Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo

Case Study

c. Based on the ECG data (no discernable P waves and narrow QRS complexes) and heart rate (greater than 100 beats per minute), the client has atrial fibrillation with rapid ventricular response.
d. Beta-adrenergic blockers such as metoprolol are an option for treating atrial fibrillation with rapid ventricular response.

Review Questions

c. Metoprolol is a beta-adrenergic blocker that slows the heart rate. If a client takes too much metoprolol, they may experience bradycardia.
c. Verapamil is a nondihydropyridine calcium channel blocker. It can decrease cardiac contractility, which can exacerbate congestive heart failure.
b. Procainamide is a sodium channel blocker antidysrhythmic drug, but it also has activity as a potassium channel blocker. Potassium blocker drugs require monitoring of the QT interval.
d. Quinidine is associated with a high incidence of diarrhea. Because diarrhea can cause electrolyte abnormalities, excessive diarrhea should be reported to the health care provider.
b. Metoprolol is a beta-adrenergic blocker. Beta-adrenergic blockers can cause fatigue.
a. Potassium channel blockers slow repolarization and are associated with torsade de pointes, a serious ventricular dysrhythmia.
b. Amiodarone can cause photosensitivity resulting in a bluish-gray color of sun-exposed skin.
b. Metoprolol tartrate does not require inpatient initiation. Dofetilide and sotalol require inpatient initiation. Mexiletine is used for ventricular arrhythmias.
c. Diltiazem and verapamil have FDA warnings concerning interactions with simvastatin. Diltiazem and verapamil inhibit the metabolism of simvastatin, increasing simvastatin plasma levels and the risk for adverse effects.
a. Because digoxin is eliminated by the kidneys, acute kidney injury puts the client at risk for digoxin toxicity. Some symptoms of digoxin toxicity are stomach upset, visual changes, and confusion.

This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution License and you must attribute OpenStax.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:
    Access for free at
  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:
    Access for free at
Citation information

© May 15, 2024 OpenStax. Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License . The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.