Which of the following statements is true concerning anti-arrhythmic drugs?

Question

Quizplus · Accepted Answer

Many anti-arrhythmic drugs have a low toxic/therapeutic ratio, meaning that the dosage that is effective for treating arrhythmias is close to the dosage that can cause toxicity. Some anti-arrhythmic drugs, such as Class IA agents like procainamide and Class III agents like dronedarone, can be especially toxic. Therefore, careful monitoring and dosing is required when using anti-arrhythmic drugs. Choices A, B, and D are all incorrect. Amiodarone is not the only anti-arrhythmic drug without increased mortality, and it has many potential side effects. Long-acting calcium channel blockers like verapamil and diltiazem are not associated with increased cardiovascular morbidity and mortality. Finally, not all patients with arrhythmias need to be initiated on anti-arrhythmic therapy in the hospital.

Which of the Following Statements Is True Concerning Anti-Arrhythmic Drugs