Elsevier

Surgery

Volume 145, Issue 6, June 2009, Pages 675-681
Surgery

Original Communication
Esophageal atresia: Prognostic classification revisited

https://doi.org/10.1016/j.surg.2009.01.017Get rights and content

Background

Although the Spitz classification is the most widely used prognostic classification for esophageal atresia and/or tracheoesophageal fistula (EA), its discrimination ability remains unclear. We sought to develop a more accurate prognostic classification for EA.

Methods

The records of 121 consecutive infants with EA (1980–2005) were reviewed. The independent variables included 6 clinical characteristics, and the dependent variables were survival and mortality. Stepwise logistic regression analysis was used to construct models predicting mortality and create a revised prognostic classification. The discrimination abilities of the revised classification and the Spitz classification were compared using receiver-operating characteristic (ROC) curves.

Results

Birth weight and the presence of major cardiac anomalies were significant prognostic factors for mortality, and major cardiac anomalies affected mortality more than birth weight. The ROC curve for birth weight suggested that 2,000 g was an appropriate cutoff point. The Spitz classification was revised as follows: the revised class I (low-risk group) consisted of patients without major cardiac anomalies and birth weight >2,000 g; class II (moderate-risk group) consisted of patients without major cardiac abnormalities and birth weight <2,000 g; class III (relatively high-risk group) consisted of patients with major cardiac anomalies and birth weight >2,000 g; and class IV (high-risk group) consisted of patients with major cardiac anomalies and birth weight <2,000 g. The ROC comparisons showed that the revised classification provided a significant improvement (P = .049).

Conclusion

This revised classification can improve the stratification of EA patients and be a useful predictor of survival.

Section snippets

Patients and methods

The study involved 121 consecutive EA patients treated at Kobe Children's Hospital between January 1980 and December 2005. This study was done with the approval of the institutional review board (registered no. R20-3). The data collected included the anatomic type of EA, operative interventions, gestational week, weight at birth, presence of major cardiac anomalies, presence of associated anomalies other than cardiac anomalies, presence of chromosomal abnormalities, and patient outcomes. Major

Results

A total of 121 infants with EA were admitted to our institute over the 26-year period. Anatomic variations of total cases were as follows: EA + distal tracheoesophageal atresia (TEF), 101 (84%); EA + proximal TEF, 1 (1%); EA + distal and proximal TEF, 1 (1%); pure EA, 15 (12%); and H-type EA, 3 (3%). Among the 121 infants, there were 67 males and 54 were females. Average of birth weight of all cases was 2,330 ± 660 g, and the average gestational week was 37 ± 3 weeks. Spitz classification were

Discussion

In 1962, Waterston et al1 proposed a prognostic classification of EA, which was based on birth weight, pneumonia, and associated congenital anomalies. One of the important points of its classification was respiratory state of EA neonate. In response to advances in neonatal care, Poenaru et al12 suggested that only severe pulmonary dysfunction requiring mechanical ventilation remained a prognostic risk factor in their series, and proposed a new classification based on preoperative ventilator

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