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
Seek emergency help for:
Bleeding from the catheter site that does not stop with firm pressure
Sudden weakness, facial drooping, difficulty speaking, or confusion
Severe chest pain or difficulty breathing
Fainting or signs of a severe allergic reaction
A suddenly cold, pale, severely painful, or numb arm or leg
A seizure or sudden severe headache after brain-related treatment
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
Contact your healthcare team promptly for worsening pain, repeated vomiting, a persistent fever, increasing redness or drainage at the puncture site, or new swelling.
Also call if the treated arm or leg becomes increasingly painful, numb, pale, or cool.
3
Does any of this apply?
Book an appointment
A small bruise at the entry site and mild tenderness can be part of routine recovery.
Mention symptoms that are not improving at your planned follow-up.
The article also says
Your discharge instructions may list additional warning signs specific to the area treated.
Every sign above is quoted from the sofidex article on Endovascular embolization. If you are not sure, err upward — it is always reasonable to be checked.