胃食管反流病伴或不伴食管损伤与食管动力及酸反流之间的关系

目的 研究胃食管反流病(GERD)患者伴或不伴食管损伤与食管动力和酸反流之间的相关性.方法 对符合GERD诊断标准的25例受试者行胃镜检查,随后进行高分辨率食管测压检查,并检测进食标准试验餐后的动态食管pH值变化.比较伴或不伴食管损伤组患者之间的食管动力和餐后食管酸反流时间的差异.同时按DeMeester评分将受试者分为非酸反流组和酸反流组,比较两组食管动力学指标的变化.统计学处理采用t检验和秩和检验.结果 伴或不伴食管损伤组之间下食管括约肌(LES)压力基础值、LES压力残余平均值、食管蠕动传播速度、食管pH＜4的时间和DeMeester评分均差异无统计学意义(P均＞0.05),但是伴食管损伤组的食管收缩幅度明显弱于不伴食管损伤组(31.9 mm Hg比64.2 mm Hg,1 mm Hg=0.133 kPa;Z=-2.37,P=0.02).酸反流组和非酸反流组之间LES压力基础值、LES压力残余平均值、食管蠕动传播速度差异均无统计学意义(P均＞0.05),但酸反流组的食管收缩幅度明显弱于非酸反流组(36.4 mm Hg比71.8mm Hg;Z=2.25,P=0.02).结论 GERD患者LES压力及食管酸反流与食管损伤之间无显著关系,食管蠕动性收缩功能可能与食管损伤及酸反流有关.     

胃食管反流性咳嗽患者食管高分辨率测压及阻抗-pH监测特点探讨

目的应用食管高分辨率测压(high-resolution esophageal manometry,HRM)联合24 h食管多通道腔内阻抗-p H监测(multichannel intraluminal esophageal impedance and p H monitoring,MII-p H)探讨胃食管反流性咳嗽(gastroesophageal reflux cough,GERC)的食管动力和胃食管反流特点。方法收集2014年1月-2014年7月在华中科技大学同济医学院附属同济医院就诊的28例GERC患者,应用HRM测定上食管括约肌(UES)和下食管括约肌(LES)压力、食管体部蠕动功能,同时联合MII-p H观察立位、卧位及餐后酸反流、弱酸反流和非酸反流的次数、食管近端反流的次数和反流类型包括液体反流、混合反流和气体反流及De Meester评分等。以同期仅表现为典型烧心、反酸等胃食管反流症状的胃食管反流病(gastroesophageal reflux disease,GERD)患者作为对照,比较两组食管运动功能及阻抗-p H监测参数之间的差异。结果与典型GERD患者相比,GERC患者的UES静息压力明显降低(P0.01);食管体部近端收缩波幅降低(P0.05);而LES静息压力、食管体部远端收缩波幅和食管体部异常蠕动比例差异无统计学意义(P0.05)。MII-p H结果显示,GERC患者总反流次数和食管近端反流比与典型GERD患者相比,差异无统计学意义(P0.05),但立位反流次数明显高于典型GERD患者(P0.05);两组之间反流类型液体反流和混合反流次数差异无统计学意义(P0.05),但GERC组气体反流次数显著高于典型GERD组(P0.01);两组之间De Meester评分差异无统计学意义(P0.05)。结论 GERC的反流发生机制可能与典型GERD不同,与UES静息压力降低、食管体部近端清除能力下降、食管反流次数尤其气体反流次数和立位反流次数增加有关。     

难治性胃食管反流病食管运动功能及反流特征的临床研究

目的研究难治性胃食管反流病(refractory gastroesophageal reflux disease,r GERD)食管运动功能和反流特点。方法应用高分辨率食管测压仪检测40例r GERD患者上食管括约肌(UES)压力、下食管括约肌(LES)压力及食管体部运动功能。同时应用便携式24 h食管p H-阻抗监测仪研究r GERD患者的酸暴露特点、反流类型及反流特点。结果 40例r GERD患者中32.5%的患者存在UES压力偏高,65.0%的患者LES压力偏低,42.5%的患者有食管体部压力偏低或蠕动异常,52.5%的患者存在胃内压力偏高。40.0%的r GERD患者为酸反流,31.4%的r GERD患者为弱酸反流,62.9%的r GERD患者为混合反流。结论 r GERD患者存在UES压力偏高、LES压力下降和食管廓清能力下降,胃内压力偏高。酸抑制不完全、弱酸反流及食管高敏感可能是导致r GERD的重要原因。     

以慢性咳嗽为主要表现的胃食管反流病患者的食管功能及反流特点

目的 通过对以慢性咳嗽为主要表现的胃食管反流病(GERD)患者行高分辨食管内压力-阻抗联合测定(MII-HRM)及24h联合多通道腔内阻抗-pH( MII-pH)监测的结果分析,探讨此类患者食管运动功能及胃食管反流的特点.方法 选取2010年3-11月在首都医科大学附属北京朝阳医院就诊的19例GERD伴慢性咳嗽患者为研究对象.应用MII-HRM及24 h MII-pH监测系统测定上食管括约肌(UES)和下食管括约肌压力、食管体部蠕动功能、对液体和黏液性物质的传输功能、立位及卧位酸及非酸反流的次数、近端反流的次数、酸暴露时间、酸清除时间以及食团清除时间.以同期仅表现为典型胃食管反流症状的17例GERD患者作为对照,比较两组间食管运动功能以及胃食管反流参数的差异.结果 与仅表现为典型胃食管反流症状的GERD患者相比,以慢性咳嗽为主要表现的GERD患者的UES静息压力明显更低[(122.55 ±60.48)mm Hg比(86.37±41.35) mm Hg(1 mm Hg =0.133 kPa),P＜0.05],食管体部异常蠕动的比例更高[(9.47±15.63)％比(22.16±17.45)％,P＜0.05],食管体部对液体物质传输能力减低[(88.82±12.23)％比(71.68±23.06)％,P＜0.05],卧位时酸及非酸反流次数及卧位近端非酸反流次数明显增多(P＜0.05),卧位食团清除时间延长(P＜0.05).结论 以慢性咳嗽为主要表现的GERD发病机制可能与单纯典型GERD不同,其与UES静息压力减低、卧位酸及非酸反流、近端反流的增多以及食管清除功能障碍密切相关.     

内镜下阴性胃食管反流病患者食管功能及反流特点研究

[目的]研究反流高敏感(RH)、功能性烧心(FH)与非糜烂性反流病(NERD)患者食管功能及反流特点的差别。[方法]选取于2017年12月～2019年5月在首都医科大学附属北京中医医院消化科同时行胃镜、高分辨率食管测压以及24 h多通路腔内阻抗联合pH监测的141例患者,根据症状及检查结果分为NERD组(42例)、RH组(58例)、FH组(41例),比较3组患者食管测压、24 h食管pH及pH-阻抗情况。[结果]FH组LES静息压、同步收缩百分比显著高于RH组(P0.05);LES长度、LESP下降例数、LES残余压、UES静息压、UES残余压、波幅平均值、无效食管动力、蠕动断裂、DCI平均值、远端收缩延迟、提前收缩百分比、快速收缩百分比3组之间差异均无统计学意义(P0.05);3组间DeMeester评分、总反流次数、立位酸暴露时间占比、近端酸反流次数、远端酸反流次数比较,差异有统计学意义(P0.05)。NERD组总反流时间、长反流次数、最长反流时间、总酸暴露时间占比、卧位酸暴露时间占比显著高于RH组、FH组(P0.05)。NERD组、RH组近端反流次数显著高于FH组(P0.05)。RH组远端弱酸反流次数、近端弱酸反流次数中显著高于FH组(P0.05)。3组远端非弱酸反流事件差异无统计学意义(P0.05)。[结论]3组患者均存在不同程度的食管动力异常,可通过弱酸反流增加、近端反流比率升高将RH、FH精准区分开来。     

合并食管外症状的难治性胃食管反流病的临床研究

选取51例难治性GERD患者,分析合并食管外症状和典型反流症状的难治性GERD患者的高分辨率食管测压和24 h pH-阻抗监测数据。结果显示合并食管外症状组弱酸反流事件发生率(41.0%,16/39)高于典型反流症状组(9/12),差异有统计学意义(χ^2=4.238,P=0.040);而两组酸反流、长反流、非酸反流和食管动力之间差异均无统计学意义(P均>0.05)。弱酸反流可能是合并食管外症状难治性GERD的重要发病机制。     

食管动力在咽喉反流发生中的作用

目的:探讨食管动力在咽喉反流发生过程中的作用. 方法:对怀疑由胃食管反流引起的22 例反流性咽喉炎患者(LPR 组)和存在典型食管反流症状(反酸烧心)却没有咽喉炎症状的23 例胃食管反流病患者(GERD 组)进行食管压力测定和24 h 食管pH 监测. 结果:LPR 组的食管上括约肌压力(UESP) 和距食管下括约肌(LES)8 cm 处的食管收缩力明显低于GERD 组(41.23±19.61 mmHg vs 55.82 ±20.51 mmHg;58.77±30.84 mmHg vs 77.40 ±36.12 mmHg,P = 0.009,0.035),2 组的食管上括约肌长度(UESL) 、食管下括约肌长度(LESL) 、食管下括约肌压力(LESP) 和食管其余各段(距LES 3 、13 、18 cm) 的收缩力无明显差异. LPR 组病理性酸反流的发生率明显低于GERD 组(χ2 = 3.979,P = 0.046),差异有统计学意义. 结论:UESP 和食管下段的收缩力在阻止咽喉反流的发生中起重要作用.     

阻塞性睡眠呼吸暂停综合征与胃食管反流病相关性研究

目的研究阻塞性睡眠呼吸暂停综合征(OSAHS)与胃食管反流病(GERD)的相关性。方法选取我院42例OSAHS患者及42例健康体检者为研究对象,分别设定为A、B两组,比较两组食管下括约肌(LES)、食管括约肌(UES)压力,同时进行De Meeter评分,并对所选患者采取阻抗检测,比较两组以上指标差异。结果 A组LES长度、UES持续及恢复时间显著低于B组(P0.05);A组De Meeter评分为(12.25±3.64)分,显著高于对照组的(4.58±1.96)分(P0.05),A组中3例呈胃食管反流阳性;A组酸反流次数、总反流次数显著高于B组(P0.05),弱酸反流次数、非酸反流次数两组比较差异无统计学意义(P0.05)。结论 OSAHS患者有明确的LES和UES异常,少数合并胃食管反流病,酸性物质为食管反流的主要类型。     

食管动力学障碍不同亚型对胃食管反流病的影响

目的探讨食管动力学障碍不同亚型在胃食管反流病(gastroesophageal reflux disease,GERD)中的作用。方法收集40例GERD典型症状患者,全部行食管高分辨率测压(high-resolution manometry,HRM)和24 h食管动态p H阻抗监测,根据HRM结果,分为动力正常组、失蠕动收缩组、弱蠕动收缩组、间断收缩组。分析食管动力学障碍不同亚型及正常食管动力患者胃食管病理性反流情况。结果 40例典型GERD症状患者中动力正常组10例(25.0%),失蠕动收缩组11例(27.5%),弱蠕动收缩组19例(47.5%),间断收缩组30例(75.0%)。失蠕动收缩组及弱蠕动收缩组反流次数明显多于食管动力正常组(96.7±65.5、92.7±49.1 vs 69.5±31.3,P0.05),以弱酸反流(53.3±52.2、47.7±34.6 vs 20.3±15.3,P0.05)为主;而病理性酸暴露程度无明显差别。与食管动力正常组相比,间断收缩组患者总p H4时间(%)明显升高(8.4±3.9 vs 14.3±7.6,P0.05);De Meester评分有升高趋势,但差异无统计学意义(27.9±43.9 vs 50.6±60.6,P0.05)。结论食管收缩力差的患者更易出现反流次数增加且以弱酸反流为主;而食管收缩模式障碍的患者则与食管远端酸暴露更为相关。     

老年胃食管反流病患者的食管动力及反流特点分析

目的分析老年胃食管反流病(gastroesophageal reflux disease,GERD)患者的一般人口学特征、食管动力学及反流监测的特点,为临床诊断及治疗提供帮助。方法选取2016年10月至2017年5月在中日友好医院门诊诊断为GERD的80例患者,将其分为老年组(≥60岁)和中青年组(60岁),分析两组患者的一般人口学特征及食管动力学、反流监测情况。结果老年组的Demeester评分、酸反流次数及立位pH4.0时间占总监测时间百分比均显著高于中青年组(P0.05)。老年组的LES静息压、UES静息压、DCI与中青年组相比显著降低(P0.05)。老年组的食管收缩力度指标中正常收缩占总收缩的比例与中青年组相比也显著降低(P=0.023)。Demeester评分与年龄有直线相关关系,呈正相关,即年龄越大,Demeester评分越高。UES静息压与年龄有直线相关关系,呈负相关,即年龄越大,UES静息压越低。结论与中青年GERD患者相比,老年GERD患者食管抗反流屏障功能减弱,食管体部运动功能减弱,酸暴露程度明显。     

Transient lower esophageal sphincter relaxation and the related esophageal motor activities

Transient lower esophageal sphincter (LES) relaxation (TLESR) is defined as LES relaxation without a swallow. TLESRs are observed in both of the normal individuals and the patients with gastroesophageal reflux disorder (GERD). However, TLESR is widely considered as the major mechanism of the GERD. The new equipments such as high resolution manometry and impedance pH study is helped to understand of TLESR and the related esophageal motor activities. The strong longitudinal muscle contraction was observed during development of TLESR. Most of TLESRs are terminated by TLESR related motor events such as primary peristalsis and secondary contractions. The majority of TLESRs are associated with gastroesophageal reflux. Upper esophageal sphincter (UES) contraction is mainly associated with liquid reflux during recumbent position and UES relaxation predominantly related with air reflux during upright position. The frequency of TLESR in GERD patients seems to be not different compared to normal individuals, but the refluxate of GERD patients tend to be more acidic during TLESR.     

胃食管反流病合并房颤患者采用盐酸胺碘酮联合艾司奥美拉唑治疗效果及对炎症因子的影响

目的探讨胃食管反流病（GERD）合并心房颤动（房颤）患者采用盐酸胺碘酮联合艾司奥美拉唑治疗后的临床疗效及其对炎症因子水平的影响。 方法回顾性分析2018年1月至2019年12月在新疆维吾尔自治区人民医院住院收治的87例GERD合并房颤患者,根据治疗方式的不同,分为对照组（常规治疗的基础上给予盐酸胺碘酮治疗）和研究组（在对照组基础上联合给予艾司奥美拉唑治疗）;2组均接收治疗1个月。采用GERD症状评分、胃食管24 h pH监测、高分辨率食管测压监测来分析2组治疗前后抑酸,胃食管动力及房颤发生的影响及疗效;收集2组患者治疗前后的血液标本,并采用ELISA法检测炎症因子（白细胞介素-6、C反应蛋白及肿瘤坏死因子-α）的变化水平。 结果经食管24 h pH监测发现,研究组在GERD症状评分,食管近端弱酸反流（%）、食管近端酸反流（%）及DeMeester评分等指标,与其治疗前和对照组治疗后比较显著降低（P＜0.05）;高分辨率食管测压分析显示,与治疗前和对照组治疗后相比,研究组治疗后显著改善食管上段括约肌（UES）静息压、食管下段括约肌（LES）静息压及食管远端收缩积分（DCI）等指标（P＜0.05）;2组患者治疗后心率以及QT离散度（QTd）水平均显著小于治疗前（P＜0.05）,且研究组治疗后心率水平显著小于对照组治疗后的水平（P＜0.05）;2组患者治疗后动脉血压（收缩压、舒张压）水平均显著低于治疗前（P＜0.05）;治疗后2组炎症因子水平均明显低于治疗前（P＜0.01）,而研究组治疗后炎症因子水平明显低于对照组（P＜0.05）;研究组治疗后疗效明显高于对照组（P＜0.05）;而其无效率为显著低于对照组（P＜0.05）;研究组总有效率显著高于对照组（P＜0.05）。 结论该联合治疗在GERD合并房颤患者的疗效较好,降低炎性因子水平,显著改善症状及房颤的发生。     

Excess gastroesophageal reflux in patients with hiatus hernia is caused by mechanisms other than transient LES relaxations

BACKGROUND & AIMS: Esophageal acid exposure is higher in gastroesophageal reflux disease (GERD) patients with hiatus hernia than in those without. We investigated the effect of a sliding hiatus hernia on the mechanisms underlying spontaneous gastroesophageal reflux over 24 hours. METHODS: Twelve GERD patients with and 10 GERD patients without hiatus hernia were studied for 24 hours. Combined esophageal pH and manometric recordings of the pharynx, lower esophageal sphincter (LES), and stomach were performed using a multiple-lumen assembly incorporating a Dent sleeve connected to a portable water-perfused manometric system and a pH glass electrode. RESULTS: Patients with hiatus hernia had greater esophageal acid exposure (7.6% vs. 3.3%; P < 0.01) and more reflux episodes (3.1 vs. 1.8/h; P < 0.001) than those without. LES pressure, the incidence of transient LES relaxations (TLESRs), and the proportion of TLESRs associated with acid reflux were comparable in both groups. Both groups had equal numbers of reflux episodes associated with TLESRs and swallow-associated prolonged LES relaxations. Patients with hiatus hernia had more reflux associated with low LES pressure, swallow-associated normal LES relaxations, and straining during periods with low LES pressure. CONCLUSIONS: The excess reflux in GERD patients with hiatus hernia compared with those without is caused by malfunction of the gastroesophageal barrier during low LES pressure, swallow-associated normal LES relaxations, deep inspiration, and straining.     

Upright versus supine reflux in gastroesophageal reflux disease

BACKGROUND: Postural measures are early recommendations in the management of heartburn, and are aimed at preventing acid reflux through an incompetent lower esophageal sphincter (LES). However, LES incompetence is found in only a minority of patients, and transient LES relaxations, primarily in the upright position, are currently recognized as the main pathophysiological abnormality in gastroesophageal reflux disease (GERD). We investigated the importance of supine acid reflux in patients with GERD. METHODS: Upon review of their clinical, manometric, pH monitoring and endoscopic characteristics, 85 patients with reflux symptoms were classified into three groups: Group A (n=22), consisting of symptomatic patients without esophagitis or pathological reflux; group B (n=38), symptomatic patients with reflux but no endoscopic esophagitis; and group C (n=25), symptomatic patients with both ulcerative or complicated esophagitis and pathological reflux. RESULTS: All groups were similar in age distribution. Groups B and C had a higher prevalence of hiatal hernia and reflux symptoms. Manometry revealed similar LES pressures in groups A and B, but lower LES pressure in group C (P < 0.005). In groups A and B, supine reflux, in terms of percentage of time with pH < 4, was less pronounced than upright reflux (P < 0.0001). In contrast, group C supine reflux was as pronounced as the upright reflux. CONCLUSIONS: The majority of patients reflux in the upright position. Only patients with complicated esophagitis have significant bipositional acid reflux. These findings suggest that unless the patient has severe reflux disease, postural measures may not be indicated.     

反流性食管炎和非糜烂性反流病患者酸暴露与食管压力监测结果分析

目的通过对胃食管反流病（GERD）患者的酸暴露情况、食管下括约肌（LES）压力、食管体部压力、幽门螺杆菌（Hp）感染结果的比较，探讨反流性食管炎（RE）、非糜烂性反流病（NERD）的不同状况，为临床治疗提供科学依据。方法2001年10月至2005年7月，具有反流症状（烧心、反酸）的患者80例，胃镜检出RE31例，NERD45例，Barrett食管（BE）4例。行食管24hpH动态监测，并以De—Meester积分均值将GERD分为轻、中、重度，检测LES、食管体部即LES上方5cm、7cm、13cm（简记为L5、L7、L12）和食管上括约肌（UES）下方1cm、6cm、8cm（简记为U1、U6、U8）压力指标，并进行Hp感染的检查。结果RE、NERD两组患者食管24hpH酸暴露各指标的差异，无统计学意义（P〉0．05），De-Meester积分均值亦无统计学意义（P〉0．05）；轻、中、重度GERD患者食管24hpH监测指标具有统计学意义（P〈0．01）。RE、NERD两组患者LES压力、食管体部的L5、L7、L12、U6和u8压力监测指标无统计学意义（P〉0．05），只有RE组U1压力低于NERD组，差异有统计学意义（P〈0．05）；轻、中、重度GERD患者LES压力和食管体部的压力监测指标差异无统计学意义（P〉0．05）。RE和NERD组患者Hp感染率分别为16．1％和22．2％，其差异无统计学意义（P〉0．05），OR为1．309，95％C10．364～4．705。结论RE和NERD患者酸暴露、LES压力和食管体部压力等相应指标无明显差异；NERD在发病机制中，酸反流的强弱没有起到决定性作用。     

Impact of endoscopic suturing of the gastroesophageal junction on lower esophageal sphincter function and gastroesophageal reflux in patients with reflux disease

OBJECTIVES: Plication of the gastroesophageal junction by endoscopic suturing has been reported to improve symptoms and reduce acid exposure in patients with gastroesophageal reflux disease (GERD). The mechanisms underlying these effects are not well defined. The aims of our study were to determine the impact of endoscopic suturing of the gastroesophageal junction on lower esophageal sphincter (LES) function in patients with GERD. METHODS: In 15 patients (7 males) with GERD (heartburn, % time esophageal pH < 4 greater than 4%, +/- history of erosive esophagitis within 6 months), two plications were performed circumferentially 1 cm below the gastroesophageal junction. Endoscopy and combined postprandial esophageal manometry and pH monitoring were performed before and 6 months after treatment; 24-h ambulatory pH monitoring and symptom assessment were also performed before, and at 6 and 12 months after treatment. RESULTS: Six months after treatment, the rate of transient LES relaxations (tLESRs) was decreased by 37% (p < 0.05) and basal LES pressure had increased from 4.3 +/- 2.2 mmHg to 6.2 +/- 2.1 mmHg (p < 0.05). The rate of postprandial reflux events and acid exposure time were not altered. Endoscopic suturing significantly reduced 24-h esophageal acid exposure from 9.6% (9.0-12.1) to 7.4% (3.9-10.1) at 6 months, due predominantly to a reduction in upright acid exposure. The reduction in total 24-h acid exposure was sustained to 12 months. At repeat endoscopy, only one plication was evident in 6 patients (40%) at 6 months. Seven patients (47%) remained off medications at 6 and 12 months follow-up. CONCLUSIONS: In patients with GERD, endoscopic suturing of the gastroesophageal junction results in a reduction in the rate of tLESRs, and an increase in basal LES pressure. These changes in LES function result in only a modest reduction in gastroesophageal reflux.     

下食管括约肌运动和功能与胃食管反流病

目的　观察胃食管反流病 (GERD)患者与对照组餐前、餐后食管pH情况 ,下食管括约肌(LES )运动模式的变化以及酸反流事件与一过性下食管括约肌松弛 (TLESR )、低LES压力 (LESP)的关系。方法　两组受试者均接受连续性 4h食管压力测定 (分别为空腹和餐后 1、2、3h)和食管pH监测 (GERD组检测 4h ,对照组检测 2 4h)。结果　GERD组酸反流事件明显高于对照组 (P <0 0 5 )。两组间TLESR发生率差异无显著性 (P >0 0 5 ) ,但与空腹比较 ,两组餐后 1h和 2hTLESR发生率明显增多 ;GERD组伴有酸反流的TLESR明显高于对照组 (P <0 0 0 1)。 4 3% (2 9/ 6 8)的酸反流事件发生在TLESR期间。 31% (2 1/ 6 8)的酸反流事件出现于低LESP状态中。结论　GERD是多因素参与的病理过程。LES运动形式变化和功能不全是GERD的重要背景因素。     

Mechanisms of reflux perception in gastroesophageal reflux disease: a review

Patients with reflux symptoms often do not have excessive esophageal acid exposure, and patients with severe gastroesophageal reflux often do not have reflux symptoms. Understanding why different types of reflux induce symptoms in different patients is vital for addressing therapeutic gaps in the treatment of gastroesophageal reflux disease (GERD). Here we review studies providing insight into how gastroesophageal reflux is perceived, with a focus on comparing reflux characteristics and esophageal sensitivity among subgroups of patients with GERD. The available studies indicate that patients with nonerosive reflux disease have fewer acid reflux episodes and thus less esophageal acid exposure than patients with reflux esophagitis but perceive less intense stimuli because of greater esophageal sensitivity. Reflux characteristics other than acidity, such as the presence of bile, pepsin, liquid, or gas in reflux, and the proximal extent or volume of reflux, may also contribute to symptom perception. Factors contributing to greater esophageal sensitivity may include impaired mucosal barrier function, peripherally mediated esophageal sensitivity (enhanced esophageal receptor signaling), and centrally mediated esophageal sensitivity (physiological stressors, sensitization of spinal sensory neurons). Further insight into mechanisms of reflux perception may require a shift toward studies aimed at understanding predisposing cellular, molecular, and genetic factors.     

胃食管反流病食管酸暴露和食管动力学变化特征

目的探讨无效食管动力(IEM)在胃食管反流病(GERD)中的作用,以及体质量对食管酸暴露及食管动力的影响。方法77例GERD典型症状患者全部行食管高分辨率压力测定(HRM)和24 h食管动态pH监测,分析IEM及正常食管动力患者酸暴露情况。结果 77例典型GERD症状患者中病理性酸暴露者38例(49%),在病理性酸暴露组中IEM 9例(24%),正常酸暴露组中IEM 5例(13%)。IEM组LES压力低于食管动力正常组(15.15±3.60 vs 22.15±6.73,P0.01);IEM组总pH4时间(百分比)较正常食管动力组高[(14.78±3.8)%vs(4.30±2.68)%,P0.01];IEM组患者BMI值较高。结论 IEM在GERD中较常见,其食管动力障碍中绝大多数为IEM,IEM与食管远端酸暴露密切相关。