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Unfortunately, it will hurt because they'll use a staple remover to extract them, I seriously advise to take your pain relief, if you are allowed/are prescribed any before you get there to get them removed, as this will lessen the feelings of tightness around the staples when they're being removed.
But the nurse will be very good to put you at ease before they start, and if you feel any pain at all then ask them to stop for a while.
I hope this isn't too alarming for you, vodka, but I felt that you should be aware of the procedure.
I'll have everything crossed for you for next Thursday. :-))