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Ribolsi M, De Bortoli N, Frazzoni M, Marchetti L, Savarino E, Cicala M. Proximal esophageal impedance baseline increases the yield of impedance-pH and is associated with response to PPIs in chronic cough patients. Neurogastroenterol Motil 2024; 36:e14775. [PMID: 38424679 DOI: 10.1111/nmo.14775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
BACKGROUND Chronic cough significantly impairs the quality of life. Although various studies focused on MNBI as assessed in the distal esophagus, scarce data are available on the clinical value of proximal measurements. AIM To investigate the role of proximal MNBI in the workup of patients with chronic cough and its ability to predict PPI response. METHODS Demographic, clinical, endoscopy findings, impedance-pH and HRM tracings from consecutive cough patients were evaluated. MNBI was calculated at proximal and distal esophagus. RESULTS One hundred and sixty four patients were included. In addition to traditional variables, when considering also the PSPW index or MNBI at 3 cm or 15 cm, the proportion of patients with pathological impedance-pH monitoring significantly increased. 70/164 patients were responders, while 94 (57.3%) were non-responder to double PPI dose (p < 0.05). Patients with pathologic MNBI at 3 cm and/or 15 cm as well as those with pathologic PSPW index were characterized by a significantly higher proportion of responders than that observed among patients with normal impedance-pH variables (p < 0.001). The proportion of responders with pathological MNBI at 15 cm was significantly higher than the proportion of responders with pathological MNBI at 3 cm (82.8% vs. 64.3%, p < 0.05). At multivariable model, pathological MNBI at both 3 cm and 15 cm as well as PSPW index were associated with PPI responsiveness. The strongest association with PPI response was observed for MNBI at 15 cm. CONCLUSIONS The assessment of MNBI at proximal esophagus increases the diagnostic yield of impedance-pH monitoring and may represent a useful predictor of PPI responsiveness in the cumbersome clinical setting of suspected reflux-related cough.
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Affiliation(s)
- Mentore Ribolsi
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Roma, Italy
| | - Nicola De Bortoli
- Department of New Technologies and Translational Research in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Marzio Frazzoni
- Digestive Pathophysiology Unit, Azienda Ospedaliero-Universitaria di Modena Ospedale Civile di Baggiovara, Modena, Italy
| | - Lorenzo Marchetti
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Roma, Italy
| | - Edoardo Savarino
- Department of Surgery, Oncology and Gastroenterology, University of Padua School of Medicine and Surgery, Padova, Italy
| | - Michele Cicala
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Roma, Italy
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Ribolsi M, Marchetti L, Savarino E, Gyawali CP, Cicala M. Chicago Classification v4.0 Stratifies Acid Burden and Abnormal Impedance-pH Variables Better Than Chicago Classification v3.0 Chicago Classification v4.0 and GERD. Am J Gastroenterol 2024; 119:206-209. [PMID: 37655704 DOI: 10.14309/ajg.0000000000002491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/29/2023] [Indexed: 09/02/2023]
Abstract
INTRODUCTION Gastroesophageal reflux disease (GERD) severity increases with esophageal body hypomotility, but the impact of Chicago Classification (CC) v4.0 criteria on GERD diagnosis is incompletely understood. METHODS In patients with GERD evaluated with high-resolution manometry and pH-impedance monitoring, CCv3.0 and CCv4.0 diagnoses were compared. RESULTS In 247 patients, hypomotility diagnosis decreased from 45.3% (CCv3.0) to 30.0% (CCv4.0, P < 0.001). In contrast, within patients with ineffective esophageal motility, proportions with pathological acid exposure increased from 38% (CCv3.0) to 88% (CCv4.0); baseline impedance and esophageal clearance demonstrated similar findings ( P < 0.05 for each comparison). DISCUSSION CCv4.0 hypomotility criteria are more specific in supporting GERD evidence compared with CCv3.0.
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Affiliation(s)
- Mentore Ribolsi
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Roma, Italy
| | - Lorenzo Marchetti
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Roma, Italy
| | - Edoardo Savarino
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padova, Italy
| | - C Prakash Gyawali
- Division of Gastroenterology, Washington University School of Medicine, St. Louis, USA
| | - Michele Cicala
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Roma, Italy
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Ribolsi M, Savarino E. Towards a better diagnosis of gastro esophageal reflux disease. Expert Rev Gastroenterol Hepatol 2023; 17:999-1010. [PMID: 37800858 DOI: 10.1080/17474124.2023.2267435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 10/03/2023] [Indexed: 10/07/2023]
Abstract
INTRODUCTION GERD is a common disorder and is characterized by the presence of typical or atypical symptoms. In GERD patients, the presence of mucosal alterations in endoscopy is detected in up to 30% of individuals. The clinical presentation of GERD patients may be complex and their management is challenging, due to the heterogeneous clinical presentation. The present review has been performed searching all relevant articles in this field, over the past years, using PubMed database. AREAS COVERED The diagnosis and management of GERD have been significantly improved in the last years due to the increasing availability of reflux monitoring techniques and the implementation of new procedures in the therapeutic armamentarium. Beside traditional impedance-pH variables, new metrics have been developed, increasing the diagnostic yield of reflux monitoring and better predicting the treatment response. Traditional pharmacological treatments include acid-suppressive-therapy and/or anti-acid. On the other hand, surgical treatment and, more recently, endoscopic procedures represent a promising field in the therapeutic approach. EXPERT OPINION Diagnosis and treatment of GERD still represent a challenging area. However, we believe that an accurate upfront evaluation is, nowadays, necessary in addressing patients with GERD to a more accurate diagnosis as well as to the best treatment options.
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Affiliation(s)
- Mentore Ribolsi
- Unit of Gastroenterology and Digestive Endoscopy, Campus Bio Medico University, Rome, Italy
| | - Edoardo Savarino
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padova, Italy
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Ribolsi M, Savarino E, Frazzoni M, Cicala M. Prospective validation of reflux monitoring by impedance-pH in predicting PPI response in typical GERD. Dig Liver Dis 2023; 55:721-726. [PMID: 36572569 DOI: 10.1016/j.dld.2022.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 05/29/2023]
Abstract
BACKGROUND The Lyon Consensus proposed a hierarchical approach to GERD diagnosis based on conventional and new impedance-pH metrics, namely acid exposure time (AET), number of reflux episodes, post-reflux swallow-induced peristaltic wave (PSPW) index, and mean nocturnal baseline impedance (MNBI). AIMS To define the value of conventional and new impedance-pH parameters as predictors of response to label-dose PPI in typical GERD. METHODS Consecutive adult patients with typical esophageal symptoms were prospectively studied with impedance-pH monitoring and treated with 8-week label-dose PPI. At the end of the PPI course, symptoms response was assessed. RESULTS Among 255 patients who entered the study, 168 (65.9%) reported symptom remission. At ROC analysis, both MNBI and PSPW index were significantly associated to PPI responsiveness with AUC of 0.783 and 0.801, respectively. Cut-off values of 1747Ω for MNBI and 50% for PSPW index were identified as discriminators between response and non-response to label-dose PPI. At multivariate analysis, MNBI, PSPW index, and AET >6% were efficient predictors of PPI responses (OR 3, 5.4 and 2.3, respectively). Number of reflux episodes did not predict PPI response. CONCLUSIONS The novel MII-pH variables together with pathological are highly predictive of response of the typical GERD syndrome to label-dose PPI.
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Affiliation(s)
- Mentore Ribolsi
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Via Alvaro del Portillo 200 - 00128, Roma, Italy.
| | - Edoardo Savarino
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padova, Italy
| | - Marzio Frazzoni
- Digestive Pathophysiology Unit, Baggiovara Hospital, Modena, Italy
| | - Michele Cicala
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Via Alvaro del Portillo 200 - 00128, Roma, Italy
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Ribolsi M, Marchetti L, Blasi V, Cicala M. Anxiety correlates with excessive air swallowing and PPI refractoriness in patients with concomitant symptoms of GERD and functional dyspepsia. Neurogastroenterol Motil 2023:e14550. [PMID: 36786093 DOI: 10.1111/nmo.14550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/18/2023] [Accepted: 02/01/2023] [Indexed: 02/15/2023]
Abstract
BACKGROUND Anxiety may exacerbate GERD and FD symptoms perception and reduce quality of life. As many as 50% of patients with GERD symptoms have incomplete relief with PPI therapy, and psychological factors may influence PPI responsiveness. AIM The potential relationship between anxiety, excessive air swallowing, and PPI responsiveness was evaluated. METHODS GERD patients with concomitant FD were prospectively evaluated. Validated structured questionnaires were used to evaluate anxiety, GERD, and FD symptoms. All patients were treated, within the previous year, with at least 8 weeks of standard dose PPI therapy. RESULTS One hundred sixty-one patients were included. Frequency of non-responders in patients with moderate/severe anxiety was significantly higher compared to patients with mild anxiety (62.7% vs. 37.3%, p < 0.01). Patients with moderate/severe anxiety displayed a significantly higher mean FD symptoms score value compared to patients with mild anxiety. A significantly higher mean number of air swallows were observed in patients with moderate/severe anxiety. At ROC analysis, air swallows and mixed reflux episodes were significantly associated with the presence of PPI refractoriness (AUC: 0.725, 95% CI: 0.645-0.805 and 0.768, 0.692-0.843). According to univariate analysis, an abnormal number of air swallows, mixed reflux episodes and presence of moderate/severe anxiety was significantly associated with PPI refractoriness. CONCLUSION Our results, if confirmed in in a larger, prospective clinical and therapeutic study, demonstrate the usefulness of an up-front evaluation with anxiety questionnaire and esophageal testing in patients with a broad spectrum of upper gastrointestinal symptoms who fail to respond to PPI treatment, supporting the option of alternative treatment modalities.
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Affiliation(s)
- Mentore Ribolsi
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Rome, Italy
| | - Lorenzo Marchetti
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Rome, Italy
| | - Valentina Blasi
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Rome, Italy
| | - Michele Cicala
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Rome, Italy
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Relevance of Excessive Air Swallowing in GERD Patients With Concomitant Functional Dyspepsia and Poor Response to PPI Therapy. J Clin Gastroenterol 2022; 57:466-471. [PMID: 35648971 DOI: 10.1097/mcg.0000000000001728] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/09/2022] [Indexed: 12/10/2022]
Abstract
GOALS The present study was aimed at evaluating the possible role of air swallowing in the association between gastroesophageal reflux disease (GERD) symptoms and concomitant functional dyspepsia (FD) and their role in GERD symptom persistence despite proton pump inhibitor (PPI) therapy. BACKGROUND It has been shown that individuals with excessive air swallowing experience FD. It has been also demonstrated that a consistent group of GERD patients not responding to PPI therapy swallow more air during mealtime and also have more mixed refluxes. MATERIALS AND METHODS Multichannel intraluminal impedance-pH tracings from consecutive patients were retrospectively evaluated. A validated structured questionnaire was used to evaluate GERD and concomitant FD symptoms. All patients were treated, within the previous year, with at least 8 weeks of standard-dose PPI therapy. RESULTS A total of 35 patients with conclusive GERD, 35 patients with reflux hypersensitivity, and 35 with functional heartburn were studied. A direct relationship was observed between the number of air swallows and of mixed refluxes (R=0.64). At receiver operating characteristic curve analysis, air swallows and mixed refluxes were significantly associated to the presence of FD and PPI refractoriness. An air swallow cutoff of 107 episodes/24 hours was identified to discriminate patients with and without FD (sensitivity: 87%, specificity: 82.8%). A mixed reflux cutoff of 34 episodes/24 hours was identified to discriminate PPI responders from nonresponders (sensitivity: 84.8%, specificity: 69%). At multivariate analysis, an abnormal number of air swallows and of mixed refluxes were significantly associated to FD and PPI refractoriness. CONCLUSION Our study highlights the relevant role of excessive air swallowing in eliciting both dyspepsia and refractoriness of typical GERD symptoms to PPI therapy.
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Ribolsi M, Savarino E. Letter: the potential link between oesophageal hypervigilance, visceral anxiety, increased swallow rate and oesophageal mucosal integrity. Aliment Pharmacol Ther 2022; 55:756-757. [PMID: 35245957 DOI: 10.1111/apt.16783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mentore Ribolsi
- Department of Digestive Diseases, Campus Bio Medico University of Rome, Rome, Italy
| | - Edoardo Savarino
- Gastroenterology Unit, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padova, Italy
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The Results From Up-Front Esophageal Testing Predict Proton Pump Inhibitor Response in Patients With Chronic Cough. Am J Gastroenterol 2021; 116:2199-2206. [PMID: 34287222 DOI: 10.14309/ajg.0000000000001389] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/24/2021] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The clinical management of chronic cough patients is challenging, and their response to proton pump inhibitors (PPIs) is considered as unsatisfactory. Few data concerning the association between impedance-pH variables and PPI response in these patients are available. Mean nocturnal baseline impedance (MNBI) and postreflux swallow-induced peristaltic wave (PSPW) index increase the diagnostic yield of impedance-pH in gastroesophageal reflux disease. METHODS Demographic, clinical, and endoscopy findings; impedance-pH; and high-resolution manometry tracings from consecutive patients assessed for cough were evaluated. Univariable and multivariable regression models were generated to evaluate the association between impedance-pH and high-resolution manometry findings, endoscopic and clinical characteristics, and PPI response. RESULTS A total of 178 patients were included. Eighty-four of 178 cough patients (47.2%) displayed grade C-D erosive esophagitis or were characterized by a pathological acid exposure time (AET) and/or positive symptom association probability/symptom index. When also considering MNBI and PSPW, 135 of 178 patients (75.8%) were characterized by the evidence of reflux disease (P < 0.001). Eighty patients (44.9%) had cough responding to PPIs, whereas 98 (55.1%) were nonresponders (P = 0.071). At the receiver operating characteristic analysis, both PSPW index and MNBI were associated to PPI responsiveness. MNBI and PSPW index showed higher sensitivity in predicting PPI response compared with AET and symptom association probability/symptom index. The area under the curves of MNBI and PSPW index were significantly higher than that of AET (P < 0.01 for both comparisons). When patients were stratified according to AET and excluding those with erosive esophagitis, pathological MNBI or PSPW index, hiatal hernia, and hypomotility features were associated to PPI response in all groups. DISCUSSION Our results demonstrate the usefulness of an up-front esophageal testing in discriminating reflux-related cough patients and predicting PPI response.
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Ribolsi M, Frazzoni M, Marabotto E, De Carlo G, Ziola S, Maniero D, Balestrieri P, Cicala M, Savarino E. Novel impedance-pH parameters are associated with proton pump inhibitor response in patients with inconclusive diagnosis of gastro-oesophageal reflux disease according to Lyon Consensus. Aliment Pharmacol Ther 2021; 54:412-418. [PMID: 34181753 PMCID: PMC8361916 DOI: 10.1111/apt.16481] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 05/26/2021] [Accepted: 06/01/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND The Lyon Consensus delineates impedance-pH parameters that can demonstrate/exclude gastro-oesophageal reflux disease (GERD). In patients with acid exposure time between 4% and 6%, GERD diagnosis has been considered inconclusive. In these cases, mean nocturnal baseline impedance (MNBI) and post-reflux swallow-induced peristaltic wave (PSPW) index may either confirm or refute GERD diagnosis and represent predictors of proton pump inhibitor (PPI) response. AIMS To investigate the diagnostic yield of MNBI and PSPW index and their relationship with PPI response in patients with inconclusive GERD diagnosis. METHODS Review of impedance-pH tracings from PPI responder/non-responder patients with typical reflux symptoms. Multivariate regression analysis was performed to determine the association of MNBI and PSPW index to PPI response. RESULTS Among 233 patients evaluated, 145/233 (62.2%) were PPI responders; 62 had conclusive and 65 inconclusive evidence of GERD, 46 had reflux hypersensitivity, and 60 functional heartburn. Abnormal MNBI and PSPW index were significantly more frequent in inconclusive GERD as compared to the functional heartburn group (P < 0.001). Within the inconclusive GERD group, 35/65 (54%) patients were PPI responders and displayed a significantly higher proportion of cases with pathological MNBI or PSPW index as compared to non-responders (32/35 [91.4%] and 30/35 [85.7%] vs 9/30 [30%] and 7/30 [23.3%], P < 0.001). By multivariate analysis, pathological PSPW index and/or MNBI values were significantly associated with PPI response in all groups. CONCLUSIONS The present study highlights the value of MNBI and PSPW index as adjunctive metrics in characterising patients with inconclusive evidence of GERD and identifying those responsive to PPI treatment.
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Affiliation(s)
- Mentore Ribolsi
- Department of Digestive DiseasesCampus Bio Medico University of RomeRomaItaly
| | - Marzio Frazzoni
- Digestive Pathophysiology UnitBaggiovara HospitalModenaItaly
| | | | - Giovanni De Carlo
- Department of Digestive DiseasesCampus Bio Medico University of RomeRomaItaly
| | | | - Daria Maniero
- Gastroenterology UnitDepartment of Surgery, Oncology and GastroenterologyUniversity of PaduaPadovaItaly
| | - Paola Balestrieri
- Department of Digestive DiseasesCampus Bio Medico University of RomeRomaItaly
| | - Michele Cicala
- Department of Digestive DiseasesCampus Bio Medico University of RomeRomaItaly
| | - Edoardo Savarino
- Gastroenterology UnitDepartment of Surgery, Oncology and GastroenterologyUniversity of PaduaPadovaItaly
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Ribolsi M, Savarino E, Rogers B, Rengarajan A, Coletta MD, Ghisa M, Cicala M, Gyawali CP. Patients With Definite and Inconclusive Evidence of Reflux According to Lyon Consensus Display Similar Motility and Esophagogastric Junction Characteristics. J Neurogastroenterol Motil 2021; 27:565-573. [PMID: 34045366 PMCID: PMC8521480 DOI: 10.5056/jnm20158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/13/2020] [Accepted: 11/17/2020] [Indexed: 11/20/2022] Open
Abstract
Background/Aims The role of esophageal high-resolution manometry (HRM) within Lyon consensus phenotypes, especially patients with inconclusive gastroesophageal reflux disease (GERD) evidence, has not been fully investigated. In this multicenter, observational study we aim to compare HRM parameters in patients with GERD stratified according to the Lyon consensus. Methods Clinical and endoscopic data, HRM and multichannel intraluminal impedance-pH (MII-pH) studies performed off proton pump inhibitor therapy in patients with esophageal GERD symptoms were reviewed. Lyon consensus criteria identified pathological GERD, reflux hypersensitivity, functional heartburn, and inconclusive GERD. Patients, with inconclusive GERD were further subdivided into 2 groups based on total reflux numbers (≤ 80 or > 80 reflux episodes) during the MII-pH recording time. Results A total of 264 patients formed the study cohort. Pathological GERD and inconclusive GERD patients were associated with higher numbers of reflux episodes, lower mean nocturnal baseline impedance (MNBI) values, and a higher proportion of patients with pathologic MNBI compared to functional heartburn (P < 0.05 for each comparison). On multivariate analysis, pathological GERD and inconclusive GERD patients, both with ≤ 80 or > 80 reflux episodes, were significantly associated with pathologic esophagogastric junction contractile integral values and with presence of hiatus hernia (type 2/3 esophagogastric junction). Patients with inconclusive GERD and > 80 reflux episodes were significantly associated with fragmented peristalsis and ineffective esophageal motility whilst inconclusive GERD with ≤ 80 reflux episodes were significantly associated with fragmented peristalsis. Conclusion Esophageal motor parameters on HRM are similar between pathologic and inconclusive GERD according to the Lyon consensus.
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Affiliation(s)
- Mentore Ribolsi
- Unit of Gastroenterology, Campus Bio Medico University, Rome, Italy
| | - Edoardo Savarino
- Division of Gastroenterology, Department of Surgical, Oncological and Gastroenterological Sciences, University of Padua, Padua, Italy
| | - Benjamin Rogers
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Arvind Rengarajan
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Marco Della Coletta
- Division of Gastroenterology, Department of Surgical, Oncological and Gastroenterological Sciences, University of Padua, Padua, Italy
| | - Matteo Ghisa
- Division of Gastroenterology, Department of Surgical, Oncological and Gastroenterological Sciences, University of Padua, Padua, Italy
| | - Michele Cicala
- Unit of Gastroenterology, Campus Bio Medico University, Rome, Italy
| | - Chandra Prakash Gyawali
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
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Ribolsi M, de Carlo G, Balestrieri P, Guarino MPL, Cicala M. Understanding the relationship between esophageal motor disorders and reflux disease. Expert Rev Gastroenterol Hepatol 2020; 14:933-940. [PMID: 32658587 DOI: 10.1080/17474124.2020.1791703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
INTRODUCTION The management of gastro-esophageal reflux disease (GERD) patients is often complex as the clinical presentation is heterogeneous and the mechanisms underlying symptoms are multifactorial. In the past decades, investigations conducted with conventional manometry and, above all, the more accurate high resolution manometry (HRM), helped us in exploring the field of esophageal motility and in understanding the link between motor features and GERD pathogenesis. AREAS COVERED Several studies carried out with conventional manometry and HRM have confirmed a relevant role of esophageal motor function in GERD pathogenesis. In particular, HRM studies have shown a direct correlation between impaired esophageal body motility, disruption of the esophagogastric junction and reflux burden. These findings impact the clinical and therapeutical management of GERD patients. Moreover, HRM findings might be helpful in evaluating patients with proton pump inhibitor (PPI) resistance and inconclusive evidences of GERD. EXPERT OPINION The relationship between esophageal motility and GERD pathogenesis needs to be further evaluated by multicenter outcome studies involving a large number of GERD patients and healthy controls. However, other more promising areas could be progressed.
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Affiliation(s)
- Mentore Ribolsi
- Unit of Gastroenterology and Digestive Endoscopy, Campus Bio Medico University , Rome, Italy
| | - Giovanni de Carlo
- Unit of Gastroenterology and Digestive Endoscopy, Campus Bio Medico University , Rome, Italy
| | - Paola Balestrieri
- Unit of Gastroenterology and Digestive Endoscopy, Campus Bio Medico University , Rome, Italy
| | | | - Michele Cicala
- Unit of Gastroenterology and Digestive Endoscopy, Campus Bio Medico University , Rome, Italy
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Ribolsi M, Giordano A, Guarino MPL, Tullio A, Cicala M. New classifications of gastroesophageal reflux disease: an improvement for patient management? Expert Rev Gastroenterol Hepatol 2019; 13:761-769. [PMID: 31327288 DOI: 10.1080/17474124.2019.1645596] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Introduction: Gastroesophageal reflux disease (GERD) is a very common and often debilitating disease. In the broad spectrum of GERD phenotypes, three main groups may be traditionally distinguished: 1) patients only affected by esophageal and/or extra-esophageal symptoms; 2) patients with erosive esophagitis and 3) patients with further complications. Areas covered: This review provides an overview on the current classifications of GERD patients, and their impact on their management. Expert opinion: In 2017, the GERD Consensus Working Group focused the attention on patients unresponsive to PPIs. In this scenario, a diagnosis of GERD might be confirmed by evident signs of erosive esophagitis and the finding of pH or multichannel intraluminal impedance-pH tests, such as more than 6%. The 'Lyon Consensus' panel of experts confirmed that positive indices of reflux-symptom association, without other altered parameters, represent reflux hypersensitivity. GERD requires a customized management; it is crucial to assess frequency and severity of symptoms and their response to an optimal course of therapy as well as to explore the endoscopic alterations and consider other diagnoses responsible for persistent symptoms.
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Affiliation(s)
- Mentore Ribolsi
- a Unit of Gastroenterology and Digestive Endoscopy, University Campus Bio Medico , Rome , Italy
| | - Antonio Giordano
- a Unit of Gastroenterology and Digestive Endoscopy, University Campus Bio Medico , Rome , Italy
| | | | - Alessandro Tullio
- a Unit of Gastroenterology and Digestive Endoscopy, University Campus Bio Medico , Rome , Italy
| | - Michele Cicala
- a Unit of Gastroenterology and Digestive Endoscopy, University Campus Bio Medico , Rome , Italy
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Lechien JR, Muls V, Dapri G, Mouawad F, Eisendrath P, Schindler A, Nacci A, Barillari MR, Finck C, Saussez S, Akst LM, Sataloff RT. The management of suspected or confirmed laryngopharyngeal reflux patients with recalcitrant symptoms: A contemporary review. Clin Otolaryngol 2019; 44:784-800. [PMID: 31230417 DOI: 10.1111/coa.13395] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/14/2019] [Accepted: 06/13/2019] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To summarise current knowledge about the prevalence, aetiology and management of recalcitrant laryngopharyngeal reflux (LPR) patients-those who do not respond to anti-reflux medical treatment. METHODS A literature search was conducted following the PRISMA guidelines to identify studies that reported success of anti-reflux medical treatment with emphasis on studies that attempted to be rigorous in defining a population of LPR patients and which subsequently explored the characteristics of non-responder patients (ie aetiology of resistance; differential diagnoses; management and treatment). Three investigators screened publications for eligibility from PubMED, Cochrane Library and Scopus and excluded studies based on predetermined criteria. Design, diagnostic method, exclusion criteria, treatment characteristics, follow-up and quality of outcome assessment were evaluated. RESULTS Of the 139 articles screened, 45 met the inclusion criteria. The definition of non-responder patients varied substantially from one study to another and often did not include laryngopharyngeal signs. The reported success rate of conventional therapeutic trials ranged from 17% to 87% and depended on diagnostic criteria, treatment scheme, definition of treatment failure and treatment outcomes that varied substantially between studies. The management of non-responders differed between studies with a few differential diagnoses reported. No study considered the profile of reflux (acidic, weakly acid, non-acid or mixed) or addressed personalised treatment with the addition of alginate or magaldrate, low acid diet, or other interventions that have emerging evidence of efficacy. CONCLUSION To date, there is no standardised management of LPR patients who do not respond to traditional treatment approached. A diagnostic and therapeutic algorithm is proposed to improve the management of these patients. Future studies will be necessary to confirm the efficacy of this algorithm through large cohort studies of non-responder LPR patients. LEVEL OF EVIDENCE 2a.
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Affiliation(s)
- Jerome R Lechien
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,Laboratory of Anatomy and Cell Biology, Faculty of Medicine, UMONS Research Institute for Health Sciences and Technology, University of Mons (UMons), Mons, Belgium.,Laboratory of Phonetics, Faculty of Psychology, Research Institute for Language sciences and Technology, University of Mons (UMons), Mons, Belgium.,Department of Otorhinolaryngology and Head and Neck Surgery, CHU de Lille, Lille, France
| | - Vinciane Muls
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,Department of Gastroenterology and Endoscopy, CHU Saint-Pierre, Université Libre de Bruxelles, Brussels, Belgium
| | - Giovanni Dapri
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,Department of Gastrointestinal Surgery, CHU Saint-Pierre, Université Libre de Bruxelles, Brussels, Belgium
| | - François Mouawad
- Department of Otorhinolaryngology and Head and Neck Surgery, CHU de Lille, Lille, France
| | - Pierre Eisendrath
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,Department of Gastroenterology and Endoscopy, CHU Saint-Pierre, Université Libre de Bruxelles, Brussels, Belgium
| | - Antonio Schindler
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,Department of Biomedical and clinical sciences, Phoniatric Unit, L. Sacco Hospital, University of Milan, Milan, Italy
| | - Andrea Nacci
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,ENT Audiology and Phoniatric Unit, University of Pisa, Pisa, Italy
| | - Maria R Barillari
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,Division of Phoniatrics and Audiology, Department of Mental and Physical Health and Preventive Medicine, University of L. Vanvitelli, Naples, Italy
| | - Camille Finck
- Laboratory of Phonetics, Faculty of Psychology, Research Institute for Language sciences and Technology, University of Mons (UMons), Mons, Belgium.,Department of Otorhinolaryngology and Head and Neck Surgery, CHU de Liège, Université de Liège, Liège, Belgium
| | - Sven Saussez
- Laryngopharyngeal Reflux Study Group of Young-Otolaryngologists of the International Federations of Oto-rhino-laryngological Societies (YO-IFOS), Paris, France.,Laboratory of Phonetics, Faculty of Psychology, Research Institute for Language sciences and Technology, University of Mons (UMons), Mons, Belgium
| | - Lee M Akst
- Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins Hospital, Johns Hopkins School of Medicine, Baltimore, Maryland, USA
| | - Robert T Sataloff
- Department of Otolaryngology, Head and Neck Surgery, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
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14
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Ribolsi M, Cicala M, Zentilin P, Neri M, Mauro A, Efthymakis K, Petitti T, Savarino V, Penagini R. Prevalence and clinical characteristics of refractoriness to optimal proton pump inhibitor therapy in non-erosive reflux disease. Aliment Pharmacol Ther 2018; 48:1074-1081. [PMID: 30294924 DOI: 10.1111/apt.14986] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 06/18/2018] [Accepted: 08/22/2018] [Indexed: 12/13/2022]
Abstract
BACKGROUND The real size of the gastro-oesophageal reflux disease (GERD) population not responding to proton pump inhibitor (PPI) therapy has still not been fully elucidated. Causes of PPI refractoriness include incorrect diagnosis and lack of adherence to therapy, in terms of incorrect dosage and timing. AIMS To evaluate the prevalence of refractoriness to optimal PPI therapy and the contribution of non-erosive reflux disease (NERD), reflux hypersensitivity, and functional heartburn, to PPI refractoriness. The association of functional GI symptoms in non-responders was evaluated. METHODS Frequency and severity of GERD symptoms (heartburn, regurgitation, chest pain), dysphagia, belching, epigastric pain, postprandial distress, irritable bowel syndrome (IBS), globus, and ear nose and throat (ENT) symptoms were evaluated in patients previously classified as non-responders. Patients with at least one of the oesophageal symptoms with a frequency ≥3 /week were treated with esomeprazole 40 mg once daily for 8 weeks and then re-evaluated. Non-responders (patients with oesophageal symptoms ≥3 times per week) underwent 24 hour multichannel intraluminal impedance-pH monitoring. RESULTS Of 573 consecutive patients, 92 with oesophageal symptoms and classified as PPI-refractory underwent the esomeprazole trial; 60 did not respond. IBS, epigastric pain, and post-prandial distress episodes were associated with a poor response on multivariate analysis. NERD, reflux hypersensitivity, and functional heartburn patients constituted 32%, 42%, and 26%, respectively of the PPI-refractory group. CONCLUSIONS True refractoriness in patients with GERD symptoms attending a secondary care setting is lower than previously reported. Following a careful history and optimal PPI dosing, the rate of refractoriness was 20%. True NERD constitutes only a third of the PPI-refractory group.
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Affiliation(s)
- Mentore Ribolsi
- Digestive Disease Unit, Campus Bio Medico University, Rome, Italy
| | - Michele Cicala
- Digestive Disease Unit, Campus Bio Medico University, Rome, Italy
| | | | - Matteo Neri
- Section of Internal Medicine, Department of Medicine and Aging Sciences and Center for Excellence on Ageing (Ce.S.I.Met), "G. D'Annunzio" University and Foundation, Chieti, Italy
| | - Aurelio Mauro
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico - University of Milan, Milan, Italy
| | - Konstantinos Efthymakis
- Section of Internal Medicine, Department of Medicine and Aging Sciences and Center for Excellence on Ageing (Ce.S.I.Met), "G. D'Annunzio" University and Foundation, Chieti, Italy
| | | | | | - Roberto Penagini
- Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico - University of Milan, Milan, Italy
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15
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Lack of improvement of impaired chemical clearance characterizes PPI-refractory reflux-related heartburn. Am J Gastroenterol 2018; 113:670-676. [PMID: 29681623 DOI: 10.1038/s41395-018-0044-5] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 02/15/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Heartburn is the most specific symptom of reflux disease and is highly responsive to proton pump inhibitor (PPI) therapy. Some patients do not respond to PPIs, but mechanisms of refractoriness have not yet been fully elucidated. Impedance-pH monitoring, allowing comprehensive on-therapy assessment of reflux, represents a valuable test to investigate PPI refractoriness. METHODS Prospective multicenter study comparing endoscopy-negative patients with PPI-refractory and PPI-responsive heartburn. Reflux disease was demonstrated by off-PPI impedance-pH monitoring and mechanisms of refractoriness were studied with on-PPI impedance-pH monitoring. Assessment of impedance-pH tracings comprised conventional parameters, post-reflux swallow-induced peristaltic wave (PSPW) index, and mean nocturnal baseline impedance (MNBI). RESULTS Sixty-four patients entered the study, 32 with PPI-refractory and 32 with PPI-responsive heartburn. On PPI, median percentage gastric and esophageal acid exposure time and number of acid refluxes did not differ between the two groups; conversely, number of total and weakly acidic refluxes and percentage bolus exposure were significantly higher while PSPW index and MNBI were significantly lower in PPI-refractory cases. At multivariate logistic regression analysis, PSPW index was the sole independent risk factor for PPI refractoriness (OR 1.082, 95% CI 1.022-1.146, P = 0.007). Comparing off- and on-PPI parameters, median PSPW index did not change in PPI-refractory patients (24% vs. 26%, P = 0.327) but increased significantly in PPI-responsive cases (29% vs. 46%, P < 0.001). CONCLUSIONS Lack of improvement of impaired chemical clearance is a major determinant of PPI refractoriness. Timely post-reflux salivary swallowing represents a key defensive mechanism and a potential target for future treatment modalities in PPI-refractory reflux-related heartburn.
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16
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Mermelstein J, Chait Mermelstein A, Chait MM. Proton pump inhibitor-refractory gastroesophageal reflux disease: challenges and solutions. Clin Exp Gastroenterol 2018; 11:119-134. [PMID: 29606884 PMCID: PMC5868737 DOI: 10.2147/ceg.s121056] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A significant percentage of patients with gastroesophageal reflux disease (GERD) will not respond to proton pump inhibitor (PPI) therapy. The causes of PPI-refractory GERD are numerous and diverse, and include adherence, persistent acid, functional disorders, nonacid reflux, and PPI bioavailability. The evaluation should start with a symptom assessment and may progress to imaging, endoscopy, and monitoring of esophageal pH, impedance, and bilirubin. There are a variety of pharmacologic and procedural interventions that should be selected based on the underlying mechanism of PPI failure. Pharmacologic treatments can include antacids, prokinetics, alginates, bile acid binders, reflux inhibitors, and antidepressants. Procedural options include laparoscopic fundoplication and LINX as well as endoscopic procedures, such as transoral incisionless fundoplication and Stretta. Several alternative and complementary treatments of possible benefit also exist.
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Affiliation(s)
- Joseph Mermelstein
- Gasteroenterology and Nutrition Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Alanna Chait Mermelstein
- Department of Psychiatry and Behavioral Sciences, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Maxwell M Chait
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA
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17
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Garros A, Mion F, Marjoux S, Damon H, Roman S. Factors associated with nonresponse to proton pump inhibitors therapy in patients referred for esophageal pH-impedance monitoring. Dis Esophagus 2016; 29:787-793. [PMID: 25951923 DOI: 10.1111/dote.12374] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Nonresponse to proton pump inhibitors (PPI) concerns up to 40% of patients treated for gastroesophageal reflux disease (GERD). Identifying predictive factors of nonresponse might help to optimize patients' treatment. The aim of this study was to determine clinical factors associated with nonresponse to PPI therapy in patients referred for pH-impedance monitoring. One hundred and sixty-eight consecutive patients (105 females, mean age 52 years, range 17-83) were included between October 2011 and May 2013. Before the realization of high-resolution manometry and 24-hour pH-impedance monitoring they completed a questionnaire including Rome III criteria for functional dyspepsia and irritable bowel syndrome (IBS). Comparisons between patients with and without PPI response were performed using chi-square or analysis of variance tests. One hundred and twenty-six patients (83%) were considered as PPI nonresponders and 26 (17%) as responders. No significant difference was observed for age and body mass index. No manometric and pH-impedance profiles were identified as associated with PPI response. The percentage of patients with functional dyspepsia and IBS was higher in PPI nonresponders patients than in responders (65.6% and 27.2%, respectively, vs. 38.5% and 7.7%, P = 0.01 and P = 0.03). This study confirms that functional digestive disorders are more frequent in patients with persistent GERD symptoms on PPI and they might be indicative of nonresponse to PPI therapy.
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Affiliation(s)
- A Garros
- Hospices Civils de Lyon, Digestive Physiology, Edouard Herriot Hospital, Lyon, France
| | - F Mion
- Hospices Civils de Lyon, Digestive Physiology, Edouard Herriot Hospital, Lyon, France.,Lyon I University, Lyon, France.,LabTAU, Lyon, France
| | - S Marjoux
- Hospices Civils de Lyon, Digestive Physiology, Edouard Herriot Hospital, Lyon, France
| | - H Damon
- Hospices Civils de Lyon, Digestive Physiology, Edouard Herriot Hospital, Lyon, France
| | - S Roman
- Hospices Civils de Lyon, Digestive Physiology, Edouard Herriot Hospital, Lyon, France. .,Lyon I University, Lyon, France. .,LabTAU, Lyon, France.
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18
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de Bortoli N, Ottonello A, Zerbib F, Sifrim D, Gyawali CP, Savarino E. Between GERD and NERD: the relevance of weakly acidic reflux. Ann N Y Acad Sci 2016; 1380:218-229. [DOI: 10.1111/nyas.13169] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/04/2016] [Accepted: 06/13/2016] [Indexed: 12/14/2022]
Affiliation(s)
- Nicola de Bortoli
- Division of Gastroenterology, Department of Translational Research and New Technology in Medicine and Surgery; University of Pisa; Pisa Italy
| | - Andrea Ottonello
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology; University of Padua; Padua Italy
| | - Frank Zerbib
- Department of Gastroenterology; CHU Bordeaux and Bordeaux University; Bordeaux France
| | - Daniel Sifrim
- Barts and the London School of Medicine and Dentistry; Queen Mary University of London; United Kingdom
| | - C. Prakash Gyawali
- Division of Gastroenterology; Washington University School of Medicine; St. Louis Missouri
| | - Edoardo Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology; University of Padua; Padua Italy
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19
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Scarpellini E, Ang D, Pauwels A, De Santis A, Vanuytsel T, Tack J. Management of refractory typical GERD symptoms. Nat Rev Gastroenterol Hepatol 2016; 13:281-94. [PMID: 27075264 DOI: 10.1038/nrgastro.2016.50] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The management of patients with refractory GERD (rGERD) is a major clinical challenge for gastroenterologists. In up to 30% of patients with typical GERD symptoms (heartburn and/or regurgitation), acid-suppressive therapy does not provide clinical benefit. In this Review, we discuss the current management algorithm for GERD and the features and management of patients who do not respond to treatment (such as those individuals with an incorrect diagnosis of GERD, inadequate PPI intake, persisting acid reflux and persisting weakly acidic reflux). Symptom response to existing surgical techniques, novel antireflux procedures, and the value of add-on medical therapies (including prokinetics and reflux inhibitors) for rGERD symptoms are discussed. Pharmaceutical agents targeting oesophageal sensitivity, a condition that can contribute to symptom generation in rGERD, are also discussed. Finally, on the basis of available published data and our expert opinion, we present an outline of a current, usable algorithm for management of patients with rGERD that considers the timing and diagnostic use of pH-impedance monitoring on or off PPI, additional diagnostic tests, the clinical use of baclofen and the use of add-on neuromodulators (tricyclic agents and selective serotonin reuptake inhibitors).
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Affiliation(s)
- Emidio Scarpellini
- Translational Research in Gastrointestinal Disorders (TARGID), University of Leuven, Herestraat 49, B-3000 Leuven, Belgium.,Division Gastroenterology, Sapienza University of Rome, Viale del Policlinico 155, 00100, Rome, Italy
| | - Daphne Ang
- Division of Gastroenterology, Changi General Hospital, 2 Simei Street 3, Singapore 529889
| | - Ans Pauwels
- Translational Research in Gastrointestinal Disorders (TARGID), University of Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Adriano De Santis
- Division of Gastroenterology, Changi General Hospital, 2 Simei Street 3, Singapore 529889
| | - Tim Vanuytsel
- Translational Research in Gastrointestinal Disorders (TARGID), University of Leuven, Herestraat 49, B-3000 Leuven, Belgium
| | - Jan Tack
- Translational Research in Gastrointestinal Disorders (TARGID), University of Leuven, Herestraat 49, B-3000 Leuven, Belgium
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20
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de Bortoli N, Martinucci I, Savarino E, Franchi R, Bertani L, Russo S, Ceccarelli L, Costa F, Bellini M, Blandizzi C, Savarino V, Marchi S. Lower pH values of weakly acidic refluxes as determinants of heartburn perception in gastroesophageal reflux disease patients with normal esophageal acid exposure. Dis Esophagus 2016; 29:3-9. [PMID: 25212408 DOI: 10.1111/dote.12284] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Multichannel impedance pH monitoring has shown that weakly acidic refluxes are able to generate heartburn. However, data on the role of different pH values, ranging between 4 and 7, in the generation of them are lacking. The aim of this study was to evaluate whether different pH values of weakly acidic refluxes play a differential role in provoking reflux symptoms in endoscopy-negative patients with physiological esophageal acid exposure time and positive symptom index and symptom association probability for weakly acidic refluxes. One hundred and forty-three consecutive patients with gastroesophageal reflux disease, nonresponders to proton pump inhibitors (PPIs), were allowed a washout from PPIs before undergoing: upper endoscopy, esophageal manometry, and multichannel impedance pH monitoring. In patients with both symptom index and symptom association probability positive for weakly acidic reflux, each weakly acidic reflux was evaluated considering exact pH value, extension, physical characteristics, and correlation with heartburn. Forty-five patients with normal acid exposure time and positive symptom association probability for weakly acidic reflux were identified. The number of refluxes not heartburn related was higher than those heartburn related. In all distal and proximal liquid refluxes, as well as in distal mixed refluxes, the mean pH value of reflux events associated with heartburn was significantly lower than that not associated. This condition was not confirmed for proximal mixed refluxes. Overall, a low pH of weakly acidic reflux represents a determinant factor in provoking heartburn. This observation contributes to better understand the pathophysiology of symptoms generated by weakly acidic refluxes, paving the way toward the search for different therapeutic approaches to this peculiar condition of esophageal hypersensitivity.
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Affiliation(s)
- N de Bortoli
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - I Martinucci
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - E Savarino
- Division of Gastroenterology, Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy
| | - R Franchi
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - L Bertani
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - S Russo
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - L Ceccarelli
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - F Costa
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - M Bellini
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
| | - C Blandizzi
- Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa, Pisa, Italy
| | - V Savarino
- Division of Gastroenterology, Department of Internal Medicine DIMI, University of Genova, Genoa, Italy
| | - S Marchi
- Gastroenterology Unit, Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy
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21
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The Proton Pump Inhibitor Non-Responder: A Clinical Conundrum. Clin Transl Gastroenterol 2015; 6:e106. [PMID: 26270485 PMCID: PMC4816276 DOI: 10.1038/ctg.2015.32] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 06/22/2015] [Indexed: 12/12/2022] Open
Abstract
Gastroesophageal reflux disease (GERD) is a highly prevalent chronic condition where in stomach contents reflux into the esophagus causing symptoms, esophageal injury, and subsequent complications. Proton pump inhibitors (PPI) remain the mainstay of therapy for acid suppression. Despite their efficacy, significant proportions of GERD patients are either partial or non-responders to PPI therapy. Patients should be assessed for mechanisms that can lead to PPI failure and may require further evaluation to investigate for alternative causes. This monograph will outline a diagnostic approach to the PPI non-responder, review mechanisms associated with PPI failure, and discuss therapeutic options for those who fail to respond to PPI therapy.
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22
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Ribolsi M, Savarino E, De Bortoli N, Balestrieri P, Furnari M, Martinucci I, Casale M, Greco F, Salvinelli F, Savarino V, Marchi S, Cicala M. Reflux pattern and role of impedance-pH variables in predicting PPI response in patients with suspected GERD-related chronic cough. Aliment Pharmacol Ther 2014; 40:966-73. [PMID: 25109844 DOI: 10.1111/apt.12919] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 05/31/2014] [Accepted: 07/24/2014] [Indexed: 12/14/2022]
Abstract
BACKGROUND Gastro-oesophageal reflux disease (GERD) may contribute to the onset of chronic cough (CC); however, the multichannel intraluminal impedance-pH (MII-pH) monitoring is often within the normal range and the response to proton pump inhibitors (PPIs) unsatisfactory. The measure of impedance baseline (IB) increases the sensitivity of MII-pH in patients with typical symptoms. AIM To evaluate the role of MII-pH variables, including IB, in predicting PPI response and to define the characteristics of the reflux pattern in CC patients. METHODS Prospectively selected CC patients suspected GERD-related underwent MII-pH monitoring and, therefore, received a double dose of PPIs for at least 6 weeks. Patients filled symptom scores before MII-pH and after PPI therapy. MII-pH data were compared with those obtained in 60 non-erosive reflux disease patients with typical symptoms. RESULTS A total of 156 CC patients entered the study: 68 (43.5%) responders and 88 (56.5%) nonresponders to PPIs. The number of reflux episodes was significantly higher in CC compared with that in typical symptoms patients. Nonresponder CC patients with a pathological acid exposure time (AET) and/or IB value were 43/88 (49%), while 15/88 (17%) presented only pathological AET (P < 0.001). CC patients with a pathological AET or IB, or with both a pathological AET and IB, showed a probability of PPI response twofold greater than patients with normal AET and IB. CONCLUSIONS The presence of a pathological AET or pathological IB in CC patients is associated with a greater probability of PPI response. IB is a promising variable in patients with CC, as it increases the diagnostic yield of MII-pH and allows confirmation of the GERD diagnosis in these patients.
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Affiliation(s)
- M Ribolsi
- Unit of Digestive Disease, Campus Bio Medico University, Rome, Italy
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23
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Ribolsi M, Holloway RH, Emerenziani S, Balestrieri P, Cicala M. Impedance-high resolution manometry analysis of patients with nonerosive reflux disease. Clin Gastroenterol Hepatol 2014; 12:52-7. [PMID: 23891920 DOI: 10.1016/j.cgh.2013.06.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 06/11/2013] [Accepted: 06/28/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Transient lower esophageal sphincter relaxations (TLESRs) contribute to episodes of reflux. Few studies have assessed the frequencies or compositions of TLESRs and reflux episodes in patients with reflux disease. We used combined high-resolution manometry and impedance monitoring to analyze reflux episodes and esophageal motility in these patients, compared with those of healthy individuals. METHODS We evaluated the frequency of TLESRs and the relationship between the reflux pattern and esophageal pressures during TLESRs in 14 patients with nonerosive reflux disease (NERD) and 11 controls. Study participants underwent combined high-resolution manometry and impedance monitoring before and 60 minutes after a solid and liquid meal. The diagnosis of NERD was confirmed by a 24-hour pH impedance test. RESULTS The frequency of TLESRs did not differ between patients with NERD and controls. In patients with NERD, TLESRs were associated more often with reflux episodes than in controls (93% ± 6% vs 66% ± 19%; P < .05). Patients with NERD had a higher percentage of pure liquid reflux episodes (33% ± 15% vs 10% ± 2%; P < .05), whereas controls had a higher percentage of mixed reflux episodes (45% ± 16% vs 67% ± 17% in patients with NERD; P < .05). Patients with NERD also had a higher percentage of reflux (liquid and mixed) associated with common cavities (74% ± 18% vs 50% ± 20% in controls; P < .05). CONCLUSIONS In contrast to previous studies, we found that TLESRs are associated more often with reflux in patients with NERD than control subjects; this association increases when only liquid and mixed refluxes are considered. These findings indicate that factors involved in the occurrence of reflux in patients with NERD during TLESRs are different from those in healthy subjects.
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Affiliation(s)
- Mentore Ribolsi
- Department of Digestive Disease, University Campus Bio Medico, Rome, Italy.
| | - Richard H Holloway
- Department of Gastroenterology and Hepatology, Royal Adelaide Hospital, Discipline of Medicine, University of Adelaide, Adelaide, South Australia
| | - Sara Emerenziani
- Department of Digestive Disease, University Campus Bio Medico, Rome, Italy
| | - Paola Balestrieri
- Department of Digestive Disease, University Campus Bio Medico, Rome, Italy
| | - Michele Cicala
- Department of Digestive Disease, University Campus Bio Medico, Rome, Italy
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de Bortoli N, Martinucci I, Savarino E, Bellini M, Bredenoord AJ, Franchi R, Bertani L, Furnari M, Savarino V, Blandizzi C, Marchi S. Proton pump inhibitor responders who are not confirmed as GERD patients with impedance and pH monitoring: who are they? Neurogastroenterol Motil 2014; 26:28-35. [PMID: 23992024 DOI: 10.1111/nmo.12221] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 07/31/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND A short-course of proton pump inhibitors (PPIs) is often used to confirm gastroesophageal reflux disease (GERD). However, some patients with PPI responsive heartburn do not seem to have evidence of GERD on impedance-pH monitoring (MII-pH). The aim of the study was to evaluate patients with reflux symptoms and a negative endoscopy, who well respond to PPIs with MII-pH. METHODS We enrolled 312 patients with GERD symptoms and negative endoscopy: 144 reported well-controlled symptoms after 8-week PPIs and 155 were non-responders. Symptom relief was evaluated with GERD Impact Scale and visual analog scale score. All patients underwent MII-pH off-therapy. Thirteen patients were excluded from analysis. Patients were grouped as follows: non-erosive reflux disease (NERD; increased acid exposure time, AET); hypersensitive esophagus (HE; normal AET, positive symptom association, SI/SAP); MII-pH-/PPI+ (normal AET, negative SI/SAP) in the responder group; MII-pH-/PPI- in non-responders. KEY RESULTS MII-pH in PPI responders (symptom relief during PPI therapy > 75%) showed: 79/144 NERD (54.9%); 37/144 HE (25.7%); 28/144 MII-pH-/PPI+ (19.4%). MII-pH-/PPI+ patients reported the same symptom relief when compared with NERD and HE. In non-responder (symptom relief during PPI therapy < 50%) group, 27/155 patients were NERD (17.4%); 53/155 were HE (34.2%); 75/155 were MII-pH-/PPI- (48.4%). NERD diagnosis was significantly higher in responder group (p < 0.01). CONCLUSIONS & INFERENCES In a substantial subgroup of patients responding to PPI with typical reflux symptoms, the diagnosis of GERD cannot be confirmed with pH-impedance monitoring. Proton pump inhibitor response and presence of typical symptoms are thus not reliable predictors of the diagnosis and antireflux surgery should always be preceded by reflux monitoring.
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Affiliation(s)
- N de Bortoli
- Division of Gastroenterology, University of Pisa, Pisa, Italy
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25
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Emerenziani S, Ribolsi M, Guarino MPL, Balestrieri P, Altomare A, Rescio MP, Cicala M. Acid reflux episodes sensitize the esophagus to perception of weakly acidic and mixed reflux in non-erosive reflux disease patients. Neurogastroenterol Motil 2014; 26:108-14. [PMID: 24118616 DOI: 10.1111/nmo.12239] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 08/29/2013] [Indexed: 02/08/2023]
Abstract
BACKGROUND Non-erosive reflux disease (NERD) patients are more sensitive than erosive esophagitis patients to weakly acidic reflux and to the presence of gas in the refluxate. Intra-esophageal acid perfusion sensitizes esophageal receptors to mechanical and chemical stimuli. METHODS To establish whether acid sensitization plays a role in the perception of weakly acidic and mixed reflux episodes, 29 NERD patients, responders and 14 non-responders to proton pump inhibitors (PPIs), underwent pH-impedance monitoring. Non-responders repeated the study while on PPIs. To assess the effect of acid exposure on symptom perception, the time period with pH below 4 was measured in 15- and 30-minute time-windows preceding the onset of each reflux episode. KEY RESULTS Considering weakly acidic and mixed refluxes, both in responder and non-responder patients (off PPIs), the symptomatic refluxes were preceded by a significantly higher cumulative acid exposure than the asymptomatic refluxes. In all patients, following acid reflux, the percentage of symptomatic weakly acidic reflux episodes was significantly higher than that of asymptomatic refluxes. Non-responder patients, off-treatment, were characterized by a lower proportion of weakly acidic reflux and mixed reflux episodes. In the non-responder patients on PPI, only mixed and weakly symptomatic reflux episodes were preceded by a higher cumulative acid exposure. CONCLUSIONS & INFERENCES In NERD patients, spontaneous acid reflux enhances subsequent reflux perception, regardless of acidity or liquid/mixed composition of episodes; in non-responder patients on PPIs, only the perception of mixed and weakly acidic reflux episodes seems to be mediated by a preceding acid exposure.
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Affiliation(s)
- S Emerenziani
- Unit of Digestive Disease, Campus Bio Medico University, Roma, Italy
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Cicala M, Emerenziani S, Guarino MPL, Ribolsi M. Proton pump inhibitor resistance, the real challenge in gastro-esophageal reflux disease. World J Gastroenterol 2013; 19:6529-6535. [PMID: 24151377 PMCID: PMC3801364 DOI: 10.3748/wjg.v19.i39.6529] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 07/30/2013] [Accepted: 08/16/2013] [Indexed: 02/06/2023] Open
Abstract
Gastro-esophageal reflux disease (GERD) is one of the most prevalent chronic diseases. Although proton pump inhibitors (PPIs) represent the mainstay of treatment both for healing erosive esophagitis and for symptom relief, several studies have shown that up to 40% of GERD patients reported either partial or complete lack of response of their symptoms to a standard PPI dose once daily. Several mechanisms have been proposed as involved in PPIs resistance, including ineffective control of gastric acid secretion, esophageal hypersensitivity, ultrastructural and functional changes in the esophageal epithelium. The diagnostic evaluation of a refractory GERD patients should include an accurate clinical evaluation, upper endoscopy, esophageal manometry and ambulatory pH-impedance monitoring, which allows to discriminate non-erosive reflux disease patients from those presenting esophageal hypersensitivity or functional heartburn. Treatment has been primarily based on doubling the PPI dose or switching to another PPI. Patients with proven disease, not responding to PPI twice daily, are eligible for anti-reflux surgery.
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27
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Altomare A, Guarino MPL, Cocca S, Emerenziani S, Cicala M. Gastroesophageal reflux disease: Update on inflammation and symptom perception. World J Gastroenterol 2013; 19:6523-6528. [PMID: 24151376 PMCID: PMC3801363 DOI: 10.3748/wjg.v19.i39.6523] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Revised: 07/24/2013] [Accepted: 08/20/2013] [Indexed: 02/06/2023] Open
Abstract
Although gastroesophageal reflux disease (GERD) is a common disorder in Western countries, with a significant impact on quality of life and healthcare costs, the mechanisms involved in the pathogenesis of symptoms remain to be fully elucidated. GERD symptoms and complications may result from a multifactorial mechanism, in which acid and acid-pepsin are the important noxious factors involved. Prolonged contact of the esophageal mucosa with the refluxed content, probably caused by a defective anti-reflux barrier and luminal clearance mechanisms, would appear to be responsible for macroscopically detectable injury to the esophageal squamous epithelium. Receptors on acid-sensitive nerve endings may play a role in nociception and esophageal sensitivity, as suggested in animal models of chronic acid exposure. Meanwhile, specific cytokine and chemokine profiles would appear to underlie the various esophageal phenotypes of GERD, explaining, in part, the genesis of esophagitis in a subset of patients. Despite these findings, which show a significant production of inflammatory mediators and neurotransmitters in the pathogenesis of GERD, the relationship between the hypersensitivity and esophageal inflammation is not clear. Moreover, the large majority of GERD patients (up to 70%) do not develop esophageal erosions, a variant of the condition called non-erosive reflux disease. This summary aims to explore the inflammatory pathway involved in GERD pathogenesis, to better understand the possible distinction between erosive and non-erosive reflux disease patients and to provide new therapeutic approaches.
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28
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Bravi I, Woodland P, Gill RS, Al-Zinaty M, Bredenoord AJ, Sifrim D. Increased prandial air swallowing and postprandial gas-liquid reflux among patients refractory to proton pump inhibitor therapy. Clin Gastroenterol Hepatol 2013; 11:784-9. [PMID: 23376324 DOI: 10.1016/j.cgh.2012.12.041] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Revised: 12/17/2012] [Accepted: 12/28/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Many patients with gastroesophageal reflux disease (GERD) have persistent reflux despite treatment with proton pump inhibitors (PPIs). Mixed gas-liquid reflux events are more likely to be perceived as symptomatic. We used esophageal impedance monitoring to investigate whether esophageal gas is processed differently among patients with GERD who do and do not respond to PPI therapy. METHODS We performed a prospective study of 44 patients with typical reflux symptoms with high levels of esophageal acid exposure during a 24-hour period; 18 patients were fully responsive, and 26 did not respond to PPI therapy. Twenty-four-hour pH impedance recordings were analyzed for fasting and prandial air swallows and reflux characteristics, including the presence of gas in the refluxate. RESULTS PPI-refractory patients had a higher number (83.1 ± 12.7 vs 47.8 ± 7.3, P < .05) and rate (10.5 ± 1.4 vs 5.9 ± 0.8/10 minutes, P < .05) of prandial air swallows than patients who responded to PPI therapy; they also had a higher number (25.5 ± 4.0 vs 16.8 ± 3.3, P < .05) and proportion (70% ± 0.03% vs 54% ± 0.06%, P < .05) of postprandial, mixed gas-liquid reflux. Symptoms of PPI-refractory patients were more often preceded by mixed gas-liquid reflux events than those of PPI responders. Fasting air swallowing and other reflux characteristics did not differ between patients who did and did not respond to PPIs. CONCLUSIONS Some patients with GERD who do not respond to PPI therapy swallow more air at mealtime than those who respond to PPIs and also have more reflux episodes that contain gas. These factors, combined with mucosal sensitization by previous exposure to acid, could affect perception of symptoms. These patients, who can be identified on standard 24-hour pH impedance monitoring, might be given behavioral therapy to reduce mealtime air swallowing.
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Affiliation(s)
- Ivana Bravi
- Gastrointestinal Unit 2, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Università degli Studi of Milan, Milan, Italy
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Peura DA, Pilmer B, Hunt B, Mody R, Perez MC. The effects of increasing body mass index on heartburn severity, frequency and response to treatment with dexlansoprazole or lansoprazole. Aliment Pharmacol Ther 2013; 37:810-8. [PMID: 23451835 PMCID: PMC3613742 DOI: 10.1111/apt.12270] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 11/12/2012] [Accepted: 02/08/2013] [Indexed: 12/17/2022]
Abstract
BACKGROUND Higher body mass index (BMI) is a recognised risk factor for gastro-oesophageal reflux disease (GERD). Data regarding the impact of BMI on proton pump inhibitor (PPI) therapy are conflicting. AIM To assess the impact of BMI on baseline heartburn symptom severity and frequency and response to PPI therapy in patients with non-erosive GERD (NERD) or erosive oesophagitis (EO). METHODS In post hoc analyses of phase 3 trial data, 621 NERD and 2692 EO patients were stratified by BMI (<25, 25 to <30 and ≥30 kg/m(2) ). NERD patients received either dexlansoprazole MR 30 mg or placebo daily for 4 weeks. EO patients received either dexlansoprazole MR 60 mg or lansoprazole 30 mg for 8 weeks. Symptom frequency and severity were assessed at baseline and subsequently by daily diary. RESULTS In both the NERD and EO cohorts, baseline heartburn severity increased with increasing BMI. The impact of PPI therapy on the reduction in heartburn symptom frequency and severity in both NERD and EO patients was similar across BMI categories. EO healing rates in patients treated with dexlansoprazole but not lansoprazole were higher in obese patients compared with those with a BMI <30 kg/m(2) . Differences between the PPIs were small. CONCLUSIONS The PPIs evaluated in this study reduced the frequency and severity of 24-h heartburn regardless of baseline BMI. In addition, because patients with higher BMI have more severe symptoms at baseline, they may experience greater therapeutic gain with dexlansoprazole (NERD and erosive oesophagitis) and possibly lansoprazole (erosive oesophagitis) treatment.
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Affiliation(s)
- D A Peura
- University of Virginia Health Sciences CenterCharlottesville, VA, USA
| | - B Pilmer
- Takeda Global Research & Development Center, IncDeerfield, IL, USA
| | - B Hunt
- Takeda Global Research & Development Center, IncDeerfield, IL, USA
| | - R Mody
- Takeda Pharmaceuticals International, IncDeerfield, IL, USA
| | - M C Perez
- Takeda Global Research & Development Center, IncDeerfield, IL, USA
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Ribolsi M, Emerenziani S, Borrelli O, Balestrieri P, Addarii MC, Petitti T, Cicala M. Impedance baseline and reflux perception in responder and non-responder non-erosive reflux disease patients. Scand J Gastroenterol 2012; 47:1266-73. [PMID: 22954058 DOI: 10.3109/00365521.2012.722674] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND It was recently shown that GERD patients have lower impedance baseline (IB) values than healthy controls and, that the esophageal acid exposure time (AET) correlates with IB levels. GOALS To explore the sensitivity of IB measurements in NERD patients, responders and non-responders to PPIs, when compared with pH-impedance (MII-pH) variables, and to evaluate whether this variable could represent a marker of GERD symptoms. Reproducibility and inter-observer agreement of IB measurement were also assessed. Study. MII-pH tracings from 44 NERD responders and 22 non-responders were analysed. Ten healthy volunteers underwent the same protocol. IB values were measured at the distal and proximal esophagus. IB was also analysed in a subgroup of patients and in controls with two methods and by two blinded operators. RESULTS Mean IB values at the distal esophagus were significantly lower in NERD patients than in controls. IB values did not differ between responders and non-responders. Of the 8 responders with negative AET and symptom association probability (SAP), 3 (37.5%) showed IB values lower than controls. IB values in responders with positive and negative SAP were similar (1832 (1596-2068) Ω vs 1667 (1361-1973) Ω, p: n.s.). No differences were found between the IB values measured with the two methods and the inter-observer agreement was good. CONCLUSIONS IB is a promising and easy to calculate MII-pH variable and appears to increase the sensitivity of MII-pH monitoring. IB values cannot predict PPI response and are not associated with reflux perception in NERD patients.
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Affiliation(s)
- Mentore Ribolsi
- Department of Digestive Disease, University Campus Bio Medico, Rome, Italy.
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