Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
Call emergency services for severe breathing difficulty, blue or grey lips or skin, collapse, unresponsiveness, or choking that does not clear.
After discharge, contact the surgical or pediatric team promptly for fever, increasing wound redness or drainage, repeated vomiting, worsening feeding, fewer wet diapers, new noisy breathing, or repeated coughing and choking during feeds.
Seek urgent same-day advice if food or liquid seems stuck, your baby cannot manage saliva, breathing is harder than usual, or a feeding tube moves or comes out.
Do not push a displaced tube back through the repaired esophagus unless the treating team has specifically taught you to do so.
Questions about reflux, feeding pace, weight gain, medications, and planned tests can usually be handled through routine follow-up unless symptoms suddenly worsen.
Every sign above is quoted from the sofidex article on Tracheoesophageal fistula and esophageal atresia repair. If you are not sure, err upward — it is always reasonable to be checked.