You find a vein on a patients arm; the vein can see and felt. The vein curves/angles, a lot. is it OK to insert the needle at the same angle that the vein is angled at, while inserting the IV?Yesterday, I had a 25 year old patient with a vein the size of a earthworm, but it seemed to practically spiral up his arm instead of a linear line towards the heart. I inserted the IV at a slight angle, because I felt that had I went "straight", I would have infiltrated it. It was still aimed towards the heart, just at a slight angle. Is this appropriate? A nurse that I worked with said, no...IV's should always be inserted linear.