Does heart pacemaker control low and high heart beats?

Yes, a heart pacemaker can help regulate both low and high heartbeats. It is primarily used to treat bradycardia, a condition characterized by an abnormally slow heart rate, by delivering electrical impulses to stimulate the heart. Some advanced pacemakers also have functions to manage tachycardia, which is an abnormally fast heart rate, by adjusting pacing as needed. Overall, pacemakers help maintain a normal heart rhythm.