin and 5 patients on placebo. Baseline sleep parameters were in the healthy range with the longest sleep latency being just over 20 min(mean 7.46 ± 8.53 min) and the shortest sleep duration just over 7 h(mean 10.09 ± 2.72 h). The mean latency did not differ between periods of treatment with melatonin as compared to placebo(4.48 ± 6.45 min vs 3.58 ± 4.24 min; NS). The mean sleep duration did not differ between periods of treatment with melatonin as compared to placebo(9.90 ± 3.53 h vs 9.41 ± 2.70 h; NS).CONCLUSION: Melatonin does not appear to have efficacy in relieving pain in unselected pediatric FD. Future studies should consider FD subtypes, pathophysiologic mechanisms, and baseline sleep disturbances.     

Treatment of functional dyspepsia with sertraline: A double-blind randomized placebo-controlled pilot study

AIM:To evaluate sertraline,a selective serotonin reuptake inhibitor in the treatment of patients with functional dyspepsia.METHODS:Consecutive tertiary hospital patients with a clinical diagnosis of functional dyspepsia(FD) according to the Rome Ⅱ criteria with a Hong Kong dyspepsia index(HKDI) of greater than 16 were recruited.Patients commenced enrolment prior to the inception of the Rome Ⅲ criteria for functional dyspepsia.All patients were ethnic Chinese,had a normal upper endoscopy and were Helicobacter pylori negative prior to enrolment.Study patients were randomized to receive sertraline 50 mg or placebo daily for 8 wk.HKDI symptom scores,quality of life,hospital anxiety and depression(HAD) scale and global symptom relief were evaluated before,during and after treatment.Adverse effects were monitored during and after treatment.RESULTS:A total of 193 patients were randomized in the intention to treat(ITT),and 150 patients were included in the per protocol(PP) analysis.In both the ITT and PP,there was no difference in the primary outcome of global dyspepsia symptoms between the sertraline and placebo groups at week 8.In the ITT analysis,98 and 95 patients were randomized to the sertraline and placebo groups respectively.A total of 43 patients withdrew from the study(22.3%) by week 8,with 23 of the 24 drop-outs in the sertraline group occurring prior to week 4(95.8%).In contrast,in the placebo arm,11 of 19 patients dropped out by week 4(57.9%).Utilizing the last response carried forward to account for the drop-outs,there were no differences between the sertraline and placebo groups at baseline in terms of the HKDI,HKDI 26.08 ± 6.19 vs 26.70 ± 5.89,P = 0.433;and at week 8,HKDI 22.41 ± 6.36 vs 23.25 ± 7.30,P = 0.352 respectively.In the PP analysis,74 and 76 patients were randomized to the sertraline and placebo groups respectively.At baseline,there were no statistically significant differences between the sertraline and placebo groups,HKDI 25.83 ± 6.313 vs 27.19 ± 5.929 respectively,P = 0.233;however by week 8,patients in the sertraline group demonstrated a statistically significant difference in their Hong Kong Dyspepsia Index compared to placebo,HKDI 20.53 ± 6.917 vs 23.34 ± 7.199,P = 0.02,respectively).There was also no statistically significant difference in overall quality of life measures or the HAD scale related to treatment in either the ITT or PP analysis at week 8.CONCLUSION:This pilot study,the first to examine sertraline,a selective serotonin reuptake inhibitor,for the management of FD,did not find that it was superior to placebo.     

Prevalence of acid reflux in functional dyspepsia and its association with symptom profile

AIM: A subset of functional dyspepsia patients respond to acid suppressive therapy, but the prevalence of non-erosive reflux disease in functional dyspepsia and its relevance to symptoms have never been established. The aim of the present study was to study 24 hour pH monitoring in consecutive functional dyspepsia patients. METHODS: A total of 247 patients with dyspeptic symptoms (166 women, mean age 44 (SEM 1) year), with a negative upper gastrointestinal endoscopy and without dominant symptoms of heartburn participated in the study. In all patients, the severity of dyspeptic symptoms and the presence of heartburn was assessed by a questionnaire and a 24 hour oesophageal pH monitoring study was performed. All patients underwent a gastric emptying breath test and in 113 a gastric barostat study was performed. RESULTS: Abnormal pH monitoring (acid exposure >5% of time) was found in 58 patients (23%). Of 21 patients with a positive heartburn questionnaire, 76% had pathological pH monitoring, while this was the case in only 18.5% of patients with a negative heartburn questionnaire. Demographic characteristics and the prevalence of other pathophysiological mechanisms did not differ between heartburn negative patients with normal or abnormal acid exposure. Pathological acid exposure in heartburn negative patients was associated with the presence of epigastric pain (65 v 84%, p<0.005) and of moderate or severe pain (48 v 69%, p = 0.005). CONCLUSION: Pathological oesophageal acid exposure is only present in a subset of heartburn negative functional dyspepsia patients, which are characterised by a higher prevalence of epigastric pain.     

有精神症状的功能性消化不良患者血浆obestatin、ghrelin水平的变化及其与精神症状的相关性

[目的]探讨有精神症状的功能性消化不良(functional dyspepsia,FD)患者的肥胖抑制素(obestatin)及胃促生长素(ghrelin)的水平变化及其与焦虑/抑郁状态的相关性。[方法]采用ELISA法测定41例伴有精神症状的FD患者(FD组)和40例健康体检者(对照组)的血浆obestatin和ghrelin水平。[结果]FD组血浆obestatin水平较对照组明显升高(P0.05);FD组血浆ghrelin水平较对照组明显降低(P0.01);血浆obestatin水平与HAMA及HAMD评分均呈正相关(r=0.131,P0.05;r=0.106,P0.05);血浆ghrelin水平与HAMA及HAMD评分均呈负相关(r=-0.428,P0.01;r=-0.462,P0.01)。[结论]有精神症状的FD患者的血浆obestatin水平高于对照组,且与焦虑/抑郁状态呈正相关;ghrelin水平低于对照组,且与焦虑/抑郁状态呈负相关。     

Gastrointestinal symptoms and associated factors in Chinese patients with functional dyspepsia

AIM:To study the evolution of gastrointestinal symptoms and associated factors in Chinese patients with functional dyspepsia(FD).METHODS:From June 2008 to November 2009,a total of 1049 patients with FD(65.3%female,mean age42.80±11.64 years)who visited the departments of gastroenterology in Wuhan,Beijing,Shanghai,Guangzhou,and Xi’an,China were referred for this study.All of the patients fulfilled the RomeⅢcriteria for FD.Baseline demographic data,dyspepsia symptoms,anxiety,depression,sleep disorder,and drug treatment were assessed using self-report questionnaires.Patients completed questionnaires at baseline and after1,3,6 and 12 mo follow-up.Comparison of dyspepsia symptoms between baseline and after follow-up was explored using multivariate analysis of variance of repeated measuring.Multiple linear regression was done to examine factors associated with outcome,both longitudinally and horizontally.RESULTS:Nine hundred and forty-three patients(89.9%of the original population)completed all four follow-ups.The average duration of follow-up was12.24±0.59 mo.During 1-year follow-up,the mean dyspeptic symptom score(DSS)in FD patients showed a significant gradually reduced trend(P<0.001),and similar differences were found for all individual symptoms(P<0.001).Multiple linear regression analysis showed that sex(P<0.001),anxiety(P=0.018),sleep disorder at 1-year follow-up(P=0.019),weight loss(P<0.001),consulting a physician(P<0.001),and prokinetic use during 1-year follow-up(P=0.035)were horizontally associated with DSS at 1-year followup.No relationship was found longitudinally between DSS at 1-year follow-up and patient characteristics at baseline.CONCLUSION:Female sex,anxiety,and sleep disorder,weight loss,consulting a physician and prokinetic use during 1-year follow-up were associated with outcome of FD.     

Effect of fluoxetine on symptoms and gastric dysrhythmia in patients with functional dyspepsia

BACKGROUND/AIMS: Although antidepressants have been used for decades in treating patients with functional abdominal syndromes, how they influence gastrointestinal motility remains unclear. We aimed to assess the role of depression in functional dyspepsia, and the effect of antidepressants on the functional dyspepsia patients' symptoms and gastric myoelectrical activity. METHODOLOGY: We conducted an open clinical trial with 40 functional dyspepsia patients. Zung self-rating depression scale was used in evaluating the patients' depression. Cutaneous electrogastrography and evaluation of upper gastrointestinal symptoms were performed before and after administration of a one-month course of fluoxetine. RESULTS: In the baseline study, the depressed functional dyspepsia patients had higher symptom scores than non-depressed patients (P < 0.05). The depressed functional dyspepsia patients had higher percentages of tachygastria than healthy controls (P < 0.05), but the electrogastrography parameters of depressed and non-depressed functional dyspepsia patients were not different. After one-month fluoxetine treatment, the symptom scores improved significantly in the depressed functional dyspepsia patients (P < 0.05), but not in the non-depressed patients. Electrogastrography did not improve in either group. CONCLUSIONS: Depressive functional dyspepsia patients had higher symptom scores and responded well to fluoxetine treatment. However, electrogastrography did not improve after the treatment. These findings suggest that depression is significant in the presentation of functional dyspepsia symptoms, but not correlated with gastric myoelectrical activity.     

Prevalence of functional dyspepsia and its relationship with Helicobacter pylori infection in a Japanese population

AIM: To investigate the prevalence of functional dyspepsia and Helicobacter pylori infection and their relationship in a Japanese population. METHODS: Two thousand five hundred people who visited Shimane Institute of Health Science for their annual medical check-up from September 1998 to August 1999 were prospectively enrolled in the study. After routine medical examination, including an upper gastrointestinal study and an ultrasonographic examination, all subjects were asked standard questions to check for the presence of any symptoms that suggested dyspepsia. Helicobacter pylori infection was determined by using a serum IgG antibody concentration with an ELISA. RESULTS: Of the 2,500 persons investigated, 2,263 showed no abnormal finding in any medical examination. The presence or absence of symptoms and H. pylori infection was investigated in these 2,263 cases. Of these, 201 people (8.9%) experienced nausea, fullness and/or early satiety and were diagnosed as having dysmotility-like dyspepsia, while 118 people (5.2%) experienced pain localized to the epigastrium and were diagnosed as having ulcer-like dyspepsia. The frequency of these symptoms had a tendency to decline with age, although this was not statistically significant. In contrast, the rate of H. pylori infection increased with age. There was no significant relationship between H. pylori infection and any type of functional dyspepsia. CONCLUSIONS: Helicobacter pylori infection does not influence the prevalence of the dysmotility-like and ulcer-like dyspeptic symptoms.     

Sensitivity of the gastric mucosa to acid and duodenal contents in patients with nonulcer dyspepsia

Nonulcer dyspepsia is a common clinical syndrome whose etiology is unknown. The sensitivity of the gastric mucosa to acid and duodenal contents in 18 patients with nonulcer dyspepsia was studied. The patients had a normal upper gastrointestinal endoscopy and biopsy specimens were obtained for determination of Helicobacter pylori status. Fifteen of the 18 patients were infected with H. pylori. All patients underwent intubation with double-lumen tube and collection of cholecystokinin-stimulated pancretico-biliary secretions. Subsequently, normal saline, 0.1N hydrochloric acid, and autologous duodenal secretions were infused into the stomach in a randomized blinded fashion. A positive response was defined as the production of epigastric pain by acid and/or bile but not by saline. By this definition, only 6 patients (33%) had a positive response and none had reproduction of their usual symptoms. In patients with a negative response, only 4 remained asymptomatic during all infusions. The remaining 8 had symptoms during infusion of saline, 7 of whom also had symptoms during infusion of acid and/or duodenal secretions. Two of these patients had reproduction of their usual symptoms. In conclusion, the gastric mucosa in patients with nonulcer dyspepsia is not abnormally sensitive to acid or duodenal contents.     

Chemospecific alterations in duodenal perception and motor response in functional dyspepsia

OBJECTIVE: Abnormal gastroduodenal motility and visceral hypersensitivity to intraduodenal acid have recently been recognized as pathophysiological factors in functional dyspepsia. The aim of this study was to assess whether these abnormalities in functional dyspepsia depend on the chemical composition of the stimulus. METHODS: In 17 patients with functional dyspepsia and 10 healthy controls 20-channel antropyloroduodenal manometry was performed. During phase II of the migrating motor complex small volumes (5 ml) of saline, acid, lipids, and dextrose were administered intraduodenally. Motility parameters and sensation scores for nausea, fullness, and epigastric pain were compared before and after each infusion and among the two groups. RESULTS: Acid induced a duodenal motor response in both groups, but less pressure waves (p < 0.05) and antegrade propagated pressure waves (p < 0.05) were observed in patients than in controls. In both groups lipids induced a similar, prominent increase in duodenal pressure waves. Acid and lipids suppressed antral-propagated pressure waves in both groups. Dextrose induced a modest increase in duodenal-propagated pressure waves in patients (p < 0.05) but not in controls. Although all infusions induced a mild increase in nausea in patients, only acid induced a significant increase in nausea after 1 min (p < 0.01). None of the infusions affected the sensations of epigastric pain or fullness in patients, nor did any infusions induce sensations in controls. CONCLUSIONS: In functional dyspepsia alterations in sensor and motor responses to intraduodenal acid and nutrients are chemospecific, suggesting an abnormality at the level of visceral afferents or mucosal chemoreceptors in these patients.     

功能性消化不良患者胃排空与症状的相关性及影响因素分析

目的了解胃排空异常与消化不良症状的相关性,分析影响功能性消化不良（FD）患者胃排空的因素。方法纳入32例FD患者。量化记录餐后上腹饱胀、上腹痛、上腹烧灼感、早饱、嗳气、恶心、呕吐7组症状及静息心率。以心率的中位数将其转化为二分类变量进行非条件Logistic回归分析统计。运用核素闪烁法检测空腹固体试餐,试餐参考美国胃肠动力学会、神经胃肠学会及核医学联合推荐的标准低脂试餐以及诊断标准。结果 32例FD患者,8例（25%）T1/2延迟,7例（21.88%）Retention%2 h增加,Retention%1 h均在正常范围内。Retention%2 h正常组与Retention%2 h增加组以及T1/2正常组与T1/2延长组之间,心率均存在显著差异（P=0.031,P=0.022）,心率与Retention%2 h、T1/2存在正相关（r=0.448,P=0.01;r=0.423,P=0.016）。在控制了性别、年龄及其他症状因素的影响下,心率〉70 bpm是Retention%2 h增加、T1/2延长的独立因素（OR=12.378,P=0.042;OR=8.180,P=0.072）。在Retention%2 h正常组与Retention%2 h增加组之间恶心症状指数有显著差异（P=0.003）,恶心与Retention%2 h、T1/2存在正相关（r=0.527,P=0.002;r=0.381,P=0.032）。结论心率、恶心症状与功能性消化不良患者的胃排空存在一定相关性,在控制了性别、年龄、BMI及其他症状的因素影响下,静息心率增加、出现恶心症状可能是胃排空延缓的独立因素。     

功能性消化不良症状和近端胃功能的关系

目的:探讨功能性消化不良(functional dyspepsia,FD)症状与近端胃敏感性、容受性及顺应性的关系.方法:记录32例健康志愿者和59例FD患者的基本人口学特征和消化不良症状,患者空腹行电子恒压器检查,将前端带有气囊的双腔聚乙烯导管经口插入受试者胃内,给予等压扩张,检测指标包括近端胃敏感性、容受性及顺应性;同样,所有受试者第二天空腹行胃排空功能检查,利用核素闪烁法测定胃的固体排空功能,得出全胃排空标准曲线并计算全胃半排时间.利用2和Logistic回归分析消化不良症状与近端胃功能关系.结果:44.07%的FD患者存在内脏敏感性增加,内脏敏感性正常组和增加组之间胃半排时间无差异.内脏敏感性增加的患者上腹痛症状发生率高于内脏敏感性正常的患者(P<0.01);上腹痛症状是内脏敏感性增加的相关因素(OR=4.430,P<0.05).37.29%的FD患者存在近端胃容受性减低,容受性正常组和减低组胃半排时间无差异.近端胃容受性减低的患者早饱症状的发生率高于近端胃容受性正常的患者(P<0.05);早饱症状是近端胃容受性减低的独立相关因素(OR=3.231,P<0.05).54.24%的FD患者存在顺应性减低,顺应性正常组和减低组之间胃半排时间及消化不良症状发生率均无显著差异(P>0.05).结论:FD患者的症状与近端胃功能障碍有关,上腹痛症状提示内脏敏感性增加,早饱症状提示近端胃容受性减低.     

功能性消化不良重叠症状与精神心理因素关系的初步研究

目的 探索功能性消化不良(FD)重叠症状与精神心理因素间的关系,以加深对症状重叠现象的认识和指导诊治.方法 将103例符合罗马Ⅲ标准的FD患者分为有重叠症状和无重叠症状组,比较两组患者在情绪状态(自评量表)、睡眠状况(自评量表)、焦虑和抑郁状态(Zung焦虑和抑郁自评量表)和生活质量(SF-36问卷中文版)方面的差异.结果 ① 103例FD患者中·39例(37.9%)无重叠症状,64例(62.1%)有重叠症状.②有重叠症状组的情绪状态中表现为"欠佳"和"很差"者分别为39.1%和20.2%,比无重叠症状组高(15.4%和12.8%,P=0.018).③有重叠症状组的睡眠状况表现为"欠佳"和"很差"者分别为45.3%和11.0%,比无重叠症状组高(19.1%和7.7%,P=0.018).④有重叠症状组合并焦虑和抑郁状态的比例为49%和68%,比无重叠症状组高(19%和44%,P值分别=0.004和0.022).⑤有重叠症状组心理复合分为32.8,精神健康为47.9,活力为47.1,比无重叠症状组低(37.0、57.8和57.0,P值分别=0.045、0.015和0.026).结论 异常精神心理因素与FD患者症状重叠现象间存在联系,提示异常精神心理因素可能是重叠症状产生的机制之一.     

Role of duodenal lipid and cholecystokinin A receptors in the pathophysiology of functional dyspepsia

BACKGROUND/AIMS: We aimed to evaluate the role of fat and cholecystokinin (CCK) in the pathophysiology of functional dyspepsia (FD) by investigating symptoms and plasma CCK levels following increasing doses of duodenal lipid during gastric distension, and the effect of CCK-A receptor blockade. SUBJECTS/METHODS: In study A, six FD patients were studied on three occasions during duodenal infusion of saline or lipid (1.1 (L-1) or 2 kcal/min (L-2)) and proximal gastric distensions. Six healthy subjects were also studied as controls during L-2 only. In study B, the effect of the CCK-A antagonist dexloxiglumide (5 mg/kg/h) on L-2 induced symptoms was studied in 12 FD patients. Changes in gastric volume at minimal distending pressure and plasma CCK (study A) were assessed, gastric distensions were performed using a barostat, and dyspeptic symptoms were monitored. RESULTS: Lipid increased gastric volume compared with saline (DeltaV (ml): saline 15 (20), L-1 122 (42), L-2 114 (28)) in patients and even more so in controls (221 (37); p<0.05). During distensions, symptoms were greater during L-2 than during saline or L-1, and greater in patients than in controls, while gastric compliance was smaller in patients than in controls (p<0.05). Lipid increased plasma CCK levels in patients and controls (p>0.05). Dexloxiglumide abolished the increase in gastric volume (DeltaV (ml): dexloxiglumide 17 (9), placebo 186 (49)) and dyspeptic symptoms (sum of scores: dexloxiglumide 24 (7), placebo 44 (19)) during duodenal lipid infusion. Dexloxiglumide also reduced gastric compliance (ml/mm Hg: dexloxiglumide 51 (7), placebo 72 (11)) and symptoms (sum of scores: dexloxiglumide 101 (17), placebo 154 (21)) during gastric distension. CONCLUSION: CCK-A receptors are involved in the generation of dyspeptic symptoms by duodenal lipid during gastric distension.     

Abnormal duodenal loop demonstrated by X-ray. Correlation to symptoms and prognosis of dyspepsia

The occurrence of dyspeptic symptoms has previously been correlated with the shape of the duodenal loop in patients with X-ray-negative dyspepsia. An abnormal duodenal loop was associated with a significantly higher incidence of symptoms provoked by meals, vomiting, regurgitation, heartburn, and the irritable bowel syndrome. Eighty-nine per cent of these patients (26 patients with a normal duodenal loop and 39 patients with abnormal duodenal loop) were available for a 5-year follow-up study of symptomatic outcome. The incidence of symptoms provoked by meals was still significantly higher in patients with an abnormal duodenal loop, and there was also a significant difference concerning symptomatic outcome. Approximately 75% of the patients with a normal duodenal loop had improved, and 25% had unchanged clinical conditions. Approximately 50% of the patients with an abnormal duodenal loop had improved, and 50% had an unchanged or even deteriorated clinical condition.     

Relationship between antral distension and postprandial symptoms in functional dyspepsia

INTRODUCTION Patients with functional dyspepsia (FD)[1] complain of several gastrointestinal (GI) and extra-gastrointestinal (extra-GI) symptoms[2-5] that are usually associated with food ingestion[6]. Several pathophysiological abnormalities have been im…