Question for nurses or doctors that work in hospitals or surgery centers?

Ok my cousin has a question. Hi if someone wets the bed before the surgery like when there getting the iv qnd stuff are the nurses required to put the kid in a diaper even if there like 14 and usually don’t wet themselves. If its not required do u usually do it anyways. Also wat surgerys are you required to wear a diaper when your at the hospital getting the surgery and or/ at home when your recovering.thanks