What role do cardiac drugs play in arrhythmias?

Cardiac drugs specifically designed to manage arrhythmias primarily serve to stabilize heart rhythms. These medications work by altering electrical conduction, heart rate, or the overall excitability of cardiac tissues, which helps restore a normal heartbeat. While it's true that certain drugs, if misused or given inappropriately, can induce extrinsic arrhythmias as a side effect or complication, this does not reflect the primary role of cardiac drugs in treating arrhythmias.

Medications for arrhythmias aim to prevent irregular heartbeats and maintain a stable rhythm, which can enhance the quality of life for patients suffering from these conditions. Other answers referencing the use of these drugs in heart transplant patients or for improving cardiovascular endurance do not relate directly to the primary mechanism and intention in the context of treating arrhythmias. The most relevant and accurate description of their role directly addresses their effectiveness in stabilizing heart rhythms.