Gastroesophageal reflux in infants: when to get help
Go through these in order and stop at the first one that applies. If you are reading this for someone else, answer for them.
1
Is any of this happening now?
Call 911
It requires immediate medical assessment.
Call emergency services if the baby has serious difficulty breathing, turns blue or grey, becomes unresponsive, or has a seizure.
Other emergency signs, for anyone
Someone who is struggling to breathe, gasping, choking, or cannot get words out
Someone who has chest pain, tightness or pressure lasting more than a few minutes
Someone who has sudden weakness or drooping on one side of the face or body, slurred speech, or sudden confusion
Someone who is unconscious, or cannot be woken
Someone who is bleeding heavily and it will not stop with firm pressure
Someone who has had a seizure that will not stop, or does not wake up afterwards
Someone who has lips or skin that look pale, blue, grey or blotchy
Someone who you believe has taken an overdose or swallowed something poisonous
2
Is any of this happening?
Be seen today
Seek urgent medical care if vomiting becomes repeatedly forceful or projectile, particularly in a young infant.
This can indicate pyloric stenosis or another blockage.
Get urgent help if there is blood in the vomit, the abdomen is swollen or tender, or the baby is unusually sleepy, difficult to wake, feverish, or unable to keep feeds down.
Signs of dehydration include far fewer wet diapers, a dry mouth, no tears when crying, or a sunken soft spot on the head.
3
Does any of this apply?
Book an appointment
Arrange a routine medical appointment if the baby:
Regularly refuses feeds or seems distressed while feeding
Is not gaining weight as expected
Coughs, chokes, or has noisy breathing during feeds
Has persistent diarrhea, eczema, or blood-streaked stool
Develops reflux for the first time later in infancy
Continues to have frequent troublesome symptoms into the second year
The article also says
Green vomit may contain bile and can indicate an intestinal blockage.
Every sign above is quoted from the sofidex article on Gastroesophageal reflux in infants. If you are not sure, err upward — it is always reasonable to be checked.