Problem: Ms. Cruz has myasthenia gravis and will be switching from neostigmine to pyridostigmine to help with compliance. She is concerned about missing doses and taking the medication correctly.
a. What are some dosing concerns with pyridostigmine, and what are the key teaching points?
b. Ms. Cruz is scheduled for a follow-up diagnostic exam using edrophonium. Explain how edrophonium is used in diagnosing myasthenia gravis.