Anti-reflux surgery for patients with esophageal atresia

Experience in the treatment of long-gap esophageal atresia by intraluminal esophageal stretching elongation

Objective

To summarize the experience with intraluminal esophageal stretching elongation (ILESE) in the successful treatment of long-gap esophageal atresia (LGEA) at a single center.

Methods

Clinical data of 68 neonates who underwent LGEA between February 2015 and January 2022 were retrospectively analyzed. Four patients died of multiple associated severe malformations and did not undergo ILESE. Esophageal anastomosis was successfully performed in 60 cases (93.75%) and failed in 4 cases (6.25%) treated with ILESE. The ILESE techniques, esophageal reconstruction, results, postoperative complications, and follow-up treatment were analyzed.

Results

The beginning time of performing ILESE preoperation was 53.4 ± 39.4 days after birth, and the age of esophageal reconstruction was 122.2 ± 70.3 days after birth in 60 cases. The gap length of proximal and distal esophageal segments which were evaluated the first time at admission was 4.8 ± 1.3 vertebral bodies, whereas the gap before anastomosis was -0.46 ± 0.90 vertebral bodies. Among the patients with esophageal primary-anastomosis, 55 received thoracoscopic surgery, and 5 underwent thoracotomy in the early stage. Of the 60 children with ILESE, 58 underwent end-to-end esophagostomy, of which 17 cases were combined with circular esophagotomy (livaditis), and 2 cases of esophageal lengthening were combined with the reversal of the ligulate loop of the proximal esophagus (flap). Overall, 59 cases were cured (98.3%), and 1 patient died of respiratory failure postoperatively. All patients were followed up for 7-96 months. Postoperative anastomotic leakage occurred in 16 patients (27.6%), all of whom were successfully treated conservatively. Anastomotic stenosis occurred in 49 cases (83.1%), all of which were successfully managed by non-surgical treatment, including 12.7 ± 9.3 times of esophageal balloon dilatation and 2 cases of stent dilatation. Gastroesophageal reflux occurred in 44 patients (74.6%), including associated or acquired esophageal hiatal hernia in 22 patients, and Nissen fundoplication was performed in 17 patients.

Conclusions

ILESE is an effective method for prolonging the proximal and distal esophagus of the LGEA to reconstruct esophageal continuity using its esophageal tissue, with an efficacy rate of 93.75%. Postoperative anastomotic stricture and gastroesophageal reflux are common and require long-term, standardized follow-up and treatment.

Utility of Functional Lumen Imaging Probe in Long-Term Follow-Up of Children with Esophageal Atresia: A Single-Center Retrospective Study

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.

Long-Term Outcomes and Health-Related Quality of Life in a Swiss Patient Group with Esophageal Atresia

INTRODUCTION

 Surgical treatment of esophageal atresia (EA) has markedly improved, allowing the focus to shift from short-term complications and mortality to long-term complications and quality of life. Health-related quality of life (HRQoL) is variable and reported to range from reduced to unimpaired in patients with repaired EA. We assessed the HRQoL, determined the prevalence of long-term complications and their possible impact on the HRQoL in patients who had correction of EA in Switzerland. Further, we also investigated in the general well-being of their parents.

MATERIALS AND METHODS

 Patients with EA repair in Switzerland between 1985 and 2011 were enrolled. Long-term complications were assessed by enquiring disease-related symptoms, standardized clinical examinations, and analysis of radiographs. HRQoL was inquired using different validated questionnaires (KIDSCREEN-27, World Health Organization [WHO]-5, and Gastrointestinal Quality of Life Index [GIQLI]). Patients were grouped according to their age. In underage patients, general well-being of the parents was assessed using the WHO-5 questionnaire.

RESULTS

 Thirty patients were included with a mean age of 11.3 ± 5.7 years. Long-term complications were present in 63% of all patients. HRQoL in underage patients was comparable to the provided reference values and rated as good, while adult patients reported a reduced HRQoL. The presence of gastroesophageal reflux disease symptoms was associated with reduced HRQoL in underage patients. Parents of underage patients stated a good general well-being.

CONCLUSION

 Long-term complications among patients with repair of EA in Switzerland are common. HRQoL in underage patients is good and general well-being of their parents is unimpaired. Adult patients reported a reduced HRQoL, consistent with other reports. As long-term complications may manifest only later in life, a structured follow-up of patients with an EA repair during childhood and adolescence is needed.

Laparoscopic fundoplication after oesophageal atresia repair

BACKGROUND

Esophageal atresia (EA) is a rare congenital malformation. A high incidence of GER unresponsive to medical management is noted with EA. Literature suggests that complications from GER can persist in adulthood. In paediatric age, laparoscopic treatment is a valid option even if recurrence rate is not negligible.

AIMS AND OBJECTIVES

To evaluate our experience with gastro-esophageal reflux (GER) treatment after esophageal atresia (EA) repair.

MATERIALS AND METHODS

We retrospectively analysed 29 consecutive patients treated for EA at birth and studied for GER at our Institute in a period of 11 years.

RESULTS

24/29 (82,7%) cases had symptoms of reflux, 17/29 (58,6%) cases were treated with laparoscopic fundoplication (LF). Three infants were younger than 6 months and had apparent life threatening events (ALTE) condition as principal indication for surgery. No intra-operative complications occurred. 3/17 LF had open surgical conversion due to technical problems. 2/17 cases required a second operation. At the last follow-up: (1) 6/17 (35,3%) of patients healed after the last operation, (2) 8/17 (47,1%) have GER improvement (four still in medical treatment), (3) 2/17 (11,8%) have persistent GER, (4) 1/17 (5,9%) died for causes not related to antireflux surgery.

CONCLUSIONS

According to literature and to our retrospective analysis, LF for GER after EA repair is feasible, even if recurrence risk is not negligible. Infants less than 6 months old with associated conditions (malformations, gastrostomy/jejunostomy) seem to have a higher failure rate with a greater risk of conversion. Longer follow-up and multicenter experiences would guarantee an adequate surveillance for patients with EA.

Can 18-years of data from a tertiary referral center help to identify risk factors in esophageal atresia?

BACKGROUND

Esophageal atresia is a complex esophageal malformation with an incidence of 1 in 3,500-4,000 live births, and it usually occurs together with anomalies in other systems or chromosomes. This study aimed to investigate the short-term and long-term results of cases of esophageal atresia retrospectively in our institution and to analyze the factors affecting the outcome.

METHODS

Charts of the patients managed for esophageal atresia in our tertiary pediatric surgery department were investigated retrospectively. Statistical analysis was performed to determine the risk factors for morbidity and mortality.

RESULTS

One hundred and thirteen (95.8%) of 118 cases underwent a single-stage or staged esophagoesophagostomy procedure. In only five of the 40 patients with a long gap between the two atretic ends was an esophageal replacement procedure required. The most common early and late complications were anastomotic stenosis (41.6%) and gastroesophageal reflux (44.9%). In logistic regression analysis, the birthweight (OR [95% CI] = 0.998 [0.997, 0.999], P = 0.001) and preoperative inotrope requirement (OR [95% CI] = 13.8 [3.6-53.3], P < 0.001) were the two risk factors in the mortality prediction model obtained by multivariate analysis. The gap length between the two atretic ends (OR [95% CI] = 1.436 [1.010, 2.041], P = 0.044) and the number of sutures for anastomosis (OR [95% CI] = 1.313 [1.042, 1.656], P = 0.021) were the two risk factors in the gastroesophageal reflux prediction model obtained by multivariate analysis.

CONCLUSIONS

Our study's early and late complication rates were like those found in other studies. Identifying risk factors would be beneficial and might help reduce the severity of potential complications in esophageal atresia patients. Prospective studies on large patient series would help develop registry-based, standardized management protocols.

Predictors of the Performance of Early Antireflux Surgery in Esophageal Atresia

OBJECTIVE

To identify predictors of and factors associated with the performance of antireflux surgery during the first year of life in children born with esophageal atresia.

STUDY DESIGN

All patients were included in a French registry for esophageal atresia. All 38 multidisciplinary French centers completed questionnaires about perinatal characteristics and one-year outcome for children born with esophageal atresia.

RESULTS

Of 835 infants with esophageal atresia born in France from 2010 to 2014, 682 patients, excluding those with long-gap esophageal atresia, were included. Three patients had type I, 669 had type III, and 10 had type IV esophageal atresia. Fifty-three children (7.8%) received fundoplication during the first year of life. The median age at the time of the end-to-end esophageal anastomosis was 1.1 day (range 0-15). Multivariate analysis identified three perioperative factors that predicted the need for early antireflux surgery: anastomotic tension (P = .004), associated malformations (P = .019), and low birth weight (P = .018). Six other factors, measured during the first year of life, were associated with the need for antireflux surgery: gastroesophageal reflux (P < .001), anastomotic stricture (P < .001), gastrostomy (P < .001), acute life-threatening event (P = .002), respiratory complications (P = .045), and poor nutritional status (P < .001).

CONCLUSIONS

Gastroesophageal reflux disease, low birth weight, poor nutrition, and surgical anastomosis difficulties predicted the performance of antireflux surgery in the first year of life in infants with esophageal atresia.

Surgical repair of long-gap esophageal atresia: A retrospective study comparing the management of long-gap esophageal atresia in the Nordic countries

BACKGROUND

Several surgical procedures have been described in the reconstruction of long-gap esophageal atresia (LGEA). We reviewed the surgical methods used in children with LGEA in the Nordic countries over a 15-year period and the postoperative complications within the first postoperative year.

METHODS

Retrospective multicenter medical record review of all children born with Gross type A or B esophageal atresia between 01/01/2000 and 12/31/2014 reconstructed within their first year of life.

RESULTS

We included 71 children; 56 had Gross type A and 15 type B LGEA. Delayed primary anastomosis (DPA) was performed in 52.1% and an esophageal replacement procedure in 47.9%. Gastric pull-up (GPU) was the most frequent procedure (25.4%). The frequency of chromosomal abnormalities, congenital heart defects and other anomalies was significantly higher in patients who had a replacement procedure. The frequency of gastroesophageal reflux (GER) was significantly higher after DPA compared to esophageal replacement (p = 0.013). At 1-year follow-up the mean body weight was higher after DPA than after organ interposition (p = 0.043).

CONCLUSION

DPA and esophageal replacement procedures were equally applied. Postoperative complications and follow-up were similar except for the development of GER and the body weight at 1-year follow-up. Long-term results should be investigated.

TYPE OF STUDY

Treatment study.

LEVEL OF EVIDENCE

Level III.

Impact of Esophageal Atresia on the Success of Fundoplication for Gastroesophageal Reflux

OBJECTIVES

Fundoplication is commonly performed in patients with a history of esophageal atresia (EA), however, the success of this surgery is reduced, as reflected by an increased rate of redo fundoplication. We aimed to determine whether EA impacts the prevalence of fundoplication, its timing, and performance of a redo operation.

STUDY DESIGN

A single-center, retrospective review of all patients undergoing fundoplication over a 20-year period (1994-2013) was performed. Redo fundoplication was used as a surrogate for surgical failure.

RESULTS

A total of 767 patients (patients with EA 85, those who did not have EA 682) underwent fundoplication during the study period. Median age (months) at primary fundoplication was lower in patients with EA (7.2 vs those who did not have EA 23.3; P < .001). Redo fundoplication rates between groups were not significantly different (EA 11/85 vs 53/682; P = .14). Median time (months) between primary and redo fundoplication was greater in patients with EA (36.2 vs 11.7; P = .03).

CONCLUSIONS

Contrary to popular belief, the incidence of redo fundoplication was not significantly increased in patients with a history of EA. However, patients with EA underwent fundoplication at younger ages, which may be related to early life-threatening events in these patients. These results inform perioperative counseling, and highlight the importance of sustained surgical follow-up in patients with EA.

Outcomes of fundoplication in oesophageal atresia associated gastrooesophageal reflux disease

AIM OF THE STUDY

Conservative management of gastrooesophageal reflux (GORD) in oesophageal atresia (OA) is sometimes inefficient, and fundoplication is required. We assessed the outcomes of fundoplication among OA patients from 1980 to 2016.

METHODS

After ethical consent, hospital records of 290 patients, including 22 referred patients, were reviewed. Included were 262 patients with end-to-end repair. Excluded were patients who underwent oesophageal reconstruction (n=23) or no repair (n=5). Primary outcome measures included survival, retaining the native oesophagus, resolution of GGORD symptoms, failure of fundoplication, and long-term endoscopic results.

MAIN RESULTS

Gross types of OA in 262 patients were A (n=12), B (n=2), C (n=217), D (n=10), E (n=19), and F (n=2). Eighty-six (33%) patients, type A (n=12, 100%), B (n=2, 100%), C (n=69, 31%), D (n=3, 30%), and F (n=1, 50%), underwent fundoplication at the median age of 5.4 (IQR 3.1-16) months. Main indications included recalcitrant anastomotic stenosis (RAS) in 41 (48%), respiratory symptoms in 16 (19%), and acute life threatening events (ALTE) in 15 (17%) of patients. Associated tracheomalacia in 25 (29%) patients were treated with aortopexy. Median follow-up was 7.5 (IQR 1.8-15) years. RAS resolved in 30 (73%) patients, whereas 11 (27%) with unresolved RAS underwent oesophageal resection (n=8) or replacement (n=3). Six (7%) patients died of heart failure (n=4), bolus impaction (n=1), and ALTE (n=1). Fundoplication failed in 27 (31%) patients, and 13 (15%) underwent redo fundoplication. Fundoplication failure was predicted by long-gap OA RR=3.8 (95%CI=1.1-13), P=0.04. In total GORD associated symptoms persisted in 7 (8%) patients, including one with permanent feeding jejunostomy. Latest endoscopy showed moderate or severe oesophagitis in 7% of fundoplicated and in 3% nonfundoplicated patients and intestinal metaplasia in 3% and 1% (p=0.20-0.29).

CONCLUSION

Fundoplication provided a safe and relatively effective control of OA associated symptomatic GORD and oesophagitis. The failure rate of fundoplication was high in those with long-gap OA.

TYPE OF STUDY

Treatment study.

LEVEL OF EVIDENCE

IV.

How to Care for Patients with EA-TEF: The Known and the Unknown

PURPOSE OF REVIEW

Guidelines were recently published highlighting why esophageal atresia (EA) patients are prone to complication risks, and the need for long-term follow-up. In this review, we will focus on how to investigate and treat potential complications, as well as the pros and cons of different investigative and treatment modalities, and what areas continue to need further research.

RECENT FINDINGS

EA patients are at high risk for gastroesophageal reflux and esophageal strictures, and the sequela that result. Extraintestinal manifestations of gastroesophageal reflux disease (GERD) can appear similar to other pathologic diagnoses commonly found in EA patients, such as congenital stricture, eosinophilic esophagitis, esophageal dysmotility, tracheomalacia, recurrent fistula, aspiration, etc. Therefore, it is important to have a standardized way to monitor for these issues. pH impedance allows for detection of nonacid reflux and the height of reflux, which are important in correlating symptoms with reflux episodes. A multidisciplinary approach is beneficial in evaluating and monitoring EA patients in the long term.

Outcome of primary repair in extremely and very low-birth-weight infants with esophageal atresia/distal tracheoesophageal fistula

PURPOSE

The optimal surgical management of extremely (ELBW) and very low-birth-weight (VLBW) neonates with esophageal atresia and distal tracheoesophageal fistula (EA/TEF) (Gross type C) is still debated. The aim of this study was to evaluate the surgical outcome of primary repair in these patients and compare it to ≥1500g neonates.

METHODS

Medical records of neonates with repaired EA from 2002 to 2016 were reviewed.

RESULTS

4 ELBW, 7 VLBW, and 24 ≥1500g infants had type C EA/TEF and underwent primary repair. Anastomotic leakage occurred in 0% ELBW, 0% VLBW and 8.3% ≥1500g patients and anastomotic stricture in 25% ELBW, 28.5% VLBW and 37.5% ≥1500g patients. 50% ELBW, 14.2% VLBW and 20.8% ≥1500g patients underwent secondary fundoplication. One patient of the VLBW group and one patient of the ≥1500g group died postoperatively of causes not related to EA/TEF.

CONCLUSIONS

In extremely and very low-birth-weight neonates with type C EA/TEF surgical outcome after primary repair is comparable to the outcome in ≥1500g neonates. Primary repair can be performed in most of these patients and staged repair can be restricted to unstable patients.

LEVEL OF EVIDENCE

Treatment study level III.

Esophageal atresia and tracheo-esophageal fistula

Management of esophageal atresia has merged from correction of the anomaly to the complete spectrum of management of esophageal atresia and all its sequelae. It is the purpose of this article to give an overview of all aspects involved in taking care of patients with esophageal atresia between January 2011 and June 2016, as well as the patients who were referred from other centers. Esophageal atresia is a complex anomaly that has many aspects that have to be dealt with and complications to be solved. By centralizing these patients in centers of expertise it is believed that the best care can be given.

Surveillance in Patients With Esophageal Atresia/Tracheoesophageal Fistula

PURPOSE OF REVIEW

Esophageal atresia/tracheoesophageal fistula (EA/TEF) is a congenital aerodigestive anomaly with high survival rates after surgical repair. Care should now be focused on prevention of long-term complications using appropriate surveillance techniques.

RECENT FINDINGS

The incidence of gastroesophageal reflux disease (GERD) is high in patients with EA/TEF. Consequences of untreated GERD include esophagitis, strictures, and Barrett esophagus. Subjective symptoms are an unreliable indicator of presence or severity of GERD, and therefore, diagnostic testing is needed to assess esophageal heath and monitor the effectiveness of anti-reflux treatment. Esophagogastroduodenoscopy with biopsy remains the primary surveillance tool, but is invasive and not without risks. Less-invasive modalities such as multichannel intraluminal impedance and pH monitoring to assess GERD appear to correlate strongly with esophageal histology and may provide sufficient information to guide treatment. EA/TEF patients face numerous challenges that need to be considered. Routine surveillance protocols and close monitoring are warranted to assess complications. Further research is needed to delineate the frequency of esophagogastroduodenoscopy versus less-invasive and promising modalities such as multichannel intraluminal impedance-pH monitoring.

Fundoplication in Patients with Esophageal Atresia: Patient Selection, Indications, and Outcomes

Patients with esophageal atresia (EA) suffer from abnormal and permanent esophageal intrinsic and extrinsic innervation that affects severely esophageal motility. The repair of EA also results in esophageal shortening that affects distal esophageal sphincter mechanism. Consequently, gastroesophageal reflux (GER) is common in these patients, overall approximately half of them suffer from symptomatic reflux. GER in EA patients often resists medical therapy and anti-reflux surgery in the form of fundoplication is required. In patients with pure and long gap EA, the barrier mechanisms against reflux are even more damaged, therefore, most of these patients undergo fundoplication during first year of life. Other indications for anti-reflux surgery include recalcitrant anastomotic stenoses and apparent life-threatening episodes. In short term, fundoplication alleviates symptoms in most patients but recurrences are common occurring in at least one third of the patients. Patients with fundoplication wrap failure often require redo surgery, which may be complicated and associated with significant morbidity. A safe option in a subset of patients with failed anti-reflux surgery appears to be long-term medical treatment with proton pump inhibitors.

The Surgical Correction of Congenital Deformities: The Treatment of Diaphragmatic Hernia, Esophageal Atresia and Small Bowel Atresia

BACKGROUND

More than half of all congenital deformities can be detected in utero. The initial surgical correction is of paramount importance for the achievement of good long-term results with low surgical morbidity and mortality.

METHODS

Selective literature review and expert opinion.

RESULTS

Congenital deformities are rare, and no controlled trials have been performed to determine their optimal treatment. In this article, we present the prenatal assessment, treatment, and long-term results of selected types of congenital deformity. Congenital diaphragmatic hernia (CDH) affects one in 3500 live-born infants, while esophageal atresia affects one in 3000 and small-bowel atresia one in 5000 to 10,000. If a congenital deformity is detected and its prognosis can be reliably inferred from a prenatal assessment, the child should be delivered at a specialized center (level 1 perinatal center). The associated survival rates are 60-80% after treatment for CDH and well over 90% after treatment for esophageal or small-bowel atresia. Despite improvements in surgical correction over the years, complications and comorbidities still affect 20-40% of the treated children. These are not limited to surgical complications in the narrow sense, such as recurrence, postoperative adhesions and obstruction, stenoses, strictures, and recurrent fistulae, but also include pulmonary problems (chronic lung disease, obstructive and restrictive pulmonary dysfunction), gastrointestinal problems (dysphagia, gastro-esophageal reflux, impaired intestinal motility), and failure to thrive. Moreover, the affected children can develop emotional and behavioral disturbances. Minimally invasive surgery in experienced hands yields results as good as those of conventional surgery, as long as proper selection criteria are observed.

CONCLUSION

Congenital deformities should be treated in recognized centers with highly experienced interdisciplinary teams. As no randomized trials of surgery for congenital deformities are available, longitudinal studies and registries will be very important in the future.

Evaluation of the intraoperative risk factors for esophageal anastomotic complications after primary repair of esophageal atresia with tracheoesophageal fistula

PURPOSE

The aim of this study is to identify the risk factors for esophageal anastomotic stricture (EAS) and/or anastomotic leakage (EAL) after primary repair of esophageal atresia with tracheoesophageal fistula (EA/TEF) in infants.

METHODS

A retrospective chart review of 52 patients with congenital EA/TEF between January 2000 and December 2015 was conducted. Univariate and multivariate analyses were performed to identify the risk factors for anastomotic complications.

RESULTS

Twenty-four patients were excluded from the analysis because they had insufficient data, trisomy 18 syndrome, delayed anastomosis, or multi-staged operations; the remaining 28 were included. Twelve patients (42.9 %) had anastomotic complications. EAS occurred in 12 patients (42.9 %), and one of them had EAL (3.57 %). There was no correlation between anastomotic complications and birth weight, gestational weeks, sex, the presence of an associated anomaly, age at the time of repair, gap between the upper pouch and lower pouch of the esophagus, number of sutures, blood loss, and gastroesophageal reflux. Anastomosis under tension and tracheomalacia were identified as risk factors for anastomotic complications (odds ratio 15, 95 % confidence interval (CI) 1.53-390.0 and odds ratio 8, 95 % CI 1.33-71.2, respectively).

CONCLUSION

Surgeons should carefully perform anastomosis under less tension to prevent anastomotic complications in the primary repair of EA/TEF.

Feeding Difficulties in Children with Esophageal Atresia

The current available literature evaluating feeding difficulties in children with esophageal atresia was reviewed. The published literature was searched through PubMed using a pre-defined search strategy. Feeding difficulties are commonly encountered in children and adults with repaired esophageal atresia [EA]. The mechanism for abnormal feeding includes both esophageal and oropharyngeal dysphagia. Esophageal dysphagia is commonly reported in patients with EA and causes include dysmotility, anatomic lesions, esophageal outlet obstruction and esophageal inflammation. Endoscopic evaluation, esophageal manometry and esophograms can be useful studies to evaluate for causes of esophageal dysphagia. Oropharyngeal dysfunction and aspiration are also important mechanisms for feeding difficulties in patients with EA. These patients often present with respiratory symptoms. Videofluoroscopic swallow study, salivagram, fiberoptic endoscopic evaluation of swallowing and high-resolution manometry can all be helpful tools to identify aspiration. Once diagnosed, management goals include reduction of aspiration during swallowing, reducing full column reflux into the oropharynx and continuation of oral feeding to maintain skills. We review specific strategies which can be used to reduce aspiration of gastric contents, including thickening feeds, changing feeding schedule, switching formula, trialing transpyloric feeds and fundoplication.

Gastroesophageal reflux and congenital gastrointestinal malformations

Although the outcome of newborns with surgical congenital diseases (e.g., diaphragmatic hernia; esophageal atresia; omphalocele; gastroschisis) has improved rapidly with recent advances in perinatal intensive care and surgery, infant survivors often require intensive treatment after birth, have prolonged hospitalizations, and, after discharge, may have long-term sequelae including gastro-intestinal comorbidities, above all, gastroesophageal reflux (GER). This condition involves the involuntary retrograde passage of gastric contents into the esophagus, with or without regurgitation or vomiting. It is a well-recognized condition, typical of infants, with an incidence of 85%, which usually resolves after physiological maturation of the lower esophageal sphincter and lengthening of the intra-abdominal esophagus, in the first few months after birth. Although the exact cause of abnormal esophageal function in congenital defects is not clearly understood, it has been hypothesized that common (increased intra-abdominal pressure after closure of the abdominal defect) and/or specific (e.g., motility disturbance of the upper gastrointestinal tract, damage of esophageal peristaltic pump) pathological mechanisms may play a role in the etiology of GER in patients with birth defects. Improvement of knowledge could positively impact the long-term prognosis of patients with surgical congenital diseases. The present manuscript provides a literature review focused on pathological and clinical characteristics of GER in patients who have undergone surgical treatment for congenital abdominal malformations.

Contractile profile of esophageal and gastric fundus strips in experimental doxorubicin-induced esophageal atresia

Esophageal atresia (EA) is characterized by esophageal and gastric motility changes secondary to developmental and postsurgical damage. This study evaluated the in vitro contractile profile of the distal esophagus and gastric fundus in an experimental model of EA induced by doxorubicin (DOXO). Wistar pregnant rats received DOXO 2.2 mg/kg on the 8th and 9th gestational days. On day 21.5, fetuses were collected, sacrificed, and divided into groups: control, DOXO without EA (DOXO-EA), and DOXO with EA (DOXO+EA). Strips from the distal esophagus and gastric fundus were mounted on a wire myograph and isolated organ-bath system, respectively, and subjected to increasing concentrations of carbamylcholine chloride (carbachol, CCh). The isolated esophagus was also stimulated with increasing concentrations of KCl. In esophagus, the concentration-effect curves were reduced in response to CCh in the DOXO+EA and DOXO-EA groups compared to the control group (P<0.05). The maximum effect values (E_max) for DOXO+EA and DOXO-EA were significantly lower than control (P<0.05), but the half-maximal effective concentration (EC₅₀) values were not significantly different when the three groups were compared (P>0.05). In response to KCl, the distal esophagus samples in the three groups were not statistically different with regard to E_max or EC₅₀ values (P>0.05). No significant difference was noted for EC₅₀ or E_max values in fundic strips stimulated with CCh (P>0.05). In conclusion, exposure of dams to DOXO during gestation inhibited the contractile behavior of esophageal strips from offspring in response to CCh but not KCl, regardless of EA induction. The gastric fundus of DOXO-exposed offspring did not have altered contractile responsiveness to cholinergic stimulation.

Esophageal atresia and transitional care--step 1: a systematic review and meta-analysis of the literature to define the prevalence of chronic long-term problems

BACKGROUND

Esophageal atresia (EA) is a rare congenital anomaly with high infantile survival rates. The aim of this study was to outline the prevalence of common long-term problems associated with EA repair in patients older than 10 years of age.

DATA SOURCES

Original papers were identified by systematic searching of MEDLINE and EMBASE databases from January 1993 to July 2014. Fifteen articles (907 EA patients) met inclusion criteria.

CONCLUSIONS

This is the first systematic review aiming to quantify the prevalence of the long-term problems associated with EA. The main active medical conditions (pooled estimated prevalence) identified were the following: dysphagia (50.3%), gastroesophageal reflux disease with (40.2%) or without (56.5%) histological esophagitis, recurrent respiratory tract infections (24.1%), doctor-diagnosed asthma (22.3%), persistent cough (14.6%), and wheeze (34.7%). The prevalence of Barrett's esophagus (6.4%) was 4 and 26 times higher than the adult (1.6%) and pediatric (.25%) general populations. Adult and pediatric practitioners should focus on how to develop effective long-term follow-up and transitional care for these patients.

Measured gap length and outcomes in oesophageal atresia

AIMS

Oesophageal atresia (OA) with or without tracheoesophageal fistula (TOF) is the most common congenital anomaly of the oesophagus. There is limited literature suggesting a linear relationship between increasing gap length and the incidence of all major complications. We sought to assess whether measured gap length at the time of surgery was related to outcomes in our patients.

METHODS

All patients with a diagnosis of OA +/- TOF who underwent repair under a single surgeon between 1983 and 2012 were included. The length between the oesophageal pouches was measured at the time of surgery. Patients were then divided into three groups; short ≤1cm, intermediate >1-≤2cm and long >2-≤5cm. Outcome measures were anastomotic leak, strictures requiring dilatation, gastrooesophageal reflux disease (GORD) and need for fundoplication.

RESULTS

122 patients were included in the study. The outcomes for patients with short (n=53), intermediate (n=51) and long gaps (n=18) were as follows: anastomotic leak - 1.9%, 2%, 5.5% (P=0.66), strictures requiring dilatation - 32%, 33%, 50% (P=0.67), GORD - 51%, 59%, 72% (P=0.58) and need for fundoplication - 11%, 20%, 44% (*P=0.02). There were no deaths related to the repair.

CONCLUSIONS

Measured gap length at the time of surgery did not have a linear relationship with leak or stricture rate. Our experience suggests that when primary repair is possible absolute gap length is irrelevant to the development of post-operative complications. There is however a significant increase in the need for fundoplication in those with a long gap.