Do i need a urinary catheter inserted for breast reduction surgery?

Maybe: The need for a catheter depends mainly on the length of the surgery. If you need one it can be put in after you are asleep and removed before you wake up. Ask your surgeon.

Yes and No: In most instances, a catheter is not used but this will depend on the length of the procedure and re necessity of monitoring urine output.

Depends...: This will likely vary from one practice to another; much will depend on the anticipated duration of surgery. For a precise answer relevant to your case, best ask your plastic surgeon. Best wishes.

Up to surgeon: The general rule is that a catheter is not necessary if the surgery is less than 3 hours. If your surgeon decides that you do not need one, s/he will have you empty your bladder before entering the operating room.