Are children kept awake for a catheterization to check the status of a urinary tract infection?

Avoid by catheter. Best to avoid unnecessary catheterizations. In first place urine specimen can be obtained by clean void, if child old enough to provide or by bag specimen i tot toilet trained. This is perfectly reliable if urine is infection free. Only need to be catheterized if "clean catch/bag urine is positive. Then urine is obtained when awake if catheterization is required.
Yes. . Urinary catherization is usually perirmed without sedation.
Yes. Yes they are...It is not worth the risk of sedating a child to do a catheterization especially since it is very very fast in most cases.