High-resolution Manometry In Patients Research Articles

Sedation and Endoscopy-Assisted High-Resolution Manometry (SEA-HRM) in Patients Who Previously Failed Standard Esophageal Manometry

Objectives: Esophageal high-resolution manometry (HRM) is the gold standard for diagnosing esophageal motility disorders, but it may be poorly tolerated and unsuccessful. We sought to evaluate a protocol for sedation and endoscopy-assisted (SEA) HRM in patients who previously failed standard HRM and assess patient perspectives towards it. Methods: Adult patients who previously failed HRM were prospectively enrolled. Under propofol sedation, an upper endoscopy was performed during which the HRM catheter was advanced under endoscopic visualization. If the catheter did not reach the stomach on its own, the endoscope itself or a snare was used to help it traverse the esophagogastric junction (EGJ). Results: Thirty patients participated (mean age 67.8, 70% female). The technical success of SEA-HRM was 100%. Twenty-two (73.3%) were diagnosed with a motility disorder including thirteen (43.3%) with achalasia. Eighteen (60%) had previously failed HRM due to discomfort/intolerance, while twelve (40%) failed due to catheter coiling in the esophagus. Subjects in the coiling group were more likely to need endoscopic assistance to traverse the EGJ (91.7% vs. 27.7%, p = 0.001) and have a motility disorder (100.0% vs. 55.6%, p = 0.010), including achalasia (75.0% vs. 22.2%, p = 0.004), compared to the discomfort/intolerance group. All patients preferred SEA-HRM and rated it higher than standard HRM (9.5 ± 1.3 vs. 1.9 ± 2.1, p = <0.001, on a scale of 1–10). Conclusions: SEA-HRM is a highly successful and well-tolerated option in patients who previously failed standard HRM. This should be the recommended approach in cases of failed HRM rather than secondary tests of esophageal motility.

280. MANOMETRIC FINDINGS IN PATIENTS WITH GIANT HIATAL HERNIA: OESOPHAGEAL PHYSIOLOGY APPEARS TO IMPROVE WITH SURGERY

Abstract Background High resolution manometry (HRM) is a gold standard test of oesophageal physiology. The use of HRM in patients with giant hiatus hernia (GHH) is limited by historical technical challenges as well as unclear clinical implications of the findings. The aim of this study is to demonstrate feasibility of HRM in patients with GHH and study effect of surgery on oesophageal physiology of patients undergoing GHH repair. Methods Data was extracted from a prospectively populated database of patients with giant (>30% stomach above diaphragm) hiatus hernias. All patients that underwent HRM before and after surgery were included. Manometric findings before and after surgery were analysed and compared. Patient symptoms were correlated with manometric findings. Results Inclusion criteria were met by 30 patients: 83% female, average age 74 (range 51-86), 93% had type III hernia containing on average 55% of stomach. All operations but one were performed laparoscopically. Pre-operatively average LOS length was 1.89cm which improved significantly to 2.19cm after surgery (p<0.05). Nine patients had ineffective oesophageal motility on index study which normalised post operatively in 4 patients. Lower oesophageal sphincter integrated relaxation pressure (IRP) increased post-operatively from 9.07mmHg to 11.52mmHg (p<0.05). Distal contractility improved post-operatively, however this was not significant. Most common presenting symptoms were dyspnoea, anaemia, retrosternal pain, and dysphagia. There was no association between dysphagia and manometric findings before or after surgery. Conclusion This study provides an insight into HRM findings in patients with GHH before and after surgery. Majority of the physiological parameters improved with surgery. There was no correlation of symptom of dysphagia with manometric findings.

Technical Success in Performing Esophageal High-Resolution Manometry in Patients with an Epiphrenic Diverticulum.

High-resolution manometry (HRM) is the gold standard for diagnosing esophageal motility disorders, yet it can be poorly tolerated and technically challenging. Epiphrenic diverticula (ED) are located in the distal esophagus and are associated with underlying motility disorders. ED patients (2008-2022) were retrospectively compared to achalasia patients (2008-2022) and all other patients (2021-2022) who underwent HRM at a single center. Complete success was defined as at least 7 interpretable swallows including measurements throughout the esophagus into the stomach. HRM studies involving children, previously treated achalasia, and sedation or endoscopic-assistance were excluded. 20 ED patients (mean age 66; 60% female) were compared to 76 achalasia patients and 199 controls. HRM was completely successful in 70.0% of ED patients, 85.5% of achalasia (p = 0.106 vs ED), and 91.0% of controls (p = 0.004 vs ED). Most failures in the ED and achalasia groups were due to inability to traverse the esophagogastric junction (EGJ), while patient intolerance was the main reason in controls. Half of the ED group had motility disorders (25% achalasia, 15% hypercontractile esophagus, 10% absent contractility). Large diverticulum size was inversely associated with technical success compared to small diverticulum size (40% vs 100%, p = 0.013), while the presence of a motility disorder did not significantly affect success (60% vs 88.9%, p = 0.303). In conclusion,ED is a predictor of unsuccessful HRM. This appears to be mainly related to an inability to traverse the EGJ due to the size of the diverticulum. Consideration should be given to alternative means of evaluating motility, such as endoscopy-assisted HRM, given the high likelihood of failure with traditional HRM.

Orientation of Lower Esophageal Sphincter Pressure Using Three-Dimensional High-Resolution Manometry in Patients with Achalasia: A Pilot Study.

This study was performed to evaluate the orientation of lower esophageal sphincter (LES) pressure in patients with untreated achalasia using three-dimensional high-resolution manometry (3D-HRM). The study involved 20 patients with untreated achalasia (10 men, 60 [47-74] years of age). The 3D-HRM assembly had 32 standard channels and 12 3D channels. During basal LES pressure measurements, the orientations of the LES high- and low-pressure zones were evaluated at end-expiration. The directional relationships between the orientation of the LES high- and low-pressure zones were also evaluated. The LES high-pressure zones were located on the greater curvature side in nine (45%) patients, from the greater curvature to posterior wall side in six (30%), and from the greater curvature to anterior wall side in five (25%). The LES high-pressure zones were located mainly on the greater curvature side, but there were some variations of the orientation among the patients. The LES low-pressure zones were most frequently located from the lesser curvature to the posterior wall side in 11 (55%) patients, from the lesser curvature to anterior wall side in 6 (30%), on the posterior wall side in 2 (10%), and on the anterior wall side in 1 (5%). Significant differences were found in the directional relationships between the orientation of the LES high- and low-pressure zones (P = 0.0053). This is the first report from Japan focusing on the LES pressure orientation using 3D-HRM. Such evaluation may be useful for clarifying the pathophysiology of achalasia.

S436 Role of 24 Hours Ambulatory pH Impedance Study and High Resolution Manometry in Patients With PPI Refractory Non-Erosive Reflux Disease

S436 Role of 24 Hours Ambulatory pH Impedance Study and High Resolution Manometry in Patients With PPI Refractory Non-Erosive Reflux Disease

How to Cope with Big Data in Functional Analysis of the Esophagus

Introduction: Esophageal motility disorders have a severe impact on patients’ quality of life. While high-resolution manometry (HRM) is the gold standard in the diagnosis of esophageal motility disorders, intermittently occurring muscular deficiencies often remain undiscovered if they do not lead to an intense level of discomfort or cause suffering in patients. Ambulatory long-term HRM allows us to study the circadian (dys)function of the esophagus in a unique way. With the prolonged examination period of 24 h, however, there is an immense increase in data which requires personnel and time for evaluation not available in clinical routine. Artificial intelligence (AI) might contribute here by performing an autonomous analysis. Methods: On the basis of 40 previously performed and manually tagged long-term HRM in patients with suspected temporary esophageal motility disorders, we implemented a supervised machine learning algorithm for automated swallow detection and classification. Results: For a set of 24 h of long-term HRM by means of this algorithm, the evaluation time could be reduced from 3 days to a core evaluation time of 11 min for automated swallow detection and clustering plus an additional 10–20 min of evaluation time, depending on the complexity and diversity of motility disorders in the examined patient. In 12.5% of patients with suggested esophageal motility disorders, AI-enabled long-term HRM was able to reveal new and relevant findings for subsequent therapy. Conclusion: This new approach paves the way to the clinical use of long-term HRM in patients with temporary esophageal motility disorders and might serve as an ideal and clinically relevant application of AI.

Comparison of High-Resolution Manometry in Patients Complaining of Dysphagia among Patients with or without Diabetes Mellitus

Introduction: Dysphagia is a common symptom that occurs in patients with diabetes mellitus (DM). There have been few prospective observational studies on esophageal motility disorders in DM using high-resolution manometry (HRM). This study aimed to clarify the characteristics of esophageal motility disorders using HRM in patients with dysphagia and compare them between DM and non-DM patients. Methods: Patients with dysphagia were prospectively recruited between October 2018 and July 2019. Patients (n = 89) underwent esophagogastroduodenoscopy and HRM and completed the Gastrointestinal Symptom Rating Scale (GSRS) questionnaire. Manometry parameters and motility disorder classifications were compared between DM and non-DM patients. We also investigated the differences in clinical backgrounds and questionnaire scores among DM patients with normal and abnormal manometry results. Results: A higher prevalence of esophageal motility disorder was observed in DM patients (60%, 21/35) compared to non-DM patients (29.6%, 16/54) (p = 0.001). The prevalence of minor disorders such as ineffective esophageal motor disorder and fragmented peristalsis was significantly higher (45 vs. 11%), and the distal contractile integral, integrated relaxation pressure, and contractile front velocity values were lower in the DM group. Among DM patients, those with abnormal esophageal motility had a significantly higher prevalence of neuropathy, retinopathy, and nephropathy, as well as higher reflux or constipation scores on the GSRS, than those with normal results. Conclusions: Among patients with dysphagia, the frequency of minor esophageal motility disorders was higher in DM patients than in non-DM patients. Abnormal esophageal motility related to poor esophageal clearance was associated with higher prevalence of diabetic complications.

Simple Manometric Index for Comprehensive Esophagogastric Junction Barrier Competency Against Gastroesophageal Reflux

The esophagogastric junction (EGJ) is an anatomic and physiologic barrier against gastroesophageal reflux. Comprehensive evaluation of EGJ barrier parameters using high-resolution manometry in patients with GERD has not been well established. We propose a simple index for comprehensive EGJ antireflux competency. Patients who underwent high-resolution manometry and 24-hour pH monitoring between January 2017 and September 2018 were included. Of these, patients with normal esophageal motility were selected. EGJ antireflux competency was assessed based on the following 3categories: anatomic configuration of the EGJ complex (ie EGJ morphology), backflow-preventive pressure on the lower esophageal sphincter (LES) (ie LES pressure integral), and backflow-promotive pressure across the LES (ie thoracoabdominal pressure gradient). Each category was scored on a scale of 0 to 2, applying clinically meaningful divisions, and a cumulative score was calculated (EGJ index: 0 to 6 points). DeMeester score > 14.72 indicated GERD. In total, 259 patients met study criteria. Of these, GERD was noted in 109 patients (42.1%). The pH parameters were gradually exacerbated, depending on the EGJ index. Good correlations were seen between EGJ index and previously proposed parameters for EGJ disruption, including LES length, LES pressure, and LES pressure integral (area under the curve > 0.9 [excellent validation]). No patient had GERD if the EGJ index score was 0. However, GERD was seen in as high as 85.7% of patients with the highest score of6. EGJ disruption severity was clearly graded based on a simple scoring method, which can improve evaluation and development of clinical strategies for GERD.

Indicators of Esophageal pH-Impedance Monitoring and High-Resolution Manometry in Patients with Various Forms of Gastroesophageal Reflux Disease

Aim. The aim of the study is to analyze the regularities of changes in the basic indicators of esophageal pH-impedance monitoring and high-resolution manometry in patients with non-erosive reflux disease (NERD), erosive reflux disease (ERD) and Barrett’s esophagus (BE) in comparison with healthy individuals.Materials and methods. 69 patients were examined, including 19 patients with NERD, 16 patients with ERD, 14 patients with BE and 20 individuals comprising the control group (CG). The gender structure was as follows: 44 male and 25 female patients. The average age of the examined patients was 46 years. All patients underwent 24-hour esophageal pH-impedance monitoring and high resolution manometry.Results. According to the data of 24-hour pH-impedance monitoring, the total time in the esophagus with pH < 4 was 2.4 % in the control group, 9 % in the NERD group, 20.25 % in the ERD group and 23.5 % in the patients with BE (p < 0.05). The average number of acid refluxes was 22.5 in CG, 61 in the NERD group, 77 in the ERD group and 86 in patients with BE (p < 0.05). The time of chemical clearance was 1.7 minutes in CG, 2.2 minutes in the group of patients with NERD, 2.9 minutes in the ERD group and 3 minutes in the BE group (p < 0.05). The mean nocturnal baseline impedance was 2483.5 Ohm in CG, 1775.0 Ohm in the NERD group, 771.0 Ohm in the ERD group and 911.0 Ohm in the BE group (p < 0.05). The normal parameters of the esophagogastric junction (EGJ) structure and function according to the data of highresolution manometry were observed among 85 % of the control group, 63 % of patients with NERD, 25 % of patients with ERD and 36 % of BE group. The presence of hiatal hernia (HH) and/or hypotension of lower esophageal sphincter (LES) was observed in 15 % of patients from the CG, in 37 % of patients with NERD, in 75 % of patients with ERD and in 64 % of patients with BE. The normal parameters of the motor function of the esophagus were observed in CG (85 %), as well as in patients with NERD (79 %). In patients with ERB and BE, normal motor activity was noted in 25 % and 29 % of the cases, respectively. Disturbances of the motor function of the thoracic esophagus in CG were represented in 10 % of the cases by ineffective peristalsis and hypercontractility in the form of distal esophagospasm in 5 % of the cases. In the NERD group, 16 % of patients had ineffective peristalsis and 5 % of patients had hypercontractility in the form of a hypercontractile esophagus. In patients of ERD and BE groups, the disorders of the motor function of the thoracic esophagus were predominantly represented by ineffective peristalsis, in 75 % and 50 % of the patients, respectively. In addition, in the group of patients with BE, in 21 % of the cases, motor function disorders were observed in the form of absence of thoracic esophagus contractions.Conclusion. It is shown that such indicators as increased level of acid exposure, increased amount of acid reflux, slowed chemical clearance, lowered mean nocturnal baseline impedance, as well as disorders in the structure and function of the esophageal-gastric junction and motility of the thoracic esophagus are associated with the severity of GERD.

Rapid drink challenge test during esophageal high resolution manometry in patients with esophago-gastric junction outflow obstruction.

Esophago-gastric junction (EGJ) outflow obstruction is of unclear significance. Rapid drink challenge (RDC) test is easy to perform during esophageal high resolution manometry. We aimed to assess the yield of RDC test in patients with EGJ outflow obstruction. Manometry studies of patients with EGJ outflow obstruction according to the Chicago Classification v3.0 were retrospectively reviewed. Pan-esophageal pressurization (PEP), esophageal shortening, and pressure gradient across the EGJ were analyzed during RDC test (200-mL free drinking in sitting position) and compared according to the causes of EGJ outflow obstruction determined by charts review. Seventy-five patients (29 males, mean age 62years) were included. Causes of EGJ outflow obstruction were previous esophago-gastric surgery (40%), incomplete form of achalasia (7%), mediastinal neoplasia (7%), other associated conditions (21%), and undetermined (25%). Rapid drink challenge test was successfully performed in 70 patients and associated with PEP and shortening in 41% and 13%, respectively. The causes of EGJ outflow obstruction were similarly distributed in patients with and without PEP during RDC test. Esophageal shortening tended to be more likely in patients with definitive findings of obstruction (achalasia, previous surgery, neoplasia) than in the others. Dysphagia was more severe in patients with PEP and/or shortening during RDC test compared to those without. Pan-esophageal pressurization and esophageal shortening were associated with symptoms severity but did not predict the cause of this disorder. Further prospective studies are necessary to determine if RDC test could help to select patients who might benefit from treatment.

High-resolution manometry in patients with and without globus pharyngeus and/or symptoms of laryngopharyngeal reflux

BackgroundGlobus pharyngeus is common and has a low cure rate. Its etiology is complex and reported to be associated with laryngopharyngeal reflux (LPR). However, some patients with globus do not exhibit any reflux symptoms or respond to proton pump inhibitors (PPIs) treatments. The purpose of this study was to clarify the related risk factors of these patients with a final objective of improving the curative effect.MethodsForty two patients afflicted with globus pharyngeus (G group) and 38 patients without globus pharyngeus (NG group) were included in this study. According to the laryngopharyngeal Reflux Symptom Index and the response to PPIs treatments, the patients were further divided into reflux groups (G-R, NG-R) and non-reflux groups (G-NR, NG-NR). High Resolution Manometry (HRM) was performed to assess esophageal motility. Questionnaires, including categories such as life exposure factors, were conducted.Resultsa) The average resting and residual pressures of the upper esophageal sphincter (UES) in the G-NR group was higher than in the NG-NR and NG-R groups (P < 0.05). b) The average resting and residual pressures of the lower esophageal sphincter showed no differences between the G-NR group and the NG-NR group (P > 0.05). c) The esophageal distal contractile integral score of the G-NR group was not different from the NG-NR group (P > 0.05). d) Compared to the NG-NR group, the G-NR group showed higher incidence of stress, smoking, drinking, high salt and anxiety (P < 0.05).ConclusionsGlobus pharyngeus without LPR may occur due to high UES pressure. Stress, smoking, alcoholic drinking, high salt and anxiety may be its risk factors.

Oesophageal motor function in chronic intestinal idiopathic pseudo-obstruction: A study with high-resolution manometry

BackgroundChronic intestinal idiopathic pseudo-obstruction (idiopathic CIPO) is a rare heterogeneous condition for which the different phenotypes are difficult to be established. Oesophageal motility has shown to be impaired in patients with idiopathic CIPO at traditional manometry, whereas no studies have assessed it by high resolution manometry (HRM). AimsTo evaluate oesophageal motility by HRM in patients with idiopathic CIPO. Methods14 patients with idiopathic CIPO underwent oesophageal HRM. Multiple rapid swallows (MRS) were performed in order to evaluate contraction reserve. The Chicago Classification 3.0 was used to classify the oesophageal motility disorders. ResultsOne idiopathic CIPO patient had type-II achalasia, one aperistalsis and 12 had minor disorder of peristalsis (11 ineffective oesophageal motility and one fragmented peristalsis). These minor disorders were not significantly different from those of 50 other consecutive patients who underwent HRM for dysphagia or GERD and received the diagnosis of ineffective oesophageal motility. Three of the 12 idiopathic CIPO patients with minor disorder of peristalsis had no contraction reserve after MRS. ConclusionsHRM is able to identify different grades of oesophageal motor impairment in patients with idiopathic CIPO. Presence of major oesophageal dismotility or absent contraction reserve suggest a more severe and widespread motor disorder.

Comparison Between Timed Barium Swallow and Esophageal Function Testing With High-Resolution Manometry In Patients With Esophagogastric Junction Outflow Obstruction (EGJOO)

Comparison Between Timed Barium Swallow and Esophageal Function Testing With High-Resolution Manometry In Patients With Esophagogastric Junction Outflow Obstruction (EGJOO)

High-resolution Manometry in Patients with Gastroesophageal Reflux Disease Before and After Fundoplication.

Background/AimsThe study aimed to determine pre- and post-fundoplication esophagogastric junction (EGJ) pressure and esophageal peristalsis by high-resolution manometry (HRM) in patients with gastroesophageal reflux disease (GERD).MethodsPre-operative and post-operative HRM data from 25 patients with GERD were analyzed using ManoView version 2.0.1. with updated software for Chicago classification and pressure topography. The study involved swallowing water boluses of 10 mL in the upright position.ResultsSignificant increase of mean basal EGJ pressure and minimal basal EGJ pressure was found in post-operative as compared with preoperative patients (P < 0.05 and P < 0.001, respectively). Integrated relaxation pressure (IRP) reached higher values in post-operative patients than in pre-operative patients (P < 0.001). Intra-bolus pressure (IBP) was significantly higher (P < 0.05) and contractile front velocity (CFV) was slower (P < 0.01) in post-operative patients than in pre-operative patients. Moreover significant increase of distal contractile integral (DCI) was found in post-operative patients (P < 0.05). Hiatal hernia was detected by HRM in 11 pre-operative patients. Fifteen out of 25 post-operative patients complained of dysphagia.ConclusionsFundoplication restores the antireflux barrier by reinforcing EGJ basal pressures, repairing hiatal hernias, and enhances peristaltic function of the esophagus by increasing DCI. However slight IRP elevation found in post-fundoplication patients may result in bolus pressurization and motility disorders.

Upper Esophageal Sphincter Evaluation of High Resolution Manometry in Patients with Muscle Tension Dysphagia

Upper Esophageal Sphincter Evaluation of High Resolution Manometry in Patients with Muscle Tension Dysphagia

Loss of Esophageal Peristaltic Reserve Determined by Response to Multiple Rapid Swallows Utilizing High-Resolution Manometry in Patients with Eosinophilic Esophagitis

Loss of Esophageal Peristaltic Reserve Determined by Response to Multiple Rapid Swallows Utilizing High-Resolution Manometry in Patients with Eosinophilic Esophagitis

High Resolution Esophageal Manometry in Patients with Chagas Disease: A Cross-Sectional Evaluation.

IntroductionGastrointestinal involvement affects 30–40% of the patients with chronic Chagas disease. Esophageal symptoms appear once the structural damage is established. Little is known about the usefulness of high resolution manometry to early identification of esophageal involvement.MethodWe performed a cross-sectional study at the Vall d’Hebron University Hospital (Barcelona, Spain) between May 2011 and April 2012. Consecutive patients diagnosed with Chagas disease in the chronic phase were offered to participate. All patients underwent a structured questionnaire about digestive symptoms, a barium esophagogram (Rezende classification) and an esophageal high resolution manometry (HRM). A control group of patients with heartburn who underwent an esophageal HRM in our hospital was selected.Results62 out of 73 patients that were included in the study fulfilled the study protocol. The median age of the Chagas disease group (CG) was 37 (IQR 32–45) years, and 42 (67.7%) patients were female. Twenty-seven (43.5%) patients had esophageal symptoms, heartburn being the most frequent. Esophagogram was abnormal in 5 (8.77%). The esophageal HRM in the CG showed a pathological motility pattern in 14 patients (22.6%). All of them had minor disorders of the peristalsis (13 with ineffective esophageal motility and 1 with fragmented peristalsis). Hypotonic lower esophageal sphincter was found more frequently in the CG than in the control group (21% vs 3.3%; p<0.01). Upper esophageal sphincter was hypertonic in 22 (35.5%) and hypotonic in 1 patient. When comparing specific manometric parameters or patterns in the CG according to the presence of symptoms or esophagogram no statistically significant association were seen, except for distal latency.ConclusionThe esophageal involvement measured by HRM in patients with chronic Chagas disease in our cohort is 22.6%. All the patients with esophageal alterations had minor disorders of the peristalsis. Symptoms and esophagogram results did not correlate with the HRM results.

Multiple Rapid Swallow Maneuver Enhances the Clinical Utility of High-Resolution Manometry in Patients Showing Ineffective Esophageal Motility.

The clinical significance of ineffective esophageal motility (IEM) together with multiple rapid swallow (MRS) has not been yet evaluated in the Chicago Classification v3.0. This study evaluated the adjunctive role of MRS in IEM and determined the criteria of abnormal MRS to maximize the utility of IEM. We analyzed 186 patients showing IEM or normal esophageal motility (NEM), who underwent esophageal high-resolution impedance–manometry for esophageal symptoms. Two different criteria for abnormal MRS were applied to IEM subjects, resulting in 2 corresponding subgroups: IEM-A when distal contractile integral (DCI) ratio between an average wet swallows and MRS contraction was <1 and IEM-B when MRS contraction DCI was <450 mm Hg-s-cm. One IEM subject inadequately performed MRS. Among the remaining 52 IEM subjects, 18 (34.6%) were classified into IEM-A and 23 (44.2%) into IEM-B. IEM subjects showed less complete bolus transit (median 0.0%, interquartile range 0.0–20.0% vs 60.0%, 30.0–80.0; P < 0.001) resulting in higher impaired bolus transit than NEM subjects (98.1% vs 66.9%, P = 0.001). IEM-B subjects showed additionally higher pathologic bolus exposure than NEM subjects (55.6% vs 29.3%, P = 0.001), whereas IEM-A subjects could not. Although IEM-B subjects had the highest prevalence of gastroesophageal reflux disease among the subjects groups, it did not reach statistical significance. In conclusion, IEM patients with abnormal MRS contraction have an increased risk of prolonged bolus clearance, poor bolus transit, and pathologic bolus exposure. IEM patients need to be assessed concerning whether MRS contraction DCI is <450 mm Hg-s-cm to segregate clinically relevant patients.

978 Adjunctive Multiple Rapid Swallows Increases Sensitivity of High Resolution Manometry in Patients With Dysphagia

978 Adjunctive Multiple Rapid Swallows Increases Sensitivity of High Resolution Manometry in Patients With Dysphagia

Tu1177 Identification of Hiatal Hernia by High Resolution Manometry in Patients Before and After Fundoplication

Tu1177 Identification of Hiatal Hernia by High Resolution Manometry in Patients Before and After Fundoplication