Hey, I’m having Dr Mounir and I asked what drains were before I’d decided if I was having unders/overs and he said it was surgeon preference and no he never uses them. So I think it’s just up to them and what they feel is best, I have seen a post on here of someone who had to go back in and be drained as there was a fluid build up but I think that is rare and just a minor complication with her. Best to ask your surgeon in consultation, or contact nurse to ask if you’ve already seen your surgeon. Xx