Poenaru et al modified the Waterston classification in neonates with esophageal atresia. It is a simple scheme that can stratify patients by risk. The authors are from Montreal Children's Hospital.
Patient selection: neonates with esophageal atresia with or without a tracheoesophageal fistula
Parameters:
(1) mechanical ventilator dependent
(2) severity of associated anomalies
Mechanical Dependent
Associated Anomalies
Prognostic Class
no
none or minor
I
no
major
I
no
life-threatening
II
yes
none or minor
I
yes
major
II
yes
life-threatening
II
Prognostic Class
Mortality Rate (1993)
I
7%
II
69%
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