A nurse is teaching a group of nursing students about antidysrhythmic medications. Which statement by a student indicates understanding of the teaching?

“Antidysrhythmic drugs can cause new dysrhythmias or worsen existing ones.”

“Use of these drugs may be necessary even if the benefits are unknown.”

“For most antidysrhythmic drugs, there is evidence of reduced mortality.”

“Adverse effects of these drugs are mainly noncardiac in nature.”