Just remember that the catheter goes straight into the right atrium of your heart and any infection could be be very very serious indeed.
Paddbear, there is a temptation there to stick with the catheter, but people die from infections from catheters, Grafts and fistulas are much much healthier.
What is the difference between a graft and a fistula? Which hurts less?Will somebody explain needle gauge? I inject insulin daily with a 31 gague. That's little, huh?
And in case of an infection you already have another access for emergencies.