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Wong HJ, Vierra M, Hedberg M, Attaar M, Su B, Kuchta K, Chiao G, Linn JG, Haggerty SP, Ujiki MB. A Tailored Approach to Laparoscopic Fundoplication: Outcomes in Patients with Esophageal Dysmotility. J Gastrointest Surg 2022; 26:2426-2433. [PMID: 36221019 DOI: 10.1007/s11605-022-05452-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 09/03/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND Esophageal dysmotility is a common finding in patients being evaluated for antireflux surgery, although its implication remains unclear. We aimed to evaluate outcomes of patients with esophageal dysmotility after fundoplication. METHODS A retrospective review of a prospective quality-database was performed. All patients who underwent laparoscopic Nissen (NF) or Toupet (TF) fundoplication were included. Esophageal dysmotility was defined using the Chicago Classification v4.0 and conventional metrics, creating three sub-groups: ineffective esophageal motility (IEM), distal/diffuse esophageal spasm (DES), and hypercontractile esophagus (HE). Quality of life (QOL) outcomes were measured by the Reflux Severity Index (RSI), Gastroesophageal Reflux Disease-Health Related Quality of Life (GERD-HRQL), and Dysphagia Scores. RESULTS Of 487 patients included, 99 (20.3%) had esophageal dysmotility (49 IEM, 40 DES, 10 HE). While a majority in the dysmotility group (81.8%) underwent TF, most patients in the normal group (76.5%) underwent NF (p < 0.001). On multivariable analysis controlling for sex, age, BMI, hiatal hernia, and surgery type, the normal group had higher Dysphagia Scores at 3 weeks (2.2 ± 0.9 vs. 1.7 ± 0.8, p < 0.001), but not at 6-month, 1-year, 2-year, or 5-year follow-up. There were no differences between normal and dysmotility groups in terms of RSI or GERD-HRQL scores at any time point. Patients with different sub-types of esophageal dysmotility had similar QOL outcomes at all time points. CONCLUSION Patients with esophageal dysmotility had similar outcomes compared to those with normal motility after fundoplication, suggesting the tailored approach favoring partial fundoplication for patients with dysmotility as part of an appropriate treatment algorithm.
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Affiliation(s)
- Harry J Wong
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA. .,Department of Surgery, University of Chicago Medicine, Chicago, IL, USA.
| | - Mason Vierra
- University of Chicago Pritzker School of Medicine, Chicago, IL, USA
| | - Mason Hedberg
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA
| | - Mikhail Attaar
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA.,Department of Surgery, University of Chicago Medicine, Chicago, IL, USA
| | - Bailey Su
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA.,Department of Surgery, University of Chicago Medicine, Chicago, IL, USA
| | - Kristine Kuchta
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA
| | - Gene Chiao
- Department of Gastroenterology, NorthShore University HealthSystem, Evanston, IL, USA
| | - John G Linn
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA
| | - Stephen P Haggerty
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA
| | - Michael B Ujiki
- Department of Surgery, NorthShore University HealthSystem, 2650 Ridge Ave GCSI rmB665 Evanston, Evanston, IL, 60201, USA
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Integrated Relaxation Pressure (IRP) Distinguishes between Reflux-Predominant and Dysphagia-Predominant Phenotypes of Esophageal "Absent Contractility". J Clin Med 2022; 11:jcm11216287. [PMID: 36362515 PMCID: PMC9655163 DOI: 10.3390/jcm11216287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/22/2022] [Accepted: 10/24/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Patients with absent contractility (AC) often suffer from either reflux or dysphagia. It remains unclear what factors determine which phenotype patients present with. We sought to evaluate if high-resolution manometry metrics, especially integrated relaxation pressure (IRP), could explain this. Methods: Cases of AC from three medical centers were reviewed for demographic, clinical, and manometric data. Cases with an IRP between 10−15 mmHg or subsequent diagnosis of achalasia were excluded. Results: 69 subjects were included (mean age 56.1; 71% female). A total of 41 (59.4%) were reflux-predominant. The reflux-predominant group was younger (51.1 vs. 63.5, p = 0.002) and had lower median LES basal pressures (7.5 vs. 12.5 mmHg, p = 0.014) and IRP values (1.5 vs. 5.6 mmHg, p < 0.001) compared to the dysphagia group. When divided into tertiles, the trend in symptoms between LES basal pressure tertiles was not significant. However, the trend for IRP was significant (p < 0.001). For example, in the lowest IRP tertile, 91.3% of subjects were reflux-predominant compared to only 26.1% in the highest tertile, while the dysphagia-predominant group increased from 8.7% to 73.9%. In a regression model controlling for age and using IRP tertile 1 as the reference, having an IRP in tertile 2 increased the likelihood of having dysphagia-predominant disease by 7, while being in tertile 3 increased the likelihood by 22. Conclusions: IRP helps distinguish between the reflux-predominant and dysphagia-predominant phenotypes of AC. This may have therapeutic clinical consequences as procedures such as fundoplication to tighten the LES may benefit patients with reflux and a low IRP, while procedures like peroral endoscopic myotomy (POEM) to disrupt the LES may benefit patients with dysphagia and a relatively high IRP.
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Utility of Functional Lumen Imaging Probe in Long-Term Follow-Up of Children with Esophageal Atresia: A Single-Center Retrospective Study. CHILDREN 2022; 9:children9101426. [PMID: 36291362 PMCID: PMC9600905 DOI: 10.3390/children9101426] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/16/2022] [Accepted: 09/17/2022] [Indexed: 11/23/2022]
Abstract
Long term follow-up of patients with esophageal atresia (EA) may be hampered by esophageal dysmotility, which affects quality of life and might lead to late complications. The endoluminal functional lumen imaging probe (EndoFlip™ Medtronic, Crospon Inc.) is an innovative diagnostic tool that assesses esophageal distensibility. Our aim was to report the use of EndoFlip™ in an EA follow-up, in order to describe distensibility patterns and to determine its possible role for functional evaluation of patients. We retrospectively collected data of EA patients, with a minimum follow-up of 9 years, who required endoscopic evaluation and underwent EndoFlip™. An adaptation of the Medtronic EF-322 protocol was applied and distensibility data were compared to those reported by Pandolfino et al. Nine patients (median age 13 years) were included in the study. The median minimum distensibility was 2.58 mm2/mmHg. Signs of peristalsis were observed in three patients. In one case, the esophagogastric junction (EGJ) after Toupet fundoplication showed low distensibility. EGJ distensibility values of 2.58 mm2/mmHg (median) confirmed both good esophagogastric continence and compliance. Esophagitis and absent peristalsis were found in one patient together with partial stenosis of the fundoplication, confirming the importance of surgical adaptation. Esophageal body distensibility was higher than that of the EGJ. Considering the presence of symptoms, the EndoFlip™ results seem to correlate better with the clinical picture. EndoFlip™ use was safe and feasible in children. It allowed for the measurement of esophageal distensibility and diameter and the acquisition of indirect information on motility with clinical implications. The routine use of EndoFlip™ could be part of EA follow-up, although considerable research is needed to correlate Endoflip™ system measurements to EA patient outcomes.
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Laparoscopic Fundoplication Is Effective Treatment for Patients with Gastroesophageal Reflux and Absent Esophageal Contractility. J Gastrointest Surg 2021; 25:2192-2200. [PMID: 33904061 PMCID: PMC8484087 DOI: 10.1007/s11605-021-05006-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/31/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Anti-reflux surgery in the setting of preoperative esophageal dysmotility is contentious due to fear of persistent long-term dysphagia, particularly in individuals with an aperistaltic esophagus (absent esophageal contractility). This study determined the long-term postoperative outcomes following fundoplication in patients with absent esophageal contractility versus normal motility. METHODS A prospective database was used to identify all (40) patients with absent esophageal contractility who subsequently underwent fundoplication (36 anterior partial, 4 Nissen). Cases were propensity matched based on age, gender, and fundoplication type with another 708 patients who all had normal motility. Groups were assessed using prospective symptom assessment questionnaires to assess heartburn, dysphagia for solids and liquids, regurgitation, and satisfaction with surgery, and outcomes were compared. RESULTS Across follow-up to 10 years, no significant differences were found between the two groups for any of the assessed postoperative symptoms. Multivariate analysis found that patients with absent contractility had worse preoperative dysphagia (adjusted mean difference 1.09, p = 0.048), but postoperatively there were no significant differences in dysphagia scores at 5- and 10-year follow-up. No differences in overall patient satisfaction were identified across the follow-up period. CONCLUSION Laparoscopic partial fundoplication in patients with absent esophageal contractility achieves acceptable symptom control without significantly worse dysphagia compared with patients with normal contractility. Patients with absent contractility should still be considered for surgery.
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FalcÃo AM, Nasi A, Szachnowicz SÉ, Santa-Cruz F, Seguro FCBC, Sena BF, Duarte A, Sallum RA, Cecconello I. Does the nissen fundoplication procedure improve esophageal dysmotility in patients with barrett's esophagus? Rev Col Bras Cir 2020; 47:e20202637. [PMID: 33263652 DOI: 10.1590/0100-6991e-20202637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 07/20/2020] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVE to evaluate esophageal dysmotility (ED) and the extent of Barrett's esophagus (BE) before and after laparoscopic Nissen fundoplication (LNF) in patients previously diagnosed with BE and ED. METHODS twenty-two patients with BE diagnosed by upper gastrointestinal (GI) endoscopy with biopsies and ED diagnosed by conventional esophageal manometry (CEM) were submitted to a LNF, and followed up with clinical evaluations, upper GI endoscopy with biopsies and CEM, for a minimum of 12 months after the surgical procedure. RESULTS : sixteen patients were male (72.7%) and six were females (27.3%). The mean age was 55.14 (± 15.52) years old. and the mean postoperative follow-up was 26.2 months. The upper GI endoscopy showed that the mean length of BE was 4.09 cm preoperatively and 3.91cm postoperatively (p=0.042). The evaluation of esophageal dysmotility through conventional manometry showed that: the preoperative median of the lower esophageal sphincter resting pressure (LESRP) was 9.15 mmHg and 13.2 mmHg postoperatively (p=0.006). The preoperative median of the esophageal contraction amplitude was 47.85 mmHg, and 57.50 mmHg postoperatively (p=0.408). Preoperative evaluation of esophageal peristalsis showed that 13.6% of the sample presented diffuse esophageal spasm and 9.1% ineffective esophageal motility. In the postoperative, 4.5% of patients had diffuse esophageal spasm, 13.6% of aperistalsis and 22.7% of ineffective motor activity (p=0.133). CONCLUSION LNF decreased the BE extension, increased the LES resting pressure, and increased the amplitude of the distal esophageal contraction; however, it was unable to improve ED.
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Affiliation(s)
- Angela M FalcÃo
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil.,- Universidade Federal de Pernambuco, Faculdade de Medicina, Departamento de Cirurgia, Recife - PE - Brasil
| | - Ary Nasi
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - SÉrgio Szachnowicz
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Fernando Santa-Cruz
- - Universidade Federal de Pernambuco, Faculdade de Medicina, Recife - PE - Brasil
| | - Francisco C B C Seguro
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Brena F Sena
- - Departamento de Epidemiologia, Escola de Saúde Pública T.H. Chan de Harvard, Boston - MA - EUA
| | - AndrÉ Duarte
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Rubens A Sallum
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
| | - Ivan Cecconello
- - Universidade de São Paulo, Faculdade de Medicina, Departamento de Gastroenterologia, São Paulo - SP - Brasil
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Tailoring Endoscopic and Surgical Treatments for Gastroesophageal Reflux Disease. Gastroenterol Clin North Am 2020; 49:467-480. [PMID: 32718565 DOI: 10.1016/j.gtc.2020.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The incidence of gastroesophageal reflux disease (GERD) remains on the rise. Pathophysiology of GERD is multifactorial, revolving around an incompetent esophagogastric junction as an antireflux barrier, with other comorbid conditions contributing to the disease. Proton pump inhibitors remain the most common treatment of GERD. Endoscopic therapy has gained popularity as a less invasive option. The presence of esophageal dysmotility complicates the choice of surgical fundoplication. Most literature demonstrates that fundoplication is safe in the setting of ineffective or weak peristalsis and that postoperative dysphagia cannot be predicted by preoperative manometry parameters. More data are needed on the merits of endoluminal approaches to GERD.
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Hu Y, Zhang B, Shi X, Ning B, Shi J, Zeng X, Liu F, Chen JD, Xie WF. Ameliorating Effects and Autonomic Mechanisms of Transcutaneous Electrical Acustimulation in Patients With Gastroesophageal Reflux Disease. Neuromodulation 2019; 23:1207-1214. [PMID: 31859433 DOI: 10.1111/ner.13082] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 09/22/2019] [Accepted: 10/30/2019] [Indexed: 12/25/2022]
Abstract
BACKGROUND/AIM Gastric dysmotility is one of pathophysiologies of gastroesophageal reflux disease (GERD). The aim of this study was to investigate the effects of transcutaneous electrical acustimulation (TEA) on gastric accommodation and gastric slow waves, and evaluate possible mechanisms in patients with GERD. METHODS Thirty patients were studied in two randomized sessions of sham-TEA and TEA with the measurements of esophageal high-resolution manometry (HRM), gastric accommodation assessed by a nutrient-drinking test, electrogastrogram (EGG), electrocardiogram (ECG), and postprandial dyspeptic symptoms. RESULTS Compared with sham-TEA, TEA improved nutrient drinking-induced fullness (42.0 ± 3.3 vs. 31.0 ± 3.5, P = 0.003) at 10 min after the drink, and belching right after the drink (22.0 ± 4.6 vs. 11.7 ± 3.1, P = 0.012) and at 10 min (16.0 ± 3.8 vs. 3.0 ± 1.5, P = 0.002) after the drink. TEA also improved gastric accommodation (954 ± 37 mL vs. 857 ± 47 mL, P = 0.001) and normalized maximal drink-induced impairment in gastric slow waves. Concurrently, TEA enhanced vagal activity assessed from spectral analysis of heart rate variability in the postprandial state (0.42 ± 0.03 vs. 0.49 ± 0.04, P = 0.039). The vagal activity was positively correlated with the percentage of normal slow waves (r = 0.528; P = 0.003) and negatively correlated with the regurgitation score (r = -0.408, P = 0.025). CONCLUSIONS Acute TEA increases gastric accommodation, improves gastric slow waves, and reduces postprandial fullness and belching, possibly mediated via the vagal mechanisms.
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Affiliation(s)
- Yedong Hu
- Department of Gastroenterology, Shanghai East Hospital Affiliated Tongji University, Shanghai, China
| | - Bo Zhang
- Department of Gastroenterology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Xiaodan Shi
- Department of Gastroenterology, Shanghai East Hospital Affiliated Tongji University, Shanghai, China
| | - Beifang Ning
- Department of Gastroenterology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Jian Shi
- Department of Gastroenterology, Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Xin Zeng
- Department of Gastroenterology, Shanghai East Hospital Affiliated Tongji University, Shanghai, China
| | - Fei Liu
- Department of Gastroenterology, Shanghai East Hospital Affiliated Tongji University, Shanghai, China
| | - Jiande Dz Chen
- Division of Gastroenterology and Hepatology, Johns Hopkins University, Baltimore, MD, USA
| | - Wei-Fen Xie
- Department of Gastroenterology, Shanghai East Hospital Affiliated Tongji University, Shanghai, China.,Department of Gastroenterology, Changzheng Hospital, Second Military Medical University, Shanghai, China
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8
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Novel therapies for gastroesophageal reflux disease. Curr Probl Surg 2019; 56:100692. [PMID: 31837718 DOI: 10.1016/j.cpsurg.2019.100692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 10/07/2019] [Indexed: 12/18/2022]
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9
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Bakhos CT, Petrov RV, Parkman HP, Malik Z, Abbas AE. Role and safety of fundoplication in esophageal disease and dysmotility syndromes. J Thorac Dis 2019; 11:S1610-S1617. [PMID: 31489228 DOI: 10.21037/jtd.2019.06.62] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Gastroesophageal reflux disease (GERD) is quite prevalent worldwide, especially in the western hemisphere. The pathophysiology of GERD is complex, involving an incompetent esophagogastric junction (EGJ) as an anti-reflux barrier, as well as other co-morbid conditions such as gastroparesis, hiatal herniation or hyper acid secretion. Esophageal dysmotility is also frequently encountered in GERD, further contributing to the disease in the form of fragmented peristalsis, ineffective esophageal motility (IEM) or the more severe aperistalsis. The latter is quite common in systemic connective tissue disorders such as scleroderma. The main stay treatment of GERD is pharmacologic with proton pump inhibitors (PPI), with surgical fundoplication offered to patients who are not responsive to medications or would like to discontinue them for medical or other reasons. The presence of esophageal dysmotility that can worsen or create dysphagia can potentially influence the choice of fundoplication (partial or complete), or whether it is even possible. Most of the existing literature demonstrates that fundoplication may be safe in the setting of ineffective or weak peristalsis, and that post-operative dysphagia cannot be reliably predicted by pre-operative manometry parameters. In cases of complete aperistalsis (scleroderma-like esophagus), partial fundoplication can be offered in select patients who exhibit prominent reflux symptoms after a comprehensive multidisciplinary evaluation. Roux-en-Y gastric bypass is an alternative to fundoplication in patients with this extreme form of esophageal dysmotility, after careful consideration of the nutritional status.
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Affiliation(s)
- Charles T Bakhos
- Department of Thoracic Medicine and Surgery, Section of Gastroenterology, Temple University Hospital, Philadelphia, PA, USA
| | - Roman V Petrov
- Department of Thoracic Medicine and Surgery, Section of Gastroenterology, Temple University Hospital, Philadelphia, PA, USA
| | - Henry P Parkman
- Department of Medicine, Section of Gastroenterology, Temple University Hospital, Philadelphia, PA, USA
| | - Zubair Malik
- Department of Medicine, Section of Gastroenterology, Temple University Hospital, Philadelphia, PA, USA
| | - Abbas E Abbas
- Department of Thoracic Medicine and Surgery, Section of Gastroenterology, Temple University Hospital, Philadelphia, PA, USA
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Seo HS, Choi M, Son SY, Kim MG, Han DS, Lee HH. Evidence-Based Practice Guideline for Surgical Treatment of Gastroesophageal Reflux Disease 2018. J Gastric Cancer 2018; 18:313-327. [PMID: 30607295 PMCID: PMC6310769 DOI: 10.5230/jgc.2018.18.e41] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 12/21/2018] [Accepted: 12/21/2018] [Indexed: 12/13/2022] Open
Abstract
The prevalence of gastroesophageal reflux disease (GERD) is increasing in Korea, and physicians, including surgeons, have been focusing on its treatment. Indeed, in Korea, medical treatment using a proton pump inhibitor is the mainstream treatment for GERD, while awareness of surgical treatment is limited. Accordingly, to promote the understanding of surgical treatment for GERD, the Korean Anti-Reflux Surgery Study Group published the Evidence-Based Practice Guideline for the Surgical Treatment of GERD. The guideline consists of 2 sections: fundamental information such as the definition, symptoms, and diagnostic tools of GERD and a recommendation statement about its surgical treatment. The recommendations presented 5 debates regarding fundoplication: 1) comparison of the effectiveness of medical and surgical treatments, 2) effectiveness of surgical treatment in cases of refractory GERD, 3) effectiveness of surgical treatment of extraesophageal symptoms, 4) comparison of effectiveness between total and partial fundoplication, and 5) effectiveness of fundoplication in cases of hiatal hernia. The present guideline is the first to demonstrate the efficacy of the surgical treatment GERD in Korea.
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Affiliation(s)
- Ho Seok Seo
- Guideline Committee of Korean Anti-Reflux Surgery (KARS) Study Group.,Division of Gastrointestinal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Miyoung Choi
- Division of Health Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Sang-Yong Son
- Guideline Committee of Korean Anti-Reflux Surgery (KARS) Study Group.,Department of Surgery, Ajou University School of Medicine, Suwon, Korea
| | - Min Gyu Kim
- Guideline Committee of Korean Anti-Reflux Surgery (KARS) Study Group.,Department of Surgery, Hanyang University Guri Hospital, Hanyang University School of Medicine, Seoul, Korea
| | - Dong-Seok Han
- Guideline Committee of Korean Anti-Reflux Surgery (KARS) Study Group.,Department of Surgery, Seoul National University Boramae Hospital, Seoul, Korea
| | - Han Hong Lee
- Guideline Committee of Korean Anti-Reflux Surgery (KARS) Study Group.,Division of Gastrointestinal Surgery, Department of Surgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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