A 42-year-old woman with a history of asthma has an attack and is brought to the emergency department for evaluation and treatment. She is wheezing and is short of breath. What is the most likely pathophysiology of this condition?

A 42-year-old woman with a history of asthma has an attack and is brought to the emergency department for evaluation and treatment. She is wheezing and is short of breath. What is the most likely pathophysiology of this condition?

A 39-year-old man with recurrent fungal infections is seen by his primary care physician. Consideration is given to prescribing terbinafine for this patient. Although the medication can be given without regard to meals, a possible problem with this medication can be which of the following?

A 39-year-old man with recurrent migraine headaches presents to his primary care physician for evaluation and treatment. Physical examination of the head and neck is unremarkable. Treatment with zolmitriptan has begun. This agent acts on which of the following receptors in the brain?

A 78-year-old woman with a long history of chronic open-angle glaucoma has failed numerous treatments with oral and topical agents. She has begun on a treatment regimen with an ophthalmic solution of echothiophate. Which of the following effects must the treating physician be aware of?

A 37-year-old female with mild arthritis presents to the clinic for follow-up. She states that she is doing much better because of doubling her dose of ibuprofen. Some days, she even triples her dose throughout the day. The physician warns the patient about peptic ulcers and bleeding from taking too much ibuprofen. She is offered alternatives, but the patient refuses because the ibuprofen works so well. What is the most appropriate therapy for this patient to prevent peptic ulcers?