The patient presents to the emergency department complaining of lightheadedness and states, “I feel like my heart is racing.” Upon assessment, the nurse notes the patient is diaphoretic and pale. Vital signs are significant for a heart rate of 220 bpm, blood pressure of 70/50 mm Hg, and oxygen saturations of 96%. The 12-lead EKG indicates supraventricular tachycardia. Which medication does the nurse prepare to administer?

A patient presents to the emergency department complaining of intractable epistaxis. Upon assessment, the nurse notes petechiae and ecchymosis covering the patient’s chest and arms. The patient is otherwise well. Laboratory results are normal with exception of the patient’s platelet count, which is abnormally low (29,000/microL). The nurse anticipates an order for which medication?

The patient is receiving lorazepam for conscious sedation for a procedure. The nurse notes the patient’s respiratory rate has decreased to 4 breaths per minute. The nurse anticipates administering which of the following medications?