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A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute. To measure your heart rate, simply check your pulse.
Tachycardia is an increased heart rate for any reason. If a fast heart rate is caused by exercise or stress, it's called sinus tachycardia. Sinus tachycardia is a symptom, not a condition. Most heart conditions can lead to different forms of tachycardia. Irregular heart rhythms, called arrhythmias, are one cause.
Bradycardia (brad-e-KAHR-dee-uh) is a slow heart rate. The hearts of adults at rest usually beat between 60 and 100 times a minute. If you have bradycardia, your heart beats fewer than 60 times a minute. Bradycardia can be a serious problem if the heart rate is very slow and the heart can't pump enough oxygen-rich blood to the body.
A heart-healthy lifestyle can help prevent heart damage that can trigger some heart arrhythmias. Types. In general, heart arrhythmias are grouped by the speed of the heart rate. For example: Tachycardia (tak-ih-KAHR-dee-uh) is a fast heartbeat. The heart rate is greater than 100 beats a minute. Bradycardia (brad-e-KAHR-dee-uh) is a slow heartbeat.
Heart palpitations that occur without other symptoms don't often present a significant health risk. Get emergency medical care if heart palpitations are accompanied by: Chest pain that lasts more than a few minutes. Dizziness, lightheadedness or fainting.
In people with AFib, the heart rate may range from 100 to 175 beats a minute. Causes of atrial fibrillation. Problems with the heart's structure are the most common cause of atrial fibrillation (AFib). Heart diseases and health problems that can cause AFib include: A heart problem you're born with, called a congenital heart defect.
Supraventricular tachycardia (SVT) is a type of irregular heartbeat, also called an arrhythmia. It's a very fast or erratic heartbeat that affects the heart's upper chambers. SVT also is called paroxysmal supraventricular tachycardia. The typical heart beats about 60 to 100 times a minute.
A left ventricle (LV) ejection fraction of about 50% to 70% is categorized as normal. A mildly reduced LV ejection fraction is usually between 41% and 49%. A reduced LV ejection fraction is usually 40% or less. Even if you have a normal ejection fraction, your overall heart function may not be healthy.
Often the cause of heart palpitations can't be found. Common causes include: Strong emotional responses, such as stress, anxiety or panic attacks. Depression. Strenuous exercise. Stimulants, including caffeine, nicotine, cocaine, amphetamines, and cold and cough medications that contain pseudoephedrine. Fever.
Symptoms. In some people, an enlarged heart (cardiomegaly) causes no signs or symptoms. Others may have these signs and symptoms of cardiomegaly: Shortness of breath, especially while lying flat. Waking up short of breath. Irregular heart rhythm (arrhythmia) Swelling (edema) in the belly or in the legs.