abnormally fast heartbeat is called
Slow Heartbeat. Slow heartbeat (heart rate), called bradycardia, is an arrhythmia, or disorder of the heart’s rhythm. Each day, a normal heart beats about 100,000 times, at a rate any­where from 60 to 100 times a minute. Changes in heart rate caused by activity, diet, medications, and age are normal and common. A normal heart rate is 50 to 100 beats per minute. Arrhythmias and abnormal heart rates don't necessarily occur together. Arrhythmias can occur with a normal heart rate, or with heart rates that are slow (called bradyarrhythmias -- less than 50 beats per minute). Slow heartbeat (heart rate), called bradycardia, is an arrhythmia, or disorder of the heart’s rhythm. Each day, a normal heart beats about 100,000 times, at a rate any­where from 60 to 100 times a minute. Changes in heart rate caused by activity, diet, medications, and age are normal and common. What counts as an abnormally slow heartbeat for one person may not be the same for another. For example, a young, strong, healthy athlete may have a resting heart rate of 30-40 beats per minute, but may easily increase his heart rate to 180 beats per minute with exercise. This is normal. Atrial or Supraventricular Tachycardia (SVT). Atrial or Supraventricular tachycardia (SVT) is a fast heart rate that starts in the upper chambers of the heart. Some forms are called paroxysmal atrial tachycardia (PAT) or paroxysmal supraventricular tachycardia (PSVT). Atrial or Supraventricular tachycardia (SVT) is a fast heart rate that starts in the upper chambers of the heart. Some forms are called paroxysmal atrial tachycardia (PAT) or paroxysmal supraventricular tachycardia (PSVT). Slow Heart Beat (Bradycardia). An abnormally slow sinus heart rate is called the “sick sinus syndrome” and, if severe, results in symptoms of fatigue. In some such cases a permanent pacemaker is needed to be implanted to generate a normal heart rate. Many people with sick sinus syndrome also develop atrial fibrillation. The electrical impulses in the heart can be too slow, causing a decrease in heart rate. This is called bradycardia; brady means slow and cardia means heart. Or, the impulses can be abnormally fast, which is called tachycardia; tachy means rapid or quick. A rapid heartbeat, also called tachycardia, is a condition in which the heart is beating fast, generally more than 100 beats per minute for an adult. An irregular heartbeat is an arrhythmia (also called dysrhythmia). Heart rates can also be irregular. A normal heart rate is 50 to 100 beats per minute. Arrhythmias and abnormal heart rates don't necessarily occur together.
Tachycardia.