Original Article Diagnosis and Management of Post-Operative Complications in Esophageal Atresia Patients in China: a Retrospective Analysis from a Single Institution

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Original Article Diagnosis and Management of Post-Operative Complications in Esophageal Atresia Patients in China: a Retrospective Analysis from a Single Institution Int J Clin Exp Med 2018;11(1):254-261 www.ijcem.com /ISSN:1940-5901/IJCEM0059994 Original Article Diagnosis and management of post-operative complications in esophageal atresia patients in China: a retrospective analysis from a single institution Haitao Zhu*, Min Wang*, Shan Zheng, Kuiran Dong, Xianmin Xiao, Chun Shen Department of Pediatric Surgery, Children’s Hospital of Fudan University, Shanghai, P.R. China. *Equal contribu- tors. Received June 21, 2017; Accepted December 2, 2017; Epub January 15, 2018; Published January 30, 2018 Abstract: Post-operative complications (PCs) remain a common morbidity of esophageal atresia (EA) repairs. Ac- curate diagnosis and appropriate treatments for these PCs remain a great challenge for pediatric surgeons. All EA patients admitted to our institution from 2010 to 2016 were retrospectively reviewed. Demographics, types of PCs, PC diagnosis, treatments, and follow-ups were recorded. Totally 157 of 172 patients with EA underwent primary repairs. PCs occurred in 65 patients (41.4%). Based on univariate analysis, the Gross classification sig- nificantly influenced the incidence of PCs (P < 0.01). The most frequent PCs were anastomotic strictures (23.7%), anastomotic leakages (11.1%), gastroesophageal reflux (5.9%), and recurrent tracheoesophageal fistulas (5.2%). Anastomotic strictures and leakages were confirmed by esophagography. Gastroesophageal reflux and recurrent tracheoesophageal fistulas were demonstrated with radionuclide scintigraphy and esophagoscopy, respectively. All of the patients with anastomotic strictures underwent esophageal dilatation. Conservative treatments were successfully performed in all of the patients with anastomotic leakages. Anti-reflux medications were prescribed to all of the patients with gastroesophageal reflux. All of the patients with recurrent tracheoesophageal fistulas -un derwent re-operations. In conclusion, Anastomotic strictures and leakages, gastroesophageal reflux, and recurrent tracheoesophageal fistulas are the most common PCs in patients undergoing EA repairs. Esophagography is the best option for diagnosing anastomotic strictures and leakages. Diagnosis of gastroesophageal reflux and recurrent tracheoesophageal fistulas requires radionuclide scintigraphy and esophagoscopy. Recurrent tracheoesophageal fistula is an indication for re-operation. Surgical outcomes are favorable in EA patients with PCs. Keywords: Esophageal atresia, post-operative complications, esophagoscopy, esophageal dilation, re-operation Introduction cheoesophageal fistulas (RTEFs), and gastro- esophageal reflux (GER). Accurate diagnosis Esophageal atresia (EA) with or without a tra- and appropriate treatments for these PCs cheoesophageal fistula (TEF) is the most fre- remain a great challenge for pediatric sur- quent congenital malformation of the esopha- geons. gus, with a prevalence ranging from 1 to 1.8 per 4500 live births [1, 2]. An increased num- In the current study, we retrospectively review- ber of neonates with EA have undergone suc- ed our experience on the diagnosis and man- cessful surgical repairs during the past 3 de- agement of the most frequent PCs in EA pa- cades. The prognosis of EA has improved fr- tients, as well as the outcomes and potential om remarkable advances in both neonatal causative factors associated with PCs in our management and surgical care, and the surviv- institution from 2010 to 2016. al rate is currently > 90% [3]. However, post- Materials and methods operative complications (PCs) remain a com- mon morbidity in EA patients after esophageal Patient population repair [3, 4]. Post-operative morbidity mainly depends on the incidence of anastomotic le- Approval was obtained from our Hospital In- akages (ALs) and strictures (ASs), recurrent tra- stitutional Review Board prior to the initiation of Post-operative complications in esophageal atresia patients Table 1. Clinical features of esophageal atre- 1640-4260 g (mean, 2852 ± 515 g). The types sia patients who underwent primary esopha- of EA were classified according to the Gross geal repair classification [1], as follows: A (n = 9 [5.7%]); C No. % (n = 139 [88.5%]); D (n = 2 [1.3%]); and E (n = 7 [4.5%]). EA-associated anomalies were diag- Sex Male 89 57% nosed in 81 neonates (51.6%) and included Female 68 43% congenital heart diseases, anorectal malfor- Gestational age 0-36 weeks 33 21% mations, urogenital anomalies, and anomalies 37-40 weeks 99 63% of limbs or vertebrae (Table 2); 70 neonates > 40 weeks 25 16% (86.4%) had 1 or 2 associated defects and 11 Birth weight 1500-2499 g 41 26% (13.6%) had > 3 associated malformations. 2500-4000 g 105 67% > 4000 g 11 7% Primary esophageal surgical procedure in EA patients Classification Gross A 9 5.7% Gross C 139 88.5% 157 of 172 neonates with EA underwent sur- Gross D 2 1.3% gery by the same pediatric surgeon at our in- Gross E 7 4.5% stitution. The surgical procedures and appro- aches depended on the types of EA (Table 3). Patients with type A EAs underwent staged this study. A single institution retrospective surgery, while a one-stage esophageal anasto- review was performed on 172 EA neonates mosis with or without TEF ligation was per- with or without a TEF between January 2010 formed for all of the other Gross types. The and December 2016. The medical record, in- surgical methods were as follows: thoracoto- cluding demographics, Gross classification of mies, n = 88 (56.0%); cervical, n = 6 (3.8%); EA, operative details, type of PCs, PC diagnos- thoracoscopies, n = 59 (37.6%); and combina- is and therapy, and prognosis, of each patient tion open thoracotomies and cervical, n = 2 was reviewed. Follow-up information was col- (1.3%). Two neonates (1.3%) required conver- lected from outpatient and inpatient records sions from thoracoscopy-to-thoracotomy due with telephone communications or question- to severe bleeding. Thirteen neonates with naires. EAs died after the primary surgical procedure; Statistical analysis the early post-operative survival rate in EA patients was 91.7%. The causes of death we- Data analysis was performed using SPSS re respiratory distress, heart failure, severe version 20.0 statistical software (SPSS, Inc., sepsis, and treatment abandonment in 3, 2, Chicago, IL, USA). The parametric data are 1, and 7 patients, respectively. reported as percentages. The non-parametric continuous data are expressed as the mean PCs and risk factors ± SD. The differences between the non-para- PCs were observed in 65 operative cases metric unpaired continuous data were analyz- (41.4%; Table 4). The most common PC was ed using a chi-square or Fischer’s exact test. ASs (21.7%), followed by ALs (10.2%), GER A p-value < 0.05 was considered statistically (5.1%), and RTEFs (4.5%). Among the neona- significant. tes with PCs, 56 had only 1 PC, whereas 9 Results patients had 2 PCs. Univariate and multivariate analyses with a logistic regression model we- Patient demographics re applied to investigate risk factors for PC occurrence and the results are summarized One hundred seventy-two EA patients with or and shown in Table 5. Based on univariate without a TEF were identified from January analysis, demographic variables, such as gen- 2010 to December 2016. Primary surgery was der, birth weight, gestational age, operation performed on 157 EA patients (Table 1). The methods, operation staging, and associated male-to-female ratio was 1.3:1. The gestatio- anomalies had no significant association with nal age ranged from 34 to 43 weeks (mean, the incidence of PCs (P > 0.05); however, the 38 ± 2 weeks). The birth weights ranged from Gross classification significantly influenced the 255 Int J Clin Exp Med 2018;11(1):254-261 Post-operative complications in esophageal atresia patients Table 2. Malformations associated with esopha- gography with barium or omnipaque (Figures geal atresia 1 and 2). Regular endoscopic esophageal No. (%) bougie or balloon dilatation was performed Congenital heart disease 63 (77.8%) in all AS patients once every 1-3 months Figure 1C 1D Patent ductus arteriosus 47 ( , ). The number of times eso- phageal dilatation was required in AS pati- Atrial septal defect 25 ents ranged from 1 to 10 (mean, 2.8 ± 2.2). Ventricular septal defect 15 The duration of dilatation treatments rang- Anomalous pulmonary venous connection 1 ed from 1 to 24 months (mean, 6.5 ± 5.4 Cor triatriatum 1 months). After endoscopic dilation, symptoms Right aortic arch 1 were relieved in all AS patients. Furthermore, Dextrocardia 1 all ALs were resolved with conservative tr- Coarctation of the aorta 1 eatment, including total parenteral nutritio- Anorectal malformation 12 (14.8%) nal support, trans-anastomotic feeding by Rectoperinaeal fistula 5 nasogastric tube, use of broad-spectrum an- Recto-urethral bulbar fistula 2 tibiotics, and chest tube drainage. The leng- Rectovestibular fistula 5 th of spontaneous healing of leaks ranged from 7 to 51 days (mean, 31.1 ± 16.3 days). Urogenital anomaly 8 (9.9%) The average length of chest tube drainage Hypospadias 4 and post-operative hospital stay were 12.3 ± Cryptorchidism 1 6.7 days (range, 5-26 days) and 31.1 ± 16.3 Hydronephrosis 1 days (range, 11-78 days). Horseshoe kidney 1 Renal ectopia 1 Post-operative GER Anomaly of limbs or vertebrae 10 (12.3%) Eight patients had post-operative GER, whi- Polydactyly 7 ch were diagnosed with contrast esophagog- Anomaly of rib cage 1 raphy and 24-hour esophageal pH monitor- Anomaly of thoracic vertebra 3 ing or radionuclide scintigraphy. The severity Gastrointestinal malformation 3 (3.7%) of GER in EA patients was assessed with Annular pancreas 1 the Boix-Ochoa score according to the crite- Esophageal duplication cyst 1 ria developed by the Group of Digestive Hiatal hernia 1 Diseases Branch of Pediatrics of the Chine- Others 4 (4.9%) se Medical Association [5]. Three GER pa- Laryngeal cleft 1 tients (37.5%) had mild reflux (mean Boix- Ear neoplasm 2 Ochoa score, 15.1 ± 3.7), and moderate re- Cleft palate 1 flux existed in 5 GER patients (62.5%; mean Boix-Ochoa score, 27.3 ± 4.1).
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