[Solved] Mildly Disrespectful Towards Patients

You are a hospital administrator and nurse supervisor.  One of your nurses is vaguely/mildly disrespectful towards patients on a regular basis (troublesome behavior, inadequate social skills, bedside manner) even after you have discussed this issue with the nurse multiple times.  The nurse is otherwise adequate with respect to performance. 

Can you fire this person?  How? Why?