Located in southeastern New Mexico, Carlsbad Caverns lie beneath the Earth's surface and were formed when limestone was dissolved by sulfuric acid during the last ice age.
There are three types of rate control medications: Beta Blockers, which slow the heart rate and relax the blood vessels. Examples include Atenolol (TenorminÂ®), Carvedilol (Coregâ¢), Metoprolol (Toprol XLâ¢, LopressorÂ®), and Sotalol (BetapaceÂ®)
1 You've had a medical procedure to treat an arrhythmia called atrial fibrillation. 2  A pacemaker can help regulate your heartbeat after the procedure. 3  You need to take certain heart medicines, such as beta blockers. 4  These medicines can slow your heartbeat too much.