Antireflux surgery enhances gastric emptying

Transient delayed gastric emptying following laparoscopic Nissen fundoplication for gastroesophageal reflux disease

PURPOSE

Although laparoscopic Nissen fundoplication (LNF) is a kind of minimally invasive surgery, some transition time may still be required to allow the fundoplicated stomach to adapt to the new anatomical position. We observed transient delayed gastric emptying (DGE) post-LNF in our preliminary study. This study aimed to investigate the occurrence rate and development of transient DGE post-LNF.

METHODS

Patients who underwent LNF for gastroesophageal reflux disease (GERD) at our institution were recruited consecutively. They were treated with standardized LNF and prospectively followed up for 2 months. Proper diet guidance and/or pharmacologic therapy were given during these 2 months. GERD Health-Related Quality of Life (GERD-HRQL), DGE symptoms, and DGE status were evaluated preoperatively and postoperatively.

RESULTS

Fifty-one patients underwent LNF and completed a 2-month follow-up. LNF succeeded in all patients. Prior to LNF, no DGE was identified. At the 1-month follow-up, LNF led to a significant reduction in the GERD-HRQL total score but a significantly increased DGE score. Endoscopically, DGE was identified in forty-seven (n = 47, 92.2%) patients. At the 2-month follow-up, the GERD-HRQL scores continued to show decreases compared to the 1 month. The DGE score returned to the baseline value. Endoscopically, no DGE was identified in any patients (n = 0, 0.0%).

CONCLUSIONS

Transient DGE is a very common one-month post-LNF but can recover quickly in the second month following LNF.

Differential gastric emptiness according to preoperative stomach position in neurological impaired patients who underwent laparoscopic fundoplication and gastrostomy

PURPOSE

We sometimes experienced prolonged delayed gastric emptying (DGE) in neurologically impaired patients undergoing laparoscopic fundoplication and gastrostomy. We explored the difference in the DGE rate according to the preoperative stomach position.

METHODS

Thirty-two neurological impaired patients who underwent laparoscopic fundoplication and gastrostomy between 2015 and 2019 were classified into two groups based on stomach position: non-elevated stomach position (NESP) and elevated stomach position (ESP). Patients' characteristics, operative result and postoperative gastric emptying were reviewed.

RESULTS

The 11 ESP patients were significantly older than the 21 NESP patients (p < 0.05). The ESP patients had a significantly heavier body weight (BW) than the NESP patients (p < 0.05). The time taken (days) to reduce gastric drainage (days, below BW × 10 ml) in the NESP (4.3 ± 3.6) was significantly longer than that of ESP (1.3 ± 1.6) (p < 0.05). The time taken (days) to achieve full enteral nutrition in the NESP (14.1 ± 8.9) was significantly longer than that of the ESP patients (8.8 ± 3.1) (p < 0.05).

CONCLUSION

Elevated stomach position (ESP) patients archived full enteral nutrition earlier than NESP patients after laparoscopic fundoplication and gastrostomy. Stomach position correction might, therefore, be involved in the incidence of DGE.

Reflux Aspiration Associated with Oesophageal Dysmotility but Not Delayed Liquid Gastric Emptying

INTRODUCTION

Severe oesophageal dysmotility is associated with treatment-resistant reflux and pulmonary reflux aspiration. Delayed solid gastric emptying has been associated with oesophageal dysmotility; however, the role of delayed liquid gastric emptying (LGE) in the pathophysiology of severe reflux disease remains unknown. The purpose of this study is to examine the relationship between delayed LGE, reflux aspiration, and oesophageal dysmotility.

METHODS

Data were extracted from a prospectively populated database of patients with severe treatment-resistant gastro-oesophageal reflux disease. All patients with validated reflux aspiration scintigraphy and oesophageal manometry were included in the analysis. Patients were classified by predominant clinical subtype as gastro-oesophageal reflux (GOR) or laryngopharyngeal reflux. LGE time of 22 min or longer was considered delayed.

RESULTS

Inclusion criteria were met by 631 patients. Normal LGE time was found in 450 patients, whilst 181 had evidence of delayed LGE. Mean liquid half-clearance was 22.81 min. Reflux aspiration was evident in 240 patients (38%). Difference in the aspiration rates between delayed LGE (42%) and normal LGE (36%) was not significant (p = 0.16). Severe ineffective oesophageal motility (IOM) was found in 70 patients (35%) and was independent of LGE time. Severe IOM was strongly associated with reflux aspiration (p < 0.001). GOR dominant symptoms were more common in patients with delayed LGE (p = 0.03).

CONCLUSION

Severe IOM was strongly associated with reflux aspiration. Delayed LGE is not associated with reflux aspiration or severe IOM. Delayed LGE is more prevalent in patients presenting with GOR dominant symptoms.

How to select patients for antireflux surgery? The ICARUS guidelines (international consensus regarding preoperative examinations and clinical characteristics assessment to select adult patients for antireflux surgery)

OBJECTIVE

Antireflux surgery can be proposed in patients with GORD, especially when proton pump inhibitor (PPI) use leads to incomplete symptom improvement. However, to date, international consensus guidelines on the clinical criteria and additional technical examinations used in patient selection for antireflux surgery are lacking. We aimed at generating key recommendations in the selection of patients for antireflux surgery.

DESIGN

We included 35 international experts (gastroenterologists, surgeons and physiologists) in a Delphi process and developed 37 statements that were revised by the Consensus Group, to start the Delphi process. Three voting rounds followed where each statement was presented with the evidence summary. The panel indicated the degree of agreement for the statement. When 80% of the Consensus Group agreed (A+/A) with a statement, this was defined as consensus. All votes were mutually anonymous.

RESULTS

Patients with heartburn with a satisfactory response to PPIs, patients with a hiatal hernia (HH), patients with oesophagitis Los Angeles (LA) grade B or higher and patients with Barrett's oesophagus are good candidates for antireflux surgery. An endoscopy prior to antireflux surgery is mandatory and a barium swallow should be performed in patients with suspicion of a HH or short oesophagus. Oesophageal manometry is mandatory to rule out major motility disorders. Finally, oesophageal pH (±impedance) monitoring of PPI is mandatory to select patients for antireflux surgery, if endoscopy is negative for unequivocal reflux oesophagitis.

CONCLUSION

With the ICARUS guidelines, we generated key recommendations for selection of patients for antireflux surgery.

Severely impaired gastric accommodation is a hallmark of post-Nissen functional dyspepsia symptoms

BACKGROUND

Laparoscopic Nissen fundoplication is a commonly performed antireflux surgery, after which reflux symptoms are well controlled, however, complications such as inability to belch or dyspeptic symptoms (mimicking those of functional dyspepsia [FD]) might occur. The aim of the study was to prospectively evaluate symptom pattern and underlying pathophysiological mechanisms in patients with post-Nissen dyspepsia.

METHODS

Twenty-four patients (12 f, mean age 44.5±2.8 years) with post-Nissen dyspepsia symptoms, five patients (3 f, mean age 38.8±3.2 years) with post-Nissen dysphagia symptoms and 14 pre-fundoplication patients (3 f, mean age 42.1±2.5 years) were evaluated. Patients filled out a Rome II-based dyspepsia symptom severity score, performed a gastric emptying test, and a gastric barostat study was used to evaluate the function of the proximal stomach.

KEY RESULTS

Upper abdominal bloating scores were higher in post-Nissen dyspepsia patients (P=.016) and symptoms of postprandial distress syndrome (PDS) were more present in post-Nissen dyspepsia patients compared to the other two groups (P=.07). Weight loss was significantly higher in the post-Nissen groups compared to the pre-fundoplication (P=.02). Gastric emptying rates were similar in the three groups. Gastric accommodation (GA) was significantly impaired in the post-Nissen dyspepsia group (dyspepsia -30[-86-83] vs dysphagia 163[148-203] vs pre-fundoplication 147[75-174] mL, P=.004) and the prevalence of patients with impaired GA was higher in the post-Nissen group (P=.007). Postprandial fullness was more prevalent in patients with impaired GA compared to those with normal GA (P=.01).

CONCLUSIONS AND INTERFERENCES

Patients with post-Nissen dyspepsia show a symptom pattern similar to that in FD patients with PDS, and the main underlying mechanism seems to be impaired gastric accommodation to a meal.

GERD procedures: when and what?

BACKGROUND

The topic of "when and what" for gastroesophageal reflux disease (GERD) procedures centers on the correct indications for antireflux surgery gleaned from a thorough preoperative evaluation (the "when") and on the right antireflux operation to perform once the ideal candidate is identified (the "what").

AIMS

The goals of this evidence-based review are the following: (1) to identify the key indications for surgery and predictors of good outcomes in the initial evaluation of patients with symptoms of GERD; (2) to describe the operations for GERD in the armamentarium of the general surgeon and their indications, as well as the technical elements of the operation; and (3) to describe the optimal surgical treatment of GERD and obesity when the two diseases coexist.

Early human experience with per-oral endoscopic pyloromyotomy (POP)

INTRODUCTION

Gastroparesis is a condition characterized by delayed gastric emptying, and a constellation of symptoms, including nausea, vomiting, early satiety, and bloating. Although current surgical options such as pyloroplasty have been shown to be effective, an endoscopic submucosal myotomy technique may be applied to divide the pyloric sphincter without surgical access. Such endoscopic technique may provide the benefits of a natural orifice procedure, and improve gastric emptying in gastroparetic patients.

METHODS AND PROCEDURES

Per-oral pyloromyotomy (POP) was performed in seven female patients aged 33-65 years (mean 51 years). All patients had a pre-operative work-up that included upper endoscopy, and a gastric emptying study. A pH study, and esophageal manometry were also performed when a concomitant fundoplication was considered.

RESULTS

POP was technically successful in all seven cases. There were no immediate procedural complications. Perioperative, complications included: one patient with an upper GI bleed 2 weeks post-procedure, necessitating transfusions, and endoscopic clipping of a pyloric channel ulcer; one patient who experienced difficulty swallowing post operatively, delaying discharge by 1 day; and one patient who developed a hospital-acquired pneumonia, delaying discharge by several days. Six of the seven patients experienced significant symptomatic improvement following the procedure. Three month follow-up nuclear medicine solid-phase gastric emptying studies are currently available for 5 of the 7 patients. Normal gastric emptying at 4 h was noted in four of five patients (80 %). One patient did not respond to endoscopic management subsequently underwent an uneventful laparoscopic pyloroplasty, which also failed to significantly improve her symptoms.

CONCLUSION

POP is a technically safe and feasible endoscopic procedure. Early follow-up suggests promising symptomatic improvement as well as objective improvement in gastric emptying. Additional clinical experience is required to establish the role of this technique in the management of gastroparesis.

Preoperative diagnostic workup before antireflux surgery: an evidence and experience-based consensus of the Esophageal Diagnostic Advisory Panel

BACKGROUND

Gastroesophageal reflux disease (GERD) is a very prevalent disorder. Medical therapy improves symptoms in some but not all patients. Antireflux surgery is an excellent option for patients with persistent symptoms such as regurgitation, as well as for those with complete symptomatic resolution on acid-suppressive therapy. However, proper patient selection is critical to achieve excellent outcomes.

STUDY DESIGN

A panel of experts was assembled to review data and personal experience with regard to appropriate preoperative evaluation for antireflux surgery and to construct an evidence and experience-based consensus that has practical application.

RESULTS

The presence of reflux symptoms alone is not sufficient to support a diagnosis of GERD before antireflux surgery. Esophageal objective testing is required to physiologically and anatomically evaluate the presence and severity of GERD in all patients being considered for surgical intervention. It is critical to document the presence of abnormal distal esophageal acid exposure, especially when antireflux surgery is considered, and reflux-related symptoms should be severe enough to outweigh the potential side effects of fundoplication. Each testing modality has a specific role in the diagnosis and workup of GERD, and no single test alone can provide the entire clinical picture. Results of testing are combined to document the presence and extent of the disease and assist in planning the operative approach.

CONCLUSIONS

Currently, upper endoscopy, barium esophagram, pH testing, and manometry are required for preoperative workup for antireflux surgery. Additional studies with long-term follow-up are required to evaluate the diagnostic and therapeutic benefit of new technologies, such as oropharyngeal pH testing, multichannel intraluminal impedance, and hypopharyngeal multichannel intraluminal impedance, in the context of patient selection for antireflux surgery.

Nissen fundoplication in children with cerebral palsy: influence on rate of gastric emptying and postprandial symptoms in relation to protein source in caloric liquid meals

BACKGROUND & AIMS

The aim was to study the influence of Nissen fundoplication on rate of gastric emptying and postprandial symptoms in relation to protein source in liquid meals in children with cerebral palsy.

METHODS

Ten children with cerebral palsy and Nissen fundoplication and ten with cerebral palsy without Nissen fundoplication were studied. Patients had gastrostomy and received two meals, double-blinded, in random order, on separate days. Meals contained a standardised carbohydrate and fat base plus one of two protein modules (Meal A: 100% casein; Meal B: 40% casein/60% whey). The (13)C octanoic acid breath test was used to assess gastric emptying. Postprandial symptoms were recorded. Results are given as median.

RESULTS

For meal A and B, respectively, time until 50% of the meal had emptied (T1/2) was 110 in the Nissen fundoplication- and 181 min in the non-Nissen fundoplication group, (p = 0.35) and 50 and 85 min (p = 0.25). Seven in the Nissen fundoplication group reported postprandial symptoms to meal B, none in the non-Nissen fundoplication group (p < 0.01).

CONCLUSIONS

Compared with cerebral palsy-children without Nissen fundoplication, those with Nissen fundoplication have postprandial symptoms more frequently after receiving a rapid emptying meal. Gastric emptying alone, however, does not seem to explain the symptom occurrence. ClinicalTrials.gov: UUSKBK 28200706.

Laparoscopic anterior hemifundoplication improves key symptoms without impact on GE in children with and children without neurodevelopmental delays

AIM

We investigated the impact of laparoscopic anterior hemifundoplication on gastric emptying (GE) and specific symptoms in children with and children without neurodevelopmental delays gastroesophageal reflux. Scintigraphic and ultrasonographic GE measurements were correlated.

PATIENTS AND METHODS

Twenty-six children (mean age 7 ± 6.1 years), of whom 14 were neurodevelopmentally delayed, were evaluated prospectively before 3 and 6 months after laparoscopic anterior hemifundoplication. All of the patients underwent clinical assessments, interviews, and 24-hour pH monitoring. Key symptoms were evaluated using a 5-point Likert scale. Gastric emptying was assessed by Tc-99m-DTPA-scintigraphy and ultrasonography.

RESULTS

All of the children had significant catch-up growth after fundoplication, which was more pronounced in the neurologically normal children (P < 0.05 vs impaired), in line with a decrease in the use of omeprazol (mean 0.93 ± 0.7 mg · kg(-1) · day(-1) before and 0.06 ± 0.18 mg · kg(-1) · day(-1) at 6 months after operation; P < 0.001). The 24-hour pH monitoring normalized in all of the children, and the mean severity of the key symptoms such as vomiting, choking, and pain was significantly reduced (P < 0.001). Scintigraphic GE parameters, such as the elimination rate/minute, gastric half-emptying time (t1/2), gastric residual activity (RA), and duration of the initial merging time, were not altered significantly by the operation (P > 0.05). Ultrasonographic evaluations confirmed these results [positive correlation with scintigraphy for t1/2 (P = 0.006) and RA (P = 0.01)]. The symptoms evolution and GE were uncorrelated (P > 0.01). There were no significant differences between children with and children without neurodevelopmental delays.

CONCLUSIONS

Laparoscopic anterior hemifundoplication achieves an excellent symptomatic outcome without affecting GE in children with and children without neurodevelopmental delays.

Preoperative gastric emptying and patterns of reflux as predictors of outcome after laparoscopic fundoplication

BACKGROUND

Some studies have suggested that patients with predominantly upright reflux have a poor outcome after laparoscopic antireflux surgery. It has been proposed that this might be related to gastric emptying. The aim of this study was to evaluate the relationship between preoperative upright reflux pattern, gastric emptying rate and outcome after laparoscopic fundoplication.

METHODS

Patients presenting for antireflux surgery underwent 24-h ambulatory pH testing and dual-isotope radionuclide gastric emptying studies. Reflux pattern was determined by the acid exposure in the distal oesophagus (percentage of time at pH < 4) during supine and upright posture. Outcome after fundoplication was assessed by a standardized postal questionnaire administered at 3 months, and 1, 2 and 5 years after surgery.

RESULTS

Of 372 patients identified from a prospectively maintained database, 109 had upright reflux, 57 supine reflux and 206 bipositional reflux. Overall patient satisfaction was not influenced by reflux pattern at any time after surgery. Delayed gastric emptying was documented in 31.0 per cent of patients, but there was no relationship with reflux pattern.

CONCLUSION

Patients with upright reflux did not have a less favourable outcome after fundoplication. Categorizing patients according to reflux pattern is of no value in predicting outcome or selecting patients for surgery.

Delayed gastric emptying in patients undergoing antireflux surgery: analysis of a treatment algorithm

PURPOSE

Controversy remains about the treatment of patients with mild delayed gastric emptying (90 min < emptying half-time [T(1/2)] < 180 min) who undergo antireflux surgery. This retrospective, nonrandomized study reviewed the records of patients treated from January 1996 through October 2003, during which time we applied two treatment algorithms for patients with mild delayed gastric emptying. The goal of this study was to determine whether the most recent treatment algorithm was effective in reducing the need for a concomitant gastric drainage procedure, pyloroplasty.

MATERIALS AND METHODS

Eighteen patients with mild delayed gastric emptying underwent antireflux surgery plus pyloroplasty (group A) before 2001, and 13 patients with mild delayed gastric emptying underwent antireflux surgery plus gastric decompression with percutaneous endoscopic gastrostomy placement (group B) starting in 2001. We reviewed indications for the procedure, complications, and outcomes. Primary outcome measures for this study were recurrence of gastroparesis symptoms and need for pyloroplasty.

RESULTS

The average T(1/2) was similar for both groups A and B: 129 min and 123 min, respectively. Eleven of 13 patients (85%) in group B experienced resolution of gastroparesis symptoms, improved gastric emptying times, or both; only 1 patient (8%) underwent subsequent pyloroplasty for treatment failure. Only one serious percutaneous endoscopic gastrostomy-related event occurred (tube migration), and no patients died. Significantly fewer patients in group B required total pyloroplasty (8% vs. 56% in group A; P < 0.008), and significantly fewer required pyloroplasty for symptomatic control (15% vs. 56% in group A; P < 0.03).

CONCLUSION

A treatment algorithm incorporating percutaneous endoscopic gastrostomy tube placement at the time of antireflux surgery for gastric decompression successfully managed antireflux surgery patients with mild delayed gastric emptying. This approach allows for a more selective use of pyloroplasty.

Gastric emptying of glucose solution and associated plasma concentrations of GLP-1, GIP, and PYY before and after fundoplication

BACKGROUND

This study was designed to assess the relationship between gastric emptying of glucose solution and the ensuing plasma concentrations of glucagon-like peptide-1 (GLP-1), peptide YY (PYY), and glucose-dependent insulinotropic polypeptide (GIP) in patients having undergone fundoplication for gastroesophageal reflux (GERD).

SUBJECTS AND METHODS

In 10 male patients the emptying of 50% glucose solution was determined scintigraphically and its relationship with plasma glucose, GLP-1, PYY, and GIP concentrations was studied before and 3 months after fundoplication.

RESULTS

In the first 30 min after glucose ingestion, emptying was significantly (p = 0.048) faster after fundoplication than before. Emptying and GLP-1 and GIP correlated: the faster the emptying during the first 30 min the greater the concentrations integrated over that period (p = 0.04; p = 0.01; p = 0.02). Emptying and PYY concentrations were unrelated. In the 120-180 min. period, blood glucose concentrations were lower the faster the emptying in the initial 30 min (p = 0.06) and the entire 50-min recording period (p = 0.03) had been. The GLP-1 concentrations integrated over the first 30 min correlated inversely with the integrated plasma glucose during the third hour after ingestion (p = 0.004).

CONCLUSIONS

After fundoplication, gastric emptying may, if accelerated in its initial phases, give rise to greater and earlier increases in plasma glucose, GLP-1, and GIP concentrations and thus to reactive hypoglycemia.

Quality of life and predictors of long-term outcome in patients undergoing open Nissen fundoplication for chronic gastroesophageal reflux

BACKGROUND

Long-term outcome of antireflux operations as well as pre- and postoperative parameters able to predict their clinical results are still controversial. The aim of the present study was to evaluate long-term quality of life of patients undergoing open fundoplication for chronic GERD and to investigate pre- and early postoperative functional parameters possibly related to persistence or recurrence of symptoms.

METHODS

A cohort of 25 patients who underwent open Nissen fundoplications was reviewed for an evaluation of long-term residual symptoms and quality of life at an average follow-up of more than 10 years. Clinical evaluation was performed by using a symptom-specific score (DeMeester's score), 3 health-related quality of life scores, a GERD-specific (GERD-HRQL score) score, and 2 generic scores (SF-36) evaluating physical and psychological well-being. Subjective satisfaction grade of the patients was also investigated. In addition, a univariate analysis is provided, according to the long-term presence or absence of residual symptoms (120.6-month follow-up), taking into account pre- and postoperative (6-month follow-up) data of endoscopy, 24-hour pH monitoring, stationary manometry, and gastric-emptying test.

RESULTS

Persistence or recurrence of GERD-specific symptoms (heartburn and regurgitation) were reported by 8 patients (32%); 2 patients (8%) were reoperated on for persistent dysphagia, whereas 17 patients (68%) were asymptomatic. GERD-HRQL and SF-36 scores displayed significant postoperative improvement, which continued in long-term follow-up. Twenty patients (80%) had repeat fundoplication. Among tested parameters, only postoperative mean supine esophageal clearance and gastric emptying half-time, although on average improved significantly after the antireflux procedure, differed significantly in long-term asymptomatic and symptomatic subgroups. In long-term asymptomatic patients, postoperative (6 month) mean supine esophageal clearance was 0.8 +/- 0.3 minutes (P = .011) and 2.4 +/- 0.2 minutes in symptomatic patients. Postoperative (6 month) mean gastric emptying half-time of long-term asymptomatic patients was 93.3 +/- 8.9 minutes, whereas in symptomatic patients it was 127.5 +/- 14.3 minutes (P = .047).

CONCLUSIONS

Patients undergoing Nissen fundoplication had a satisfactory long-term quality of life. Clinical results did not deteriorate over time and showed to be related to postoperative esophageal clearance and gastric emptying, which could be regarded as early postoperative predictors of long-term clinical outcome.

Changes in functional gastrointestinal symptoms as a result of antireflux surgery

BACKGROUND

This study identifies how functional symptoms are altered after antireflux surgery and whether there are any predictors of such change.

METHODS

A total of 206 patients underwent successful laparoscopic Nissen fundoplication. A questionnaire was sent at a median of 4.3 years (range = 0.3-8.4) after fundoplication. Patients were asked to provide scores for reflux and functional symptoms that were experienced prior to surgery and at the time of the questionnaire.

RESULTS

Eighty-one percent of patients responded. Scores for heartburn, regurgitation, and difficulty swallowing were felt to have significantly improved (p < 0.01). Flatulence was the only functional symptom to have significantly worsened (p < 0.01). A regression analysis incorporating prospectively collected data identified variables that were predictive of changes in functional symptoms following surgery.

CONCLUSIONS

Flatulence was the only functional symptom to have worsened overall after surgery. Predictors of changes in functional symptoms may help clinicians when informing patients about gastrointestinal side effects following antireflux surgery.

Surgical therapy for Barrett's esophagus

Given the anatomic and functional defects almost universally present in patients who have BE, antireflux surgery is the most reliable means of stopping acid and nonacid (alkaline) reflux. Because patients who have BE have end-stage GERD, they require durable and reliable control of reflux, and the Hill procedure and partial fundoplication are associated with unacceptably high failure rates. In addition, there is mounting evidence that the success rates for Nissen fundoplication are lower in patients who have BE than in patients who have less severe GERD. Given that the most common mode of failure of a laparoscopic Nissen fundoplication is herniation of the fundoplication into the chest, patients who have BE must be considered at risk for having a short esophagus. The failure rate may be reduced by the liberal addition of a Collis gastroplasty, but the long-term consequences of acid-secreting mucosa left above the fundoplication in patients who have BE remain unclear. Patients suspected of having a short esophagus on the basis of a large hiatal hernia, stricture, or long-segment BE should be considered for a transthoracic approach to their fundoplication, as this affords good esophageal mobilization and may obviate the need for a gastroplasty. Surgeons must pay particular attention to their own and published results and continue to refine the operation to maximize the likelihood of a good outcome in this difficult group of patients. It is only with excellent control of reflux that any differences in the risk of progression to dysplasia and cancer become apparent, and significant, between medically and surgically treated patients.

Gastrointestinal complications of fundoplication

In children with medically refractory gastroesophageal reflux disease (GERD), fundoplication is effective and safe. However, in a subset of patients, gastrointestinal dysfunction occurs postoperatively. Symptoms include chest pain, persistent dysphagia in 5%, gas bloat in 2% to 4%, diarrhea in up to 20%, and dumping syndrome in up to 30%. Symptoms are often nonspecific, arising from recurrent or persistent GERD, anatomic complications such as disrupted or herniated wrap, functional disturbances such as rapid gastric emptying or altered gastric accommodation, or alternative diagnoses such as cyclic vomiting syndrome or food allergy. Detailed investigation, including various combinations of pHmetry, videofluoroscopy, endoscopy, motility studies, and dumping provocation testing, may be required to clarify pathophysiology and guide management.

Long-term clinical and pathologic response of Barrett's esophagus after antireflux surgery

BACKGROUND

The impact of antireflux surgery on outcome in Barrett's esophagus, in particular its effect on both the regression of metaplasia and the progression of metaplasia through dysplasia to adenocarcinoma, remains unclear. This long-term follow-up study evaluated clinical, endoscopic, histopathologic, and physiologic parameters in patients with Barrett's esophagus who underwent antireflux surgery in a specialist unit.

METHODS

Between 1985 and 2001, 58 patients with Barrett's esophagus (49 long-segment and 9 short-segment) underwent a Rossetti-Nissen fundoplication, 32 via open procedure and 26 laparoscopically. Symptomatic follow-up with a detailed questionnaire was available in 58 (100%) and follow-up endoscopy and histology in 57 (98%) patients, and 41 patients (71%) underwent preoperative and postoperative 24-hour pH monitoring.

RESULTS

At a median follow-up of 59 months, 52 patients (90%) had excellent symptom control, whereas 6 patients (10%) had significant recurrent symptoms and were on regular proton pump inhibitor medication. Seventeen of 41 patients having preoperative and postoperative pH monitoring (41%) had a persistent increase of acid reflux above normal. Thirty-five percent (20 of 57) of patients showed either partial or complete regression of Barrett's epithelium. Six of 8 patients with preoperative low-grade dysplasia showed evidence of regression. Dysplasia developed after surgery in 2 patients, and 2 patients developed adenocarcinoma at 4 and 7 years after surgery. All 4 of these patients had abnormal postoperative acid scores.

CONCLUSIONS

Nissen fundoplication provides excellent long-lasting relief of symptoms in patients with Barrett's esophagus and may promote regression of metaplasia and dysplasia. Control of symptoms does not concord fully with abolition of acid reflux. Progression of Barrett's to dysplasia and tumor was only evident in patients with abnormal postoperative acid scores, suggesting that pH monitoring has an important role in the follow-up of surgically treated patients.

Five-year comprehensive outcomes evaluation in 181 patients after laparoscopic Nissen fundoplication

BACKGROUND

We conducted an objective followup of 181 patients after laparoscopic Nissen fundoplication during a 5-year period after surgery.

STUDY DESIGN

Patients underwent 24-hour pH recording, esophageal manometry, and symptom score assessment for six gastroesophageal reflux disease symptoms preoperatively and at 6 months, 2 years, and 5 years after surgery.

RESULTS

Laparoscopic fundoplication was associated with a significant (p < 0.0001) increase in lower esophageal sphincter pressure and a significant (p < 0.0001) drop in duration of acid reflux in 24 hours, and symptom score, 6, 24, and 60 months after surgery when compared with preoperative values. Twenty-one patients (12%) have experienced recurrence of reflux-type symptoms, but only six have required repeat surgery. Lower esophageal sphincter tone dropped between 6 months and 5 years after surgery, but was still an effective antireflux barrier. Patient satisfaction with surgery dropped over the 5-year followup but remained high, at 86%, after 5 years.

CONCLUSIONS

Laparoscopic Nissen fundoplication remains an effective antireflux procedure at 5 years.

Impact of delayed gastric emptying on the outcome of antireflux surgery

OBJECTIVE

To study the effect of Nissen fundoplication on the pattern of gastric emptying and intragastric distribution of symptoms in patients with normal and delayed gastric emptying before surgery, especially in those with delayed emptying before surgery.

SUMMARY BACKGROUND DATA

Gastroesophageal reflux disease is associated with delayed gastric emptying and dyspeptic symptoms in approximately 40% of the patients. After Nissen fundoplication, dyspeptic symptoms are also not uncommon.

METHODS

Thirty-six patients (26 men, 10 women, mean age 43.1) were studied before and 3 months after Nissen fundoplication. Gastric emptying (dual-isotope, expressed in lag phase, emptying rate, T50, and intragastric distribution) was not included in the decision for surgery. Reflux-related and dyspeptic symptoms were scored before and at 3, 6, and 12 months after surgery.

RESULTS

Twenty-six patients had normal and 10 had delayed gastric emptying before surgery. Nissen fundoplication on average enhanced gastric emptying for solids in both subgroups by a combination of a decrease in mean lag phase, emptying rate, and T50. The preoperative difference in intragastric distribution between patients with and without delayed gastric emptying was abolished by fundoplication. Patients with normal gastric emptying before surgery showed an increase in early postprandial satiety; in those with delayed emptying, this was not observed. A correlation was found between preoperative T50 for liquid gastric emptying and postoperative nausea at 3 months in patients with normal gastric emptying. In patients with delayed emptying, preoperative correlations between lag phase for liquids and nausea respectively early satiety were significant, as well as for T50 for liquids and vomiting.

CONCLUSIONS

Nissen fundoplication equalizes the preoperative difference in intragastric distribution and accelerates gastric emptying without an effect on symptoms in patients with preexisting delayed gastric emptying, but with an increase in early satiety in patients with normal gastric emptying. Delayed gastric emptying is not a contraindication for antireflux surgery.

Dysphagia after antireflux surgery

BACKGROUND

Dysphagia is experienced by many patients after antireflux surgery. This literature review examines factors associated with the development, prediction and management of postoperative dysphagia.

METHODS

Published studies examining issues related to dysphagia, gastro-oesophageal reflux and fundoplication were reviewed.

RESULTS

Postoperative dysphagia is usually temporary but proves troublesome for 5--10 per cent of patients. Technical modifications, such as a partial wrap, division of short gastric vessels and method of hiatal closure, have not conclusively reduced its incidence. There is no reliable preoperative test to predict dysphagia.

CONCLUSION

It is uncertain whether postoperative dysphagia arises from patient predilection or is largely a consequence of mechanical changes created by fundoplication. Anatomical errors account for a significant proportion of patients referred for correction of dysphagia but these are uncommon in large single-institution studies. Abnormal manometry cannot predict dysphagia and, on current evidence, 'tailoring' the operation does not prevent its occurrence.

Embryologic and anatomic basis of esophageal surgery

The embryogenesis, congenital anomalies, and surgical anatomy and applications of the esophagus for benign and malignant processes are detailed in this article. Emphasis is placed on the role of embryology and the anatomy involved in surgical decisions.