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
Call emergency services for:
Severe trouble breathing, especially at rest
Blue or grey lips or skin
Collapse, unresponsiveness, or difficulty waking
Chest pain with fainting or severe breathlessness
A baby with blue or grey colouring, marked breathing difficulty, unusual sleepiness, or an inability to feed needs emergency assessment.
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 prompt medical advice for new fainting, worsening breathlessness, reduced exercise ability, chest discomfort during activity, or repeated episodes of a fast or irregular heartbeat.
New ankle or abdominal swelling also needs assessment.
3
Does any of this apply?
Book an appointment
Arrange routine follow-up if symptoms are gradually changing, a planned heart review is overdue, or you are considering pregnancy or high-intensity sport.
Routine appointments are important even when you feel well because valve changes may not cause early symptoms.
Every sign above is quoted from the sofidex article on Pulmonic valve stenosis. If you are not sure, err upward — it is always reasonable to be checked.