Hi OP, I had a fall on the night of Feb 2nd, breaking my right wrist and hip, for which I was given a total hip replacement the following afternoon.
I opted for a spinal block without sedation, same as I had when I had surgery on a broken ankle 17 years ago. I've never had a GA and would always prefer to avoid one if possible. I had planned to listen to music, as I'd done with my ankle surgery, but as it happened, the block reached my arm and hand on my hip side so made it impossible. A theatre nurse offered to help but I decided not to bother, so just lay on my side, relaxed and let the team get on with it.
The block does reach quite high so it does feel like you are breathing quite shallowly. I was given an oxygen mask, which I kept pulling away from my face as I hate anything over my face. Ultimately, your oxygen levels are being monitored anyway (obviously), so you're not going to suffocate, even if it feels like you are.
Being unable to completely move one leg and barely move the other can obviously be a bit unnnerving, so you do have to keep calm, accept it, and just put your trust in the surgical team. I found that my lower half felt - to my left hand when I felt afterwards - like leather covered blancmange. 😅 Very weird.
The block can make your blood pressure drop, which can cause nausea, this happened both times to me. I just told the team and something to stop it was put into my line, which eased it within seconds.
Being sedation free meant of course that I was aware of everything, including the smell of burning flesh as they were drilling down into my thigh bone to put the rod thingy down there, as well as what felt like having a hammer and chisel knocking into my thigh - my whole side was jiggling about 😅.
Having this experience without sedation is not an experience for everyone. Like I said, you do have to keep a calm head, just accept what is happening, and trust the team to get on with it. I think I'm just a control freak who would rather be fully awake during surgery, so long as I don't feel any pain.
At the end of the day, if a patient starts to become distressed, panicky etc. the anaesthesia team will put some sedation into the line anyway to send them off to Happy Land. 🙂 Can't have a patient crying and thrashing about on the operating table!
I'm glad I opted to be sedation free, it was interesting observing (discreetly) all the activity in the recovery area. I had to spend quite a while in there as my blood pressure was still quite low. It tends to be anyway, though.
Anyway, that was my experience. You'll have a chance to speak with the anaesthetist to help make your decision. Best of luck with your surgery, and whichever anaesthesia you opt for. 👍