Assessment of duodenogastric reflux by combined continuous intragastric pH and bilirubin monitoring

AIM: To assess the diagnostic value of a combination of continuous intragastric pH and bilirubin monitoring in the detection of duodenogastric reflux (DGR), and the effects of diet on the bilirubin absorbance. METHODS: 30 healthy volunteers were divided into two groups: standard diet group (Group 1) 18 cases, free diet group (Group 2)12 cases. Each subjects were subjected to simultaneous 24-hour intragastric pH and spectrophotometric bilirubin concentration monitoring (Bilitec 2000). RESULTS: There was no difference of preprandial phase bilirubin absorbance between two groups. The absorbance of postprandial phase was significantly increased in group 2 than group 1. There was no difference between preprandial phase and postprandial phase absorbance in group 1. Postprandial phase absorbance was significantly higher in group 2. In a comparison of bile reflux with intragastric pH during night time, there were 4 types of reflux: Simultaneous increase in absorbance and pH in only 19.6%, increase in bilirubin with unchanged pH 33.3%, pH increase with unchanged absorbance 36.3%, and both unchanged in 10.8%. Linear regression analysis showed no correlation between percentage total time of pH【4 and percentage total time of absorbance】0.14, r=0.068 P【0.05. CONCLUSION: Because of the dietary effect, high absorbance fluids or foods should be avoided in detection. Intragastric pH and bilirubin monitoring separately predict the presence of duodenal (and/or pancreatic) reflux and bile reflux. They can not substitute for each other. The detection of DGR is improved if the two parameters are combined simultaneously.

Rabeprazole test for the diagnosis of gastro-oesophageal reflux disease: Results of a study in a primary care setting

AIM： To determine the diagnostic value of the rabeprazole test in patients seen by general practitioners. METHODS： Eighty-three patients with symptoms suggestive of GERD were enrolled by general practitioners in this multi-centre, randomized and doubleblind study. All patients received either rabeprazole （20 mg bid） or a placebo for one week. The diagnosis of GERD was established on the presence of mucosal breaks at endoscopy and/or an abnormal esophageal 24-h pH test. The test was considered to be positive if patients reported at least a ＂clear improvement＂ of symptoms on a 7-point Likert scale. RESULTS： The sensitivities of the test for rabeprazole and the placebo were 83% and 40%, respectively. The corresponding specificity, positive and negative predictive values were 45% and 67%, 71% and 71%, and 62% and 35%, respectively. A receiver operating characteristics （ROC） analysis confirmed that the best discriminatory cut-off corresponded to description of ＂clear improvement＂ CONCLUSION： The poor specificity of the proton-pump inhibitor （PPI） test does not support such an approach to establish a diagnosis of GERD in a primary care setting.

Primary Care Practitioners’ Views on the Use of Proton Pump Inhibitors Associated with Alginate-Antacids for Better Gastroesophageal Reflux Disease Symptom Control: Results of a National Survey in Spain

Background: Gastroesophageal reflux disease (GERD) is a prevalent disease in Western countries. Despite effective treatment modalities, in some patients total symptom control is not achieved in clinical practice. A cross-sectional study was designed to assess primary care practitioners’ views on the effectiveness of proton pump inhibitors (PPI) as monotherapy in the control of the most common symptoms of GERD (heartburn and regurgitation), as well as to determine the level of implementation of the “combined therapy” (PPI + alginate-antacids). Methods: A questionnaire on different aspects of the management of GERD was completed by 1491 primary care physicians. The questionnaire was composed of 11 close-ended questions with one-choice answer, with a total of 52 items, covering the main data from patients presenting with GERD. Results: Treatment with PPI alone was mostly considered insufficient for the control of GERD symptoms. The combined treatment of PPI + alginate-antacids was used for 37% and 21% of physicians for treating heart-burn and regurgitation, respectively. A better control of symptoms, an increase in the onset of action and to reduce nocturnal acid breakthrough were the most frequently argued reasons for the use of PPI + alginate-antacids. A high percentage of participants believed that treatment with PPI alone was insufficient for the control of symptoms and 39.8% of physicians reported the persistence of heartburn, 38.6% the persistence of regurgitation and 43.2% the persistence of epigastric discomfort in more than 25% of their patients treated with PPI as monotherapy. The most common schedule for the use of the antacid medication was on demand. Conclusions: Spanish primary care physicians consider that a high proportion of GERD patients continue to suffer from symptoms during PPI treatment alone. Ondemand “combined therapy” (PPI + antacid) is considered an efficient option to control reflux symptoms still troublesome in patients with PPI treatment alone.

Bioactive Fatty Acids Reduce Development of Gastric Cancer Following Duodenogastric Reflux in Rats

Background: Bioactive fatty acids such as the eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) and the modified fatty acid analogue, tetradecylthioacetic acid (TTA), are known to influence inflammatory processes in the body. Our aim was to investigate if diets containing fish oil (FO) enriched with bioactive fatty acids could affect inflammation and development of glandular stomach carcinogenesis in a duodenogastric reflux (DGR) animal model. We also wanted to evaluate if a high-fat diet might increase the risk of developing gastric cancer compared to a low-fat diet. Methods: 185 rats operated on with a gastroenterostomy were randomly allocated to 5 different treatment groups given: low-fat, high-fat, high-fat + FO, high-fat + TTA or high-fat + FO + TTA. The stomachs were removed after 50 weeks and examined by light microscopy with hematoxylin and eosin staining (HE). Immunohistochemical staining against COX-2, PCNA and p53 was performed when adenocarcinomas were found. The plasma fatty acid profile was determined. Results: Adenocarcinomas developed in 21% of animals fed the low-fat diet, 35% in the high-fat group, 16% in the high-fat + TTA group, 21% in the high-fat + FO group and 8.6% in the high-fat + FO + TTA treatment group. COX-2 and PCNA were positive whereas p53 was negative in the majority of the samples. The anti-inflammatory fatty acid index increased after treatment with FO and in combination with FO and TTA. Conclusion: FO and TTA in combination with a high-fat diet significantly lower the risk of developing adenocarcinomas in rats subjected to duodenogastric reflux. This is most likely due to a selective modulation of inflammation.

Comparative evaluation of intragastric bile acids and hepatobiliary scintigraphy in the diagnosis of duodenogastric reflux

AIM:To assess the diagnostic value of a combination of intragastric bile acids and hepatobiliary scintigraphy in the detection of duodenogastric reflux(DGR).METHODS:The study contained 99 patients with DGR and 70 healthy volunteers who made up the control group.The diagnosis was based on the combination of several objective arguments:a long history of gastric symptoms(i.e.,nausea,epigastric pain,and/or bilious vomiting) poorly responsive to medical treatment,gastroesophageal reflux symptoms unresponsive to protonpump inhibitors,gastritis on upper gastrointestinal(GI) endoscopy and/or at histology,presence of a bilious gastric lake at > 1 upper GI endoscopy,pathologic 24-h intragastric bile monitoring with the Bilitec device.Gas-tric juice was aspirated in the GI endoscopy and total bile acid(TBA),total bilirubin(TBIL) and direct bilirubin(DBIL) were tested in the clinical laboratory.Continuous data of gastric juice were compared between each group using the independent-samples Mann-Whitney U-test and their relationship was analysed by Spearman's rank correlation test and Fisher's linear discriminant analysis.Histopathology of DGR patients and 23 patients with chronic atrophic gastritis was compared by clinical pathologists.Using the Independent-samples Mann-Whitney U-test,DGR index(DGRi) was calculated in 28 patients of DGR group and 19 persons of control group who were subjected to hepatobiliary scintigraphy.Receiver operating characteristic curve was made to determine the sensitivity and specificity of these two methods in the diagnosis of DGR.RESULTS:The group of patients with DGR showed a statistically higher prevalence of epigastric pain in comparison with control group.There was no significant difference between the histology of gastric mucosa with atrophic gastritis and duodenogastric reflux.The bile acid levels of DGR patients were significantly higher than the control values(Z:TBA:-8.916,DBIL:-3.914,TBIL:-6.197,all P < 0.001).Two of three in the DGR group have a significantly associated with each other(r:TBA/DBIL:0.362,TBA/TBIL:0.470,DBIL/TBIL:0.737,all P < 0.001).The Fisher's discriminant function is followed:Con:Y = 0.002TBA + 0.048DBIL + 0.032TBIL 0.986;Reflux:Y = 0.012TBA + 0.076DBIL + 0.089TBIL-2.614.Eighty-four point zero five percent of original grouped cases were correctly classified by this method.With respect to the DGR group,DGRi were higher than those in the control group with statistically significant differences(Z =-5.224,P < 0.001).Twenty eight patients(59.6%) were deemed to be duodenogastric reflux positive by endoscopy,as compared to 37 patients(78.7%) by hepatobiliary scintigraphy.CONCLUSION:The integrated use of intragastric bile acid examination and scintigraphy can greatly improve the sensitivity and specificity of the diagnosis of DGR.

Diagnostic value of confocal laser endomicroscopy in primary bile reflux gastritis

Objective To evaluate the accuracy of confocal laser endomicroscopy(CLE)in primary bile reflux gastritis(BRG).Methods From November 10 to December 15,2015,55 patients undergoing CLE examination and preliminarily diagnosed as BRG with traditional white-light endoscopy were enrolled.CLE score standard was designed.Dixon pathologic score was considered as

儿童原发性十二指肠胃反流与幽门螺杆菌感染对胃炎和抗生素耐药性的影响

目的探讨儿童原发性十二指肠胃反流(duodenogastric reflux,DGR)伴幽门螺杆菌(Helicobacter pylori,HP)感染发生的危险因素及对胃炎和抗生素耐药性的影响。方法回顾性分析2019年1月—2022年2月在无锡市儿童医院接受上消化道内镜检查的患儿的临床资料,308例经内镜诊断为原发性DGR,根据是否伴HP感染,分为原发性DGR伴HP感染组(53例)和不伴HP感染组(255例),分析影响原发性DGR伴HP感染发生的危险因素及其对胃炎发病率和严重程度的影响。331例HP感染患儿根据是否伴原发性DGR,分为HP感染伴原发性DGR组(29例)和不伴原发性DGR组(302例),分析原发性DGR伴HP感染对抗生素耐药性的影响。结果原发性DGR伴HP感染组患儿年龄高于不伴HP感染组(P<0.05),且两组患儿年龄分布差异有统计学意义(P<0.05);两组患儿胃炎比例及胃炎严重程度比较差异无统计学意义(P>0.05)。多因素logistic回归分析显示,年龄大是原发性DGR伴HP感染发生的危险因素(P<0.05)。药敏试验显示HP感染伴原发性DGR组和不伴原发性DGR组甲硝唑、克拉霉素和左氧氟沙星的单一及联合耐药率比较差异无统计学意义(P>0.05)。结论年龄大与原发性DGR伴HP感染密切相关。原发性DGR伴HP感染对儿童胃炎和抗生素耐药性无显著影响。

Prevalence of bile reflux in gastroesophageal reflux disease patients not responsive to proton pump inhibitors

AIM:To determine the prevalence and characteristics of bile reflux in gastroesophageal reflux disease(GERD) patients with persistent symptoms who are non-responsive to medical therapy.METHODS:Sixty-five patients(40 male,25 female;mean age,50 ± 7.8 years) who continued to report symptoms after 8 wk of high-dose proton pump inhibitor(PPI) therapy,as well as 18 patients with Barrett's esophagus,were studied.All patients filled out symptom questionnaires and underwent endoscopy,manometry and combined pH-metry and bilimetry.RESULTS:There were 4 groups of patients:22(26.5%) without esophagitis,24(28.9%) grade A-B esophagitis,19(22.8%) grade C-D and 18(21.6%) Barrett's esophagus.Heartburn was present in 71 patients(85.5%) and regurgitation in 55(66.2%),with 44(53%) reporting simultaneous heartburn and regurgitation.The prevalence of pathologic acid reflux in the groups without esophagitis and with grades A-B and C-D esophagitis was 45.4%,66.6% and 73.6%,respectively.The prevalence of pathologic bilirubin exposure in these 3 groups was 53.3%,75% and 78.9%,respectively.The overall prevalence of bile reflux in non-responsive patients was 68.7%.Pathologic acid and bile reflux was observed in 22.7% and 58.1% of non-esophagitic patients and esophagitic patients,respectively.CONCLUSION:The high percentage of patients poorly responsive to PPI therapy may result from poor control of duodenogastroesophageal reflux.Many patients without esophagitis have simultaneous acid and bile reflux,which increases with increasing esophagitis grade.

Carcinogenic potential of duodenal reflux juice from patients with long-standing postgastrectomy

AIM: To determine whether study on the carcinogenic potential of reflux juice from patients with remote gastrectomy could clarify the inherent relationship between duodenal reflux and gastric stump cancer. METHODS: A total of 37 reflux juice samples (13 Billroth I, 24 Billroth II) were employed in the present study. A two-stage transformation assay using BALB/c 3T3 cells was carried out to test the initiating or promoting activity of these samples. RESULTS: Two of 18 (11.1%) reflux samples exerted initiating activities, whereas 9/19 (47.4%) samples enhanced the MNNG-initiating cell transformation, suggesting the duodenal reflux juice might more frequently possess the tumor-promoter activity (P = 0.029). In addition, there was no difference in initiating activities of the samples irrespective of surgical procedures (P = 0.488), while Billroth II samples exhibited stronger tumor-promoter activity than Billroth I samples (P = 0.027). Furthermore, the promoter activities were well correlated with the histological changes of the stomas (r(s) = 0.625, P = 0.004), but neither their cytotoxicities nor initiating activities had this correlation (Probabilities were 0.523 and 0.085, respectively). CONCLUSION: The duodenal reflux juice from patients with remote postgastrectomy did have carcinogenic potential, and suggested that tumor-promoting activity should principally account for the high incidence of gastric cancer in gastrectomy patients. In contrast, it is difficult to explain the high stump-cancer incidence with the N-nitroso compounds theory-a popular theory for the intact stomach carcinogenesis, and it seemed to be justified to focus chemo-prevention of this cancer on the tumor-promoting potential of reflux juice.

24-hour esophageal pH-monitoring in children suspected of gastroesophageal reflux disease: Analysis of intraesophageal pH monitoring values recorded in distal and proximal channel at diagnosis

AIM: To assess values of 24-h esophageal pH-monitoring parameters with dual-channel probe (distal and proximal channel) in children suspected of gastroesophageal reflux disease (GERD). METHODS: 264 children suspected of gastroesophageal reflux (GER) were enrolled in a study (mean age χ = 20.78 ± 17.23 mo). The outcomes of this study, immunoallerrgological tests and positive result of oral food challenge test with a potentially noxious nutrient, enabled to qualify children into particular study groups. RESULTS: 32 (12.1%) infants (group 1) had physiological GER diagnosed. Pathological acid GER was confirmed in 138 (52.3%) children. Primary GER was diagnosed in 76 (28.8%) children (group 2) and GER secondary to allergy to cow milk protein and/or other food (CMA/FA) in 62 (23.5%) children (group 3). 32 (12.1%) of them had CMA/FA (group 4-reference group), and in remaining 62 (23.5%) children neither GER nor CMA/FA was confirmed (group 5). Mean values of pH monitoring parameters measured in distal and proximal channel were analyzed in individual groups. This analysis showed statistically significant differentiation of mean values in the case of: number of episodes of acid GER, episodes of acid GER lasting > 5 min, duration of the longest episode of acid GER in both channels, acid GER index total and supine in proximal channel. Statistically significant differences of mean values among examined groups, especially between group 2 and 3 in the case of total acid GER index (only distal channel) were confirmed. CONCLUSION: 24-h esophageal pH monitoring confirmed pathological acid GER in 52.3% of children with typical and atypical symptoms of GERD. The similar pH-monitoring values obtained in group 2 and 3 confirm the necessity of implementation of differential diagnosis for primary vs secondary cause of GER.

厚朴排气合剂联合莫沙必利治疗原发性胆汁反流性胃炎的临床疗效分析

目的探讨厚朴排气合剂联合莫沙必利治疗原发性胆汁反流性胃炎的临床效果。方法160例原发性胆汁反流性胃炎患者,用随机数字表法分为对照组和研究组,每组80例。对照组应用莫沙必利治疗,研究组应用莫沙必利联合厚朴排气合剂治疗。比较两组患者临床疗效、胃镜下疗效及胃电节律、不良反应发生情况。结果研究组患者临床总有效率96.25%高于对照组的85.00%,差异有统计学意义(P<0.05)。研究组患者胃镜下总有效率95.00%高于对照组的78.75%,差异有统计学意义(P<0.05)。治疗后,两组患者胃窦、胃体餐后餐前主功率比值均高于本组治疗前,且研究组患者胃窦、胃体餐后餐前主功率比值分别为(1.31±0.22)、(1.29±0.20),高于对照组的(1.17±0.16)、(1.18±0.15),差异有统计学意义(P<0.05)。两组患者不良反应发生率比较差异无统计学意义(P>0.05)。结论应用莫沙必利联合厚朴排气合剂治疗原发性胆汁反流性胃炎患者效果十分显著,值得推广应用。

原发性胆汁反流性胃炎患者自我效能感调查、危险因素及干预对策

目的调查原发性胆汁反流性胃炎(PBRG)患者自我效能感,并分析其危险因素,制定合理的干预对策。方法选取河南省人民医院2020年5月至2023年2月收治的108例PBRG患者,采用一般自我效能感量表(GSES)调查患者自我效能感现状,收集其基本资料,并进行单因素分析与多元线性回归分析。结果108例PBRG患者平均GSES评分为(23.86±3.24)分;年龄≥60岁、初中及以下文化程度、病程≥2年、支付方式自费、消极应对方式、有不良心理状态、社会支持度低患者的GSES评分更低,差异均有统计学意义(P<0.05);多元线性回归分析结果显示,年龄≥60岁、初中及以下文化程度、病程≥2年、支付方式自费、消极应对方式、有不良心理状态、社会支持度低是影响PBRG患者GEES评分的独立危险因素,差异均有统计学意义(P<0.05)。结论PBRG患者自我效能感处于中等水平,年龄、文化程度、病程、支付方式、应对方式、不良心理状态及社会支持度等因素均可能对其产生影响,应制定针对性的干预对策。

黄连温胆汤加减联合三联疗法治疗湿热中阻证原发性胆汁反流性胃炎的效果

目的 探讨黄连温胆汤加减联合三疗法治疗湿热中阻证原发性胆汁反流性胃炎的临床效果。方法 收集就诊于我院胃镜室确诊湿热中阻证原发性胆汁反流性胃炎患者80例,平均划分为对照组、试验组。对照组采用三联疗法,服用铝碳酸镁咀嚼、奥美拉唑、莫沙必利,试验组在此方案基础上加服黄连温胆汤;两组疗程均为4周。治疗后,比较两组患者中医证候积分、胃镜疗效、临床疗效。结果 两组患者治疗后主症、次症积分均较治疗前下降,证候均较治疗前缓解(P<0.05);治疗后,试验组主症、次症积分均低于对照组,证候缓解优于对照组(P<0.05)。治疗后,试验组腺体萎缩、胆汁反流改善情况明显优于对照组(P<0.05)。两组患者临床总有效率比较,差异无统计学意义(P>0.05)。结论 黄连温胆汤加减联合三联疗法治疗湿热中阻证原发性胆汁反流性胃炎能显著改善症状,有效对抗胆汁反流。

自拟降逆理气和胃方治疗原发性胆汁反流性胃炎(肝胃郁热证)的疗效及对胃电图的影响

目的:探究自拟降逆理气和胃方治疗原发性胆汁反流性胃炎患儿(肝胃郁热证)的疗效及对胃电图的影响。方法:选择2019年9月~2021年9月于我院就诊的原发性胆汁反流性胃炎患儿94例,采用抽签法分为中药组与西药组各47例,治疗后,比较两组患儿的临床疗效与不良反应;治疗前后,比较两组患儿的中医证候积分、胃电的平均振幅(AP)、胃电主频(FP)、正常慢波比例、胃动素(MTL)、胆囊收缩素(CCK)、血管活性肠肽(VIP)水平。结果:中药组患儿治疗总有效率为95.74%,高于西药组的72.34%(P<0.05);治疗后,两组患儿胃脘灼痛、嗳气反酸、两胁胀痛、口干口苦等积分均下降,且中药组患儿上述各项积分均低于西药组(P<0.05);治疗后,两组患儿AP水平比较,差异无统计学意义(P>0.05),中药组患儿FP、正常慢波比例水平均高于西药组(P<0.05);治疗后,中药组患儿MTL水平高于西药组,CCK、VIP水平均低于西药组(P<0.05);治疗过程中两组患儿均未出现不良反应。结论:在治疗肝胃郁热证原发性胆汁反流性胃炎患儿时,使用自拟降逆理气和胃方有较好的临床疗效,可降低其中医证候积分,调节其胃肠激素水平,并通过促进胃肠蠕动,改善胃电图指标。治疗中未出现不良反应。

腹腔镜联合一期吻合术对胆囊合并胆总管结石的疗效

目的对临床胆囊合并胆总管结石患者,应用腹腔镜联合一期吻合术治疗效果进行研究。方法研究样本,来源于太仓市第一人民医院确诊胆囊合并胆总管结石患者,共计100例,搜集时间2018年1月—2021年10月,按随机数字表法进行分组,接受常规开腹手术(n=40)患者纳入对照组,接受腹腔镜联合胆道镜胆总管一期吻合术(n=60)患者纳入研究组,对比两组最后临床效果。结果研究组手术时间、胃肠道功能恢复时间、引流时间短于对照组,差异有统计学意义(P<0.05);研究组治疗总有效率高于对照组,差异有统计学意义(P<0.05);研究组并发症发生率较对照组较低,差异有统计学意义(P<0.05)。结论胆囊合并胆总管结石患者的临床治疗方案,以腹腔镜联合胆道镜为主,同时在结合患者个体情况取石完整的情况下行胆总管一期吻合术,在缩短手术、胃肠道功能恢复,以及引流时间方面效果明显,促进患者治疗效果提升基础上,减少出现并发症的可能。

四逆散合黄芩加半夏生姜汤加减治疗原发性胆汁反流性胃炎临床研究

目的:观察四逆散合黄芩加半夏生姜汤加减治疗原发性胆汁反流性胃炎的临床疗效。方法:将60例原发性胆汁反流性胃炎患者按照随机数字表法分为对照组和治疗组,每组各30例。对照组给予三联疗法治疗,治疗组给予四逆散合黄芩加半夏生姜汤加减治疗。比较两组患者的临床疗效、复发率及治疗前后中医证候积分、汉密尔顿抑郁量表(hamilton depression scale,HAMD)、汉密尔顿焦虑量表(hamilton anxiety scale,HAMA)评分变化情况。结果:治疗组有效率为93.3%,对照组有效率为90.0%,两组有效率比较,差异无统计学意义(P>0.05)。两组患者治疗后中医证候积分低于本组治疗前,且治疗后治疗组低于对照组,差异具有统计学意义(P<0.05)。两组患者治疗后HAMD量表评分及HAMA量表评分低于本组治疗前,且治疗后治疗组低于对照组,差异具有统计学意义(P<0.05)。治疗组复发率低于对照组,差异具有统计学意义(P<0.05)。结论:四逆散合黄芩加半夏生姜汤加减治疗原发性胆汁反流性胃炎,可明显改善患者的临床症状,缓解患者的焦虑及抑郁状态,降低复发率。

旋流器结构特征参数对中心分级燃烧室温度场的影响

以装有三级旋流器的中心分级燃烧室为研究对象,分别建立旋流器和燃烧室物理模型,利用数值模拟和控制变量的方法,研究旋流器结构特征参数对中心分级燃烧室温度场的影响,分别完成了值班级第一级、第二级旋流器和主燃级旋流器结构参数变化对中心分级燃烧室温度场影响的数值模拟和对比分析。结果表明:当值班级第一级旋流器的斜切孔角度为25°和值班级第二级旋流器的叶片安装角度为30°~45°时,中心回流区分布较好,反映出值班级旋流器对中心分级燃烧室温度场的影响较好,促进了火焰稳定燃烧;当主燃级旋流器旋流孔角度为45°~60°时,中心回流区分布较为理想,反映出主燃级旋流器对中心分级燃烧室温度场的影响较为理想,可有效避免因中心回流区面积过大造成燃烧室高温区集中。

胆囊切除术后患者十二指肠胃反流的研究

目的 观察胆囊切除术后综合征 (postcholecystectomysyndrome,PCS)患者十二指肠胃反流 (duodenogastricre flux ,DGR)的变化 ,探讨胆囊切除后DGR发生情况及其与PCS的关系。方法 2 0例胆囊切除术后综合征患者行动态 2 4h胃内pH和胆红素 (Bilitec 2 0 0 0 )检测 ,并与 10例胆石症患者和 15例正常对照者作比较。结果 胆囊切除术后综合征组与正常对照组比较 ,碱反流和胆汁反流均不增加。胆石症组碱反流较对照组增加 ,胆汁反流不增加。

胆汁反流对胃内pH值的影响

目的 观察胆汁反流对胃内 pH值的影响。方法 对不同浓度胆汁和胃液的混合液及内镜下抽取的黄染和无黄染胃液 ,测定pH和胆红素吸光值 ;2 0例功能性消化不良患者同步监测2 4h胃内pH和胆红素吸光值。结果 胆汁浓度为 2 0 %时吸光值已达 0 90 0 ,而pH仍在 1 0左右 ;浓度为 60 %时pH始上升达 4以上。黄染组pH <4的病例占 80 % ,吸光值为 0 .348±0 .1 31 ,无黄染组pH <4的病例占 81 % ,吸光值为 0 .0 0 8± 0 .0 0 3,pH和吸光值之间无明显相关性。 1 2例有夜间自发性碱波者 8例同步有胆红素吸光值升高 ,8例无夜间自发性碱波者 4例有胆红素吸光值升高。结论 在一定浓度下 ,胆汁反流对胃内 pH值影响较小。

十二指肠胃反流胃肠动力机制研究

背景:十二指肠胃反流(DGR)是一种常见的生理和病理现象,与许多疾病的发生有关。目前其发生机制尚不明确。目的:探讨DGR发生与胃窦十二指肠消化间期移行性复合运动(MMC)的关系。方法:对20名健康志愿者行24h同步胃内pH监测和胆汁监测,以及夜间长时胃窦十二指肠压力测定。结果:24h同步胃内pH监测和胆汁监测后,20名健康志愿者分为2组:DGR阴性组(D1组)(7名)和DGR阳性组(D2组)(13名)。D1组MMC周期数较D2组显著增加(P<0.05);D2组胃窦十二指肠协调收缩较D1组显著减少,十二指肠推进性蠕动减少(P均<0.05)。D1组十二指肠MMCⅢ相逆蠕动发生率显著低于D2组(P<0.05)。D2组发生MMCⅢ相逆蠕动前后10min,胃内pH值分别为1.72±0.61和3.70±0.72,差异有统计学意义(P<0.01)。夜间MMCⅡ相晚期碱反流和胆汁反流的发生率显著高于Ⅰ相、Ⅱ相早期和Ⅲ相(P均<0.05)。结论:DGR的发生与胃窦十二指肠MMC周期数、Ⅱ相晚期和Ⅲ相逆蠕动有关。