I have just been on placement at obstetric and gynae theatres......a spinal does take about 10-15mins to set up and wait for it to work etc, but you will be awake so obviously better for you.....general is quicker to give and works instantly. Depends if you want to be awake during the procedure and be able to hear and potentially see what is going on.
BOTH spinal and general can affect the bladder, in my experience more so after a general anaesthetic, its just the effect of anaesthetic and things poking and proding your bladder area, some patients can go into fluid retention, small percentage require a catheter which can cause you to be kept in overnight but again in my experience its mostly men this happens to for some reason!
Also, depends if you want a big needle going into your spinal area, I personally would rather have a general because of problems I had when Amy was trying to come into the world, involved needles in my spine.
hope that helps a bit
Poll xxx