After surgery, a nurse watches you until you wake up. You'll have a tube in your back to drain fluid from your wound. Another one, called an IV, will be in your arm. It delivers pain medicine, fluids, and antibiotics. And a tube called a catheter connects to where urine normally leaves your body, so you don't have to walk to the bathroom. Stockings or electronic wraps squeeze your calves to move blood so you don't get blood clots.