Andrew is a 27-year-old landscaper who was building a landscaping wall yesterday. His job requires lifting, bending, and twisting. On arising today, he stated that his back hurts and he cannot move...

Andrew is a 27-year-old landscaper who was building a landscaping wall yesterday. His job requires lifting, bending, and twisting. On arising today, he stated that his back hurts and he cannot move from side to side. The nurse has performed a physical assessment on Andrew, which revealed tightened muscles in the lumbosacral region and limited mobility. The patient describes his pain as a level 7 on a scale of 1 to 10.

1. What are the etiology and pathophysiology of Andrew’s muscle spasms? What are other possible causes of muscle spasms?

2. Andrew has been prescribed cyclobenzaprine (Flexeril) to relieve his back spasms. What is the action of this medication and why has it been prescribed?

3. What should Andrew be instructed regarding the administration of this medication?