Which of the following is NOT a method to restore and maintain normal sinus rhythm?

The chosen answer highlights that rate control medication does not directly aim to restore or maintain normal sinus rhythm but rather focuses on controlling the heart rate in patients with atrial fibrillation. In atrial fibrillation, the heart may beat irregularly and often rapidly; rate control medications, such as beta-blockers or calcium channel blockers, primarily work by slowing down the heart rate. This helps in managing symptoms and reducing the risk of complications rather than converting the heart back to normal sinus rhythm.

In contrast, methods like cardioversion, pharmacologic interventions, and ablation specifically target the restoration of normal sinus rhythm. Cardioversion involves delivering an electrical shock to the heart to reset its rhythm. Pharmacologic interventions encompass various antiarrhythmic drugs aimed at converting or maintaining sinus rhythm. Ablation is an invasive procedure that destroys small areas of heart tissue that may be causing abnormal electrical signals, thus helping to restore normal rhythm.

Thus, recognizing the distinct purposes of these approaches clarifies why rate control medication is not classified among those methods aimed directly at achieving normal sinus rhythm.