Pain Medication

From your perspective as Ripley’s psychiatric nurse practitioner, answer the following questions in a paper no longer than two double-spaced pages (not including the reference page) and in APA format. Include at least three peer-reviewed, evidence-based references.

What assessment questions should you ask Ripley?
When you ask about his back pain, Ripley replies that he is willing to talk about it but doesn’t see how it’s relevant to the depression he came in for. How do you respond to Ripley?
You decide that a trial of a different antidepressant is indicated. Which would be the best choice? Why?
Ripley mentions that, to help him sleep, he had taken diazepam that his wife had been prescribed during her terminal illness. He asked his PCP to prescribe diazepam for him, but she was hesitant and suggested he discuss this with you. How should you proceed?
You consider prescribing pain medication. Select a pain medication appropriate for Ripley. What is the mechanism of action of this medication? How does it relieve pain (that is, how does it interact with the function and structure of the nervous system relative to pain)?
Select a controlled pain medication appropriate for Ripley (it can be the same as you chose in the prior question). Explain the FDA regulations and legal ramifications of prescribing this controlled pain medication for Ripley.