L. W. is a 64-year-old female in the hospital with angina and newly diagnosed hypertension. She has a blood pressure of 148/92 mm Hg, pulse of 62 beats/minute, respirations of 20 breaths/minute, and an occasional cough. She reports smoking since age 26. She reacted poorly to the nitrates used in the emergency room, so the health care provider has begun with metoprolol 25 mg PO twice a day. A. What are primary nursing concerns for L.W. related to this medication? B. What teaching is important for the nurse to provide L.W. at this time related to metoprolol?