Beta-adrenergic antagonistsDownloads

A 39-year-old woman is brought to the emergency department 30 minutes after her husband found her unconscious on the living room floor. She does not report having experienced light-headedness, nausea, sweating, or visual disturbance before losing consciousness. Three weeks ago, she was diagnosed with open-angle glaucoma and began treatment with an antiglaucoma drug in the form of eye drops. She last used the eye drops 1 hour ago. Examination shows pupils of normal size that are reactive to light. An ECG shows sinus bradycardia. This patient is most likely undergoing treatment with which of the following drugs?

A 55-year-old man comes to the physician because of episodic retrosternal chest pain and shortness of breath for the past 6 months. His symptoms occur when he takes long walks or climbs stairs but resolve promptly with rest. He has a history of chronic obstructive pulmonary disease, for which he takes ipratropium bromide. His pulse is 81/min and blood pressure is 153/82 mm Hg. Physical examination shows mild expiratory wheezing over both lungs. Additional treatment with a beta blocker is considered. Which of the following agents should be avoided in this patient?