Author Question: A 70-year-old woman with a history of atrial fibrillation takes digoxin and verapamil to control her ... (Read 69 times)

lb_gilbert · **on:** Jul 23, 2018

A 70-year-old woman with a history of atrial fibrillation takes digoxin and verapamil to control her health problem. Verapamil achieves a therapeutic effect by

A) blocking adrenergic receptors and producing antisympathetic effects.
B) inhibiting the movement of calcium ions across the cardiac muscle cell membrane.
C) decreasing sodium and potassium conduction.
D) weakening diastolic depolarization and the action potential duration.

Question 2

An immunocompromised cancer patient has developed cryptococcal meningitis and been admitted to the intensive care unit for treatment with amphotericin B. How should the nurse most safely administer this drug?

A) Hang the drug by piggyback with lactated Ringer's and infuse over several hours to minimize the risk of infusion reaction
B) Infuse the drug over 2 to 4 hours into a central line using an infusion pump
C) Flush the patient's central line with normal saline and infuse the amphotericin B by intravenous push over 5 to 7 minutes.
D) Place the patient on a constant infusion of amphotericin B at a rate determined by the patient's body weight.