Common response: Newborns depend on small nasal passages for breathing.To mouth breathe they must tilt their head back (uncomfortable) until their neck grows longer, about 6m.Nasal wash out to thin the mucous & remove irritants is the standard treatment for congestion.Effective nasal wash out will often trigger babies protective gag reflex or sneezing & that movement of the saline to & fro helps wash out irritants.
Answered 10/3/2016
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