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Itskoviz D, Malnick SDH. Gastroesophageal reflux following peroral endoscopic myotomy for achalasia: Bumps in the road to success. World J Gastroenterol 2024; 30:3461-3464. [DOI: 10.3748/wjg.v30.i29.3461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 05/16/2024] [Accepted: 07/10/2024] [Indexed: 07/29/2024] Open
Abstract
Achalasia can significantly impair the quality of life. The clinical presentation typically includes dysphagia to both solids and liquids, chest pain, and regurgitation. Diagnosis can be delayed in patients with atypical presentations, and they might receive a wrong diagnosis, such as gastroesophageal reflux disease (GERD), owing to overlapping symptoms of both disorders. Although the cause of achalasia is poorly understood, its impact on the motility of the esophagus and gastroesophageal junction is well established. Several treatment modalities have been utilized, with the most common being surgical Heller myotomy with concomitant fundoplication and pneumatic balloon dilatation. Recently, peroral endoscopic myotomy (POEM) has gained popularity as an effective treatment for achalasia, despite a relatively high incidence of GERD occurring after treatment compared to other modalities. The magnitude of post-POEM GERD depends on its definition and is influenced by patient and procedure-related factors. The long-term sequelae of post-POEM GERD are yet to be determined, but it appears to have a benign course and is usually manageable with clinically available modalities. Identifying risk factors for post-POEM GERD and modifying the POEM procedure in selected patients may improve the overall success of this technique.
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Affiliation(s)
- David Itskoviz
- Kaplan Medical Center, Institute of Gastroenterology and Hepatology, Hebrew University Medical School of Jerusalem, Rehovot 76100, Israel
| | - Stephen David Howard Malnick
- Kaplan Medical Center, Department of Internal Medicine C, Hebrew University Medical School of Jerusalem, Rehovot 76100, Israel
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Nishikawa Y, Inoue H, Tanaka I, Ito S, Azuma D, Ushikubo K, Yamamoto K, Okada H, Toshimori A, Tanabe M, Onimaru M, Ito T, Yokoyama N, Shimamura Y. Impact of peroral endoscopic myotomy on the endoscopic pressure study integrated system. Dig Endosc 2024. [PMID: 39021248 DOI: 10.1111/den.14882] [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: 04/22/2024] [Accepted: 06/18/2024] [Indexed: 07/20/2024]
Abstract
OBJECTIVES The endoscopic pressure study integrated system (EPSIS) is an endoscopic diagnostic system utilized for evaluation of lower esophageal sphincter function. Although previous studies have determined that EPSIS was effective as a tool for the diagnosis of achalasia, it remains uncertain if EPSIS can detect significant changes before and after peroral endoscopic myotomy (POEM), which is the premier treatment for achalasia. This study aimed to evaluate the effectiveness of EPSIS as an objective diagnostic tool for assessing the clinical effect of POEM. METHODS We conducted a retrospective analysis of patients who underwent POEM from January 2022 to December 2023. The patients underwent EPSIS preoperatively and 2 months postoperatively. Intragastric pressure (IGP) parameters, including the maximum IGP, IGP difference, and waveform gradient were compared pre- and post-POEM. These parameters also were compared between two groups: the postoperative gastroesophageal reflux disease (GERD) group and the non-GERD group. RESULTS A total of 50 patients were analyzed. The mean maximum IGP was significantly lower postoperatively than preoperatively (15.0 mmHg vs. 19.8 mmHg, P < 0.001). The mean IGP difference and waveform gradient were also significantly lower postoperatively than preoperatively (8.0 mmHg vs. 12.2 mmHg, P < 0.001; and 0.26 mmHg/s vs. 0.43 mmHg/s, P < 0.001, respectively). The mean postoperative waveform gradient was significantly lower in the GERD group (17 patients, 34%) than in the non-GERD group (33 patients, 66%) (0.207 mmHg vs. 0.291 mmHg, P = 0.034). CONCLUSION The results supported the use of EPSIS as an effective diagnostic tool for assessing the effect of POEM.
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Affiliation(s)
- Yohei Nishikawa
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Haruhiro Inoue
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Ippei Tanaka
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Shotaro Ito
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Daisuke Azuma
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Kei Ushikubo
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Kazuki Yamamoto
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Hiroki Okada
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Akiko Toshimori
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Mayo Tanabe
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Manabu Onimaru
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Takayoshi Ito
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Noboru Yokoyama
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Yuto Shimamura
- Digestive Diseases Center, Showa University Koto Toyosu Hospital, Tokyo, Japan
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Tawheed A, Bahcecioglu IH, Yalniz M, El-Kassas M. Gastroesophageal reflux after per-oral endoscopic myotomy: Management literature. World J Gastroenterol 2024; 30:2947-2953. [PMID: 38946871 PMCID: PMC11212704 DOI: 10.3748/wjg.v30.i23.2947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/06/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
In this editorial, we respond to a review article by Nabi et al, in which the authors discussed gastroesophageal reflux (GER) following peroral endoscopic myotomy (POEM). POEM is presently the primary therapeutic option for achalasia, which is both safe and effective. A few adverse effects were documented after POEM, including GER. The diagnostic criteria were not clear enough because approximately 60% of patients have a long acid exposure time, while only 10% experience reflux symptoms. Multiple predictors of high disease incidence have been identified, including old age, female sex, obesity, and a baseline lower esophageal sphincter pressure of less than 45 mmHg. Some technical steps during the procedure, such as a lengthy or full-thickness myotomy, may further enhance the risk. Proton pump inhibitors are currently the first line of treatment. Emerging voices are increasingly advocating for the routine combining of POEM with an endoscopic fundoplication method, such as peroral endoscopic fundoplication or transoral incisionless fundoplication. However, more research is necessary to determine the safety and effectiveness of these procedures in the long term for patients who have undergone them.
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Affiliation(s)
- Ahmed Tawheed
- Department of Endemic Medicine, Faculty of Medicine, Helwan University, Cairo 11795, Egypt
| | | | - Mehmet Yalniz
- Department of Gastroenterology, Faculty of Medicine, Firat University, Elazig 23119, Türkiye
| | - Mohamed El-Kassas
- Department of Endemic Medicine, Faculty of Medicine, Helwan University, Cairo 11795, Egypt
- Liver Disease Research Center, College of Medicine, King Saud University, Riyadh 7805, Saudi Arabia
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Qian Z, Qian H, Gao X, Yang Z, Wang Y, Li X, Zhang W, Zhang G, Li X. Long-term efficacy of peroral endoscopic myotomy for achalasia under different criteria. Surg Endosc 2024; 38:2444-2453. [PMID: 38453750 DOI: 10.1007/s00464-024-10742-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 01/28/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND Peroral endoscopic myotomy (POEM) has emerged as a widely accepted treatment for achalasia, with limited studies for over 2 years. Additionally, traditional measurements of achalasia after POEM have deficiencies. The study aimed to analyze the long-term outcomes of POEM under different criteria. METHODS Patients with achalasia who received POEM between November 2012 and March 2021 were recruited. Patients and characteristics were shown, and risk factors related to two novel definitions of recurrence, symptomatic reflux, and reflux esophagitis were analyzed. RESULTS Three hundred and twenty-one patients were included. At a median follow-up of 52 months, twenty-three failures happened (7.17%) under the modified criterion, and forty-seven failures occurred (14.64%) under the normal standard. Hospitalization (P = 0.027) and esophageal myotomy length (P = 0.039) were significantly associated with long-term efficacy under the modified and normal criteria, respectively. Fifty-two patients (16.20%) reported reflux symptoms and endoscopy performed in 88 patients revealed reflux esophagitis in 22 cases (25.00%). There were no predictors in the analysis of symptomatic reflux and gender (P = 0.010), LESP (P = 0.013), IRP (P = 0.015), and the esophageal myotomy length (P = 0.032) were statistically related to reflux esophagitis. CONCLUSION POEM is an extremely safe and effective treatment for achalasia with long-term follow-up. Shorter hospitalization and shorter esophageal myotomy length may decrease the incidence of recurrence under the modified and normal criteria, respectively. Long-term outcomes of POEM are unpredictable. No risk factors were related to symptomatic reflux, and male patients with low preoperative LESP and IRP needed relatively shorter esophageal myotomy to prevent reflux esophagitis.
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Affiliation(s)
- Zhouyao Qian
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Haisheng Qian
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xin Gao
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhen Yang
- Department of Gastroenterology, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, Jiangsu, China
| | - Yun Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xueliang Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Weifeng Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Guoxin Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Xuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.
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Nabi Z, Inavolu P, Duvvuru NR. Prediction, prevention and management of gastroesophageal reflux after per-oral endoscopic myotomy: An update. World J Gastroenterol 2024; 30:1096-1107. [PMID: 38577183 PMCID: PMC10989487 DOI: 10.3748/wjg.v30.i9.1096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/26/2024] [Accepted: 02/18/2024] [Indexed: 03/06/2024] Open
Abstract
Achalasia cardia, the most prevalent primary esophageal motility disorder, is predominantly characterized by symptoms of dysphagia and regurgitation. The principal therapeutic approaches for achalasia encompass pneumatic dilatation (PD), Heller's myotomy, and the more recent per-oral endoscopic myotomy (POEM). POEM has been substantiated as a safe and efficacious modality for the management of achalasia. Although POEM demonstrates superior efficacy compared to PD and an efficacy parallel to Heller's myotomy, the incidence of gastroesophageal reflux disease (GERD) following POEM is notably higher than with the aforementioned techniques. While symptomatic reflux post-POEM is relatively infrequent, the significant occurrence of erosive esophagitis and heightened esophageal acid exposure necessitates vigilant monitoring to preclude long-term GERD-related complications. Contemporary advancements in the field have enhanced our comprehension of the risk factors, diagnostic methodologies, preventative strategies, and therapeutic management of GERD subsequent to POEM. This review focuses on the limitations inherent in the 24-h pH study for evaluating post-POEM reflux, potential modifications in the POEM technique to mitigate GERD risk, and the strategies for managing reflux following POEM.
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Affiliation(s)
- Zaheer Nabi
- Department of Gastroenterology, Asian Institute of Gastroenterology, Hyderabad 500082, Telangana, India
| | - Pradev Inavolu
- Department of Gastroenterology, Asian Institute of Gastroenterology, Hyderabad 500082, Telangana, India
| | - Nageshwar Reddy Duvvuru
- Department of Medical Gastroenterology, Asian Institute of Gastroenterology, Hyderabad 500032, Telangana, India
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Nagi TK, Suarez ZK, Haider MA, Holder SS, Vallejo C, Chaudhari SS. Per-Oral Endoscopic Myotomy-Induced Gastroesophageal Reflux Disease and Review of the Efficacy of Proton Pump Inhibitors as a Management Strategy: Review of the Literature. Cureus 2023; 15:e50324. [PMID: 38205455 PMCID: PMC10777338 DOI: 10.7759/cureus.50324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2023] [Indexed: 01/12/2024] Open
Abstract
Per-oral endoscopic myotomy (POEM) is a minimally invasive procedure that is very effective in the treatment of achalasia, a rare esophageal motility disorder. POEM has become the first-line treatment for achalasia, with high success rates reported in the literature. However, a known complication of POEM is gastroesophageal reflux disease (GERD). The exact cause and risk factors of post-POEM GERD are not fully understood; however, a number of factors have played a role in its development. The management of post-POEM GERD is mainly by conservative measures, such as lifestyle changes and medications, like proton pump inhibitors (PPI), which are often the first-line method of treatment. However, surgical procedures, such as fundoplication, may be necessary in some patients. This literature review will discuss the effectiveness of the use of PPIs as a management strategy for post-POEM GERD, the factors that lead to PPI-resistant GERD, and other management strategies utilized in these cases.
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Affiliation(s)
- Talwinder K Nagi
- Internal Medicine, Florida Atlantic University Charles E. Schmidt College of Medicine, Boca Raton, USA
| | - Zoilo K Suarez
- Internal Medicine, Florida Atlantic University Charles E. Schmidt College of Medicine, Boca Raton, USA
| | - Muhammad Adnan Haider
- Internal Medicine, Florida Atlantic University Charles E. Schmidt College of Medicine, Boca Raton, USA
| | - Shaniah S Holder
- Medicine, American University of Barbados School of Medicine, Bridgetown, BRB
| | - Charles Vallejo
- Internal Medicine, Florida Atlantic University Charles E. Schmidt College of Medicine, Boca Raton, USA
| | - Sandipkumar S Chaudhari
- Cardiothoracic Surgery, University of Alabama at Birmingham, Birmingham, USA
- Family Medicine, University of North Dakota School of Medicine and Health Sciences, Grand Forks, USA
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Sarici IS, Eriksson S, Abu-Nuwar MR, Kuzy J, Gardner M, Zheng P, Jobe B, Ayazi S. Peroral Endoscopic Myotomy (POEM) and Laparoscopic Heller Myotomy with Dor Fundoplication for Esophagogastric Junction Outflow Obstruction (EGJOO): a Comparison of Outcomes and Impact on Physiology. J Gastrointest Surg 2023; 27:2684-2693. [PMID: 37848686 PMCID: PMC10660958 DOI: 10.1007/s11605-023-05844-0] [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: 05/05/2023] [Accepted: 09/16/2023] [Indexed: 10/19/2023]
Abstract
INTRODUCTION Esophagogastric junction outflow obstruction (EGJOO) is an esophageal motility disorder characterized by failure of lower esophageal sphincter (LES) relaxation with preserved peristalsis. Studies have shown that Heller myotomy with Dor fundoplication (HMD) and per oral endoscopic myotomy (POEM) are effective treatments for EGJOO. However, there is paucity of data comparing the efficacy and impact of these two procedures. Therefore, the aim of this study was to compare outcomes and impact on esophageal physiology in patients undergoing HMD or POEM for primary EGJOO. METHODS This was a retrospective review of patients who underwent either HMD or POEM for primary EGJOO at our institution between 2013 and 2021. Favorable outcome was defined as an Eckardt score ≤ 3 at 1 year after surgery. GERD-HRQL questionnaire, endoscopy, pH monitoring, and high-resolution manometry (HRM) results at baseline and 1 year after surgery were compared pre- and post-surgery and between groups. Objective GERD was defined as DeMeester score > 14.7 or LA grade C/D esophagitis. RESULTS The final study population consisted of 52 patients who underwent HMD (n = 35) or POEM (n = 17) for EGJOO. At a mean (SD) follow-up of 24.6 (15.3) months, favorable outcome was achieved by 30 (85.7%) patients after HMD and 14 (82.4%) after POEM (p = 0.753). After HMD, there was a decrease GERD-HRQL total score (31 (22-45) to 4 (0-19); p < 0.001), and objective reflux (54.2 to 25.9%; p = 0.033). On manometry, there was a decrease in LES resting pressure (48 (34-59) to 13 (8-17); p < 0.001) and IRP (22 (17-28) to 8 (3-11); p < 0.001), but esophageal body characteristics did not change (p > 0.05). Incomplete bolus clearance improved (70% (10-90) to 10% (0-40); p = 0.010). After POEM, there was no change in the GERD-HRQL total score (p = 0.854), but objective reflux significantly increased (0 to 62%; p < 0.001). On manometry, there was a decrease in LES resting pressure (43 (30-68) to 31 (5-34); p = 0.042) and IRP (23 (18-33) to 12 (10-32); p = 0.048), DCI (1920 (1600-5500) to 0 (0-814); p = 0.035), with increased failed swallows (0% (0-30) to 100% (10-100); p = 0.032). Bolus clearance did not improve (p = 0.539). Compared to HMD, POEM had a longer esophageal myotomy length (11 (7-15)-vs-5 (5-6); p = 0.001), more objective reflux (p = 0.041), lower DCI (0 (0-814)-vs-1695 (929-3101); p = 0.004), and intact swallows (90 (70-100)-vs-0 (0-40); p = 0.006), but more failed swallows (100 (10-100); p = 0.018) and incomplete bolus clearance (90 (90-100)-vs-10 (0-40); p = 0.004). CONCLUSION Peroral endoscopic myotomy and Heller myotomy with Dor fundoplication are equally effective at relieving EGJOO symptoms. However, POEM causes worse reflux and near complete loss of esophageal body function.
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Affiliation(s)
- Inanc S Sarici
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA
- Chevalier Jackson Research Fellowship, Esophageal Institute, Western Pennsylvania Hospital, Pittsburgh, PA, USA
| | - Sven Eriksson
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA
- Chevalier Jackson Research Fellowship, Esophageal Institute, Western Pennsylvania Hospital, Pittsburgh, PA, USA
| | - Mohamad Rassoul Abu-Nuwar
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA
| | - Jacob Kuzy
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA
| | - Margaret Gardner
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA
| | - Ping Zheng
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA
- Chevalier Jackson Research Fellowship, Esophageal Institute, Western Pennsylvania Hospital, Pittsburgh, PA, USA
| | - Blair Jobe
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA
- Chevalier Jackson Research Fellowship, Esophageal Institute, Western Pennsylvania Hospital, Pittsburgh, PA, USA
- Department of Surgery, Drexel University, Philadelphia, PA, USA
| | - Shahin Ayazi
- Foregut Division, Surgical Institute, Allegheny Health Network, 4815 Liberty Avenue, Suite 439, Pittsburgh, PA, 15224, USA.
- Chevalier Jackson Research Fellowship, Esophageal Institute, Western Pennsylvania Hospital, Pittsburgh, PA, USA.
- Department of Surgery, Drexel University, Philadelphia, PA, USA.
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Li MY, Wang QH, Chen RP, Su XF, Wang DY. Pathogenesis, clinical manifestations, diagnosis, and treatment progress of achalasia of cardia. World J Clin Cases 2023; 11:1741-1752. [PMID: 36970002 PMCID: PMC10037292 DOI: 10.12998/wjcc.v11.i8.1741] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/06/2023] [Accepted: 02/21/2023] [Indexed: 03/07/2023] Open
Abstract
Achalasia cardia, type of esophageal dynamic disorder, is a relatively rare primary motor esophageal disease characterized by the functional loss of plexus ganglion cells in the distal esophagus and lower esophageal sphincter. Loss of function of the distal and lower esophageal sphincter ganglion cells is the main cause of achalasia cardia, and is more likely to occur in the elderly. Histological changes in the esophageal mucosa are considered pathogenic; however, studies have found that inflammation and genetic changes at the molecular level may also cause achalasia cardia, resulting in dysphagia, reflux, aspiration, retrosternal pain, and weight loss. Currently, the treatment options for achalasia focus on reducing the resting pressure of the lower esophageal sphincter, helping to empty the esophagus and relieve symptoms. Treatment measures include botulinum toxin injection, inflatable dilation, stent insertion, and surgical myotomy (open or laparoscopic). Surgical procedures are often subject to controversy owing to concerns about safety and effectiveness, particularly in older patients. Herein, we review clinical epidemiological and experimental data to determine the prevalence, pathogenesis, clinical presentation, diagnostic criteria, and treatment options for achalasia to support its clinical management.
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Affiliation(s)
- Ming-Yue Li
- School of Nursing, Binzhou Medical University, Yantai 264003, Shandong Province, China
| | - Qing-Hua Wang
- School of Nursing, Binzhou Medical University, Yantai 264003, Shandong Province, China
| | - Run-Peng Chen
- School of Nursing, Binzhou Medical University, Yantai 264003, Shandong Province, China
| | - Xiao-Fang Su
- School of Nursing, Binzhou Medical University, Yantai 264003, Shandong Province, China
| | - Dong-Yang Wang
- School of Nursing, Binzhou Medical University, Yantai 264003, Shandong Province, China
- Faculty of Nursing, Mahidol University, Nakhon Pathom 73170, Thailand
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