Author Question: A prescriber orders verapamil (Covera HS) for a patient who is taking digoxin (Lanoxin) and ... (Read 54 times)

naturalchemist · **on:** Jul 23, 2018

A prescriber orders verapamil (Covera HS) for a patient who is taking digoxin (Lanoxin) and warfarin. The nurse will expect the prescriber to _____ the dose of _____.

a. lower; digoxin
b. increase; digoxin
c. lower; warfarin
d. increase; warfarin

Question 2

The nurse is teaching a class on dysrhythmias and associated therapy. The nurse asks the class, Which cardiac dysrhythmia would result in the lowest cardiac output, and what treatment would be effective?

The class best demonstrates understanding by responding that _____ results in the lowest cardiac output, and treatment includes _____.
a. atrial flutter; lidocaine
b. tachycardia; atropine
c. first-degree heart block; verapamil (Calan)
d. ventricular fibrillation; defibrillation

parshano · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

ANS: A
Calcium channel blockers, such as verapamil, can increase levels of digoxin, so patients taking these drugs may need to have their digoxin dose reduced. Increasing the dose of digoxin can result in digoxin toxicity. Verapamil does not affect warfarin levels.

Answer to Question 2

ANS: D
With ventricular fibrillation there is no cardiac output, because the pumping action of the heart stops. Treatment with electrical countershock is indicated to restore cardiac function. Atrial flutter, tachycardia, and first-degree heart block do not result in the lowest cardiac output.