Which of these statements best describes the concept of half-life?

Which of these findings would cause the nurse to hold the administration of oral metoprolol 25 mg?

The nurse is obtaining a history from a client who discloses daily use of St. John's Wort in addition to prescription drugs. Which effect of this dietary supplement would most concern the nurse?

A client taking warfarin presents with bruises, dark tarry stools, and an international normalized ratio (INR) of 4.3. What is the nurse's action?

A client is taking a drug that has potential toxic side effects. What will the nurse do?

The nurse is providing client education for a postmenopausal client; which risks associated with estrogen/progestin therapy should the nurse discuss with the client? (Select all that apply.)

A client who reports routine consumption of more than three alcoholic beverages per day asks about taking acetaminophen when needed for occasional recurrent pain. What will the nurse tell the client?

A client who is suffering from an acute gout attack wants to know how colchicine differs from probenecid and allopurinol in its actions. Which of these statements shows the need for further teaching regarding the purpose and use of these medications?

What should the nurse include in a client's discharge teaching when going home with a prescription for digoxin 0.125 mg by mouth once daily?

A client with bronchitis is taking trimethoprim/sulfamethoxazole 160/800 mg orally, twice daily. Before administering the third dose, the nurse observes the client has a widespread rash, a temperature of 103°F, and a heart rate of 100 beats/min. The client looks ill and reports not feeling well. What is the nurse's response?

A client with a new diagnosis of atrial fibrillation is receiving a continuous infusion of heparin. Which finding will the nurse report immediately?