Evaluation of Gastroesophageal Reflux in Children Born With Esophageal Atresia Using pH and Impedance Monitoring.

OBJECTIVES: The aim of the study was to evaluate acid and nonacid gastroesophageal reflux in infants and school-aged children with esophageal atresia (EA) using pH-impedance (pH-MII) monitoring. METHODS: Between 2012 and 2017, all 24-hour pH-MII studies performed in infants (≤18 months) and 8-year olds with EA were included. Antiacid therapy was discontinued before study. Exclusion criteria were: isolated tracheoesophageal fistula; esophageal replacement therapy; tube feeding; and monitoring <18 hours. Automatically detected retrograde bolus movements (RBM) were manually reviewed and modified/deleted if necessary. RESULTS: We included 57 children (51% boys; 2% isolated EA; 44% thoracoscopic EA repair): 24 infants (median age 0.6 years) and 33 school-aged children (median age 8.2 years). Of the automatically detected 3313 RBM, 1292 were manually deleted from the tracings: 52% of nonacid RBM and 8% of acid RBM (mainly misinterpreted swallows or 1 event recognized as several events). In infants, median reflux index (RI; pH <4) was 2.6% (abnormal in n = 2), median RBM was 61 (62% nonacid, 58% mixed), and median of the mean BCT was 11 seconds. In older children, median RI was 0.3% (abnormal in n = 4), median RBM was 21 (64% nonacid; 75% mixed), and median of the mean BCT was 13 seconds. CONCLUSIONS: Most children with EA off medication have a normal RI, yet experience a significant number of nonacid RBM. After manual revision of the tracings, a high percentage of RBM was deleted. Our data show that automated impedance analysis software needs refinement for use in infants and children with EA and question the need for standard antiacid therapy in these patients.

High Prevalence of Barrett's Esophagus and Esophageal Squamous Cell Carcinoma After Repair of Esophageal Atresia.

BACKGROUND & AIMS: Esophageal atresia is rare, but improved surgical and intensive care techniques have increased rates of survival in children, so there are now many adults with this disorder. Many patients with esophageal atresia develop gastroesophageal reflux (GER), raising concerns about increased risk of Barrett's esophagus (BE; prevalence of 1.3%-1.6% in general population) and esophageal carcinoma. We assessed the prevalence of BE and esophageal carcinoma in this population. METHODS: We performed a prospective study of 289 patients with esophageal atresia at the Department of Gastroenterology and Hepatology at Erasmus MC University Medical Center in The Netherlands, from May 2012 through March 2017. A total of 151 (median age, 25.4 y; age range, 16.8-68.6 y) underwent upper endoscopies as part of a surveillance program for (pre)malignant esophageal lesions. Biopsies were collected and analyzed by histology. We collected data on patients' use of medications, tobacco, and alcohol; gastrointestinal symptoms; ability to swallow; complaints of GER; and type of atresia and surgeries. Prevalence of esophageal squamous cell carcinoma (ESCC) was determined using data from The Netherlands Cancer Registry. The number of persons alive on January 1, 2016, in the esophageal atresia cohort and in the general Dutch population were used to calculate the 10-year prevalence of ESCC per 100,000 persons in both populations. RESULTS: Forty-seven percent of patients with esophageal atresia had a history of GER and 20.5% had undergone fundoplication surgery. Endoscopy revealed normal esophagus in 68.2% of patients, esophagitis in 7.3%, and columnar-lined esophagus in 24.5%. Histology revealed normal mucosa in 50.3% of patients, esophagitis in 23.2%, gastric metaplasia in 17.2%, and BE in 6.6% (at a median age of 31.6 years). A history of fundoplication surgery was associated with BE (P = .03). Three ESCCs developed, in 2 men, at ages 42, 44, and 60 years. This corresponded to a prevalence of 0.7% in patients with esophageal atresia-a value 108-fold higher than in the same age group in the general population. CONCLUSIONS: The prevalence of BE is 4-fold higher in young adults with esophageal atresia, and the prevalence of ESCC is 108-fold higher than in the general population. This finding could have important implications for transition of young adults from pediatric care to adult gastroenterology departments to receive life-long endoscopic follow-up evaluation to facilitate early diagnosis of relevant lesions.

Risk factors for refractory anastomotic strictures after oesophageal atresia repair: a multicentre study.

OBJECTIVE: To determine the incidence of refractory anastomotic strictures after oesophageal atresia (OA) repair and to identify risk factors associated with refractory strictures. METHODS: Retrospective national multicentre study in patients with OA born between 1999 and 2013. Exclusion criteria were isolated fistula, inability to obtain oesophageal continuity, death prior to discharge and follow-up <6 months. A refractory oesophageal stricture was defined as an anastomotic stricture requiring ≥5 dilations at maximally 4-week intervals. Risk factors for development of refractory anastomotic strictures after OA repair were identified with multivariable logistic regression analysis. RESULTS: We included 454 children (61% male, 7% isolated OA (Gross type A)). End-to-end anastomosis was performed in 436 (96%) children. Anastomotic leakage occurred in 13%. Fifty-eight per cent of children with an end-to-end anastomosis developed an anastomotic stricture, requiring a median of 3 (range 1-34) dilations. Refractory strictures were found in 32/436 (7%) children and required a median of 10 (range 5-34) dilations. Isolated OA (OR 5.7; p=0.012), anastomotic leakage (OR 5.0; p=0.001) and the need for oesophageal dilation ≤28 days after anastomosis (OR 15.9; p<0.001) were risk factors for development of a refractory stricture. CONCLUSIONS: The incidence of refractory strictures of the end-to-end anastomosis in children treated for OA was 7%. Risk factors were isolated OA, anastomotic leakage and the need for oesophageal dilation less than 1 month after OA repair.

Longitudinal evaluation of growth in oesophageal atresia patients up to 12†years.

OBJECTIVE: Previous studies reported diminished growth after oesophageal atresia (OA) repair. We evaluated long-term follow-up data on growth. METHODS: Longitudinal cohort study up to 12 years. Patients with OA, born 1999-2013, who participated in a longitudinal follow-up programme were included. Children with genetic syndromes associated with growth disorders were excluded. SD scores (SDS) for height-for-age (HFA), weight-for-height (WFH) and distance-to-target-height were calculated for routine visits (0.5/1/2/5/8/12 years). Linear mixed models were used to estimate SDS until 12 years of age and to evaluate explanatory factors for growth. RESULTS: We included 126/155 children (32% prematurely born, 20% small for gestational age), 32 reached the age of 12 years. Fundoplication surgery was performed in 24%. SDS-HFA was below normal up to 8 years but improved over these years (mean (SE) -0.48 (0.09), -0.31 (0.09) and -0.20 (0.13) at 0.5, 8 and 12 years). Scores improved after correction for target height (mean (SE) -0.29 (0.10), -0.17 (0.09) and -0.10 (0.14) at 0.5, 8 and 12 years). SDS-WFH was below normal from age 1-5 years (mean (SE) -0.53 (0.09), -0.24 (0.09) and 0.03 (0.14) at 1, 5 and 12 years). Low birth weight and fundoplication surgery were negatively associated with growth. CONCLUSIONS: The growth of patients with OA was below the reference norm during the first years of life, but normalised at 12 years. Large longitudinal cohort studies should evaluate if normal growth persists into adolescence. Early nutritional assessment with timely dietary intervention should be considered especially in those with low birth weight or following fundoplication surgery.