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In general, tachycardia may cause these symptoms: Racing, pounding heartbeat or flopping in the chest, called palpitations. Chest pain. Fainting. Lightheadedness. Rapid pulse. Shortness of breath. When to see a doctor. Many things can cause tachycardia. If you feel like your heart is beating too fast, make an appointment for a health checkup.
Heart palpitations (pal-pih-TAY-shuns) are feelings of having a fast-beating, fluttering or pounding heart. Stress, exercise, medication or, rarely, a medical condition can trigger them. Although heart palpitations can be worrisome, they're usually harmless.
A heart arrhythmia may feel like a fluttering, pounding or racing heartbeat. Some heart arrhythmias are harmless. Others may cause life-threatening symptoms. There are times when it is OK to have a fast or slow heartbeat. For example, the heart may beat faster with exercise or slow down during sleep.
Symptoms. The main symptom of supraventricular tachycardia (SVT) is a very fast heartbeat that may last for a few minutes to a few days. The heart beats 100 or more times a minute. Usually during SVT, the heart beats 150 to 220 times a minute. The fast heartbeat may come and go suddenly.
Learn more about the symptoms and treatment of this heart rhythm disorder, which causes a rapid heart rate.
A fast, pounding heartbeat could be due to AFib, a type of heart rhythm problem. Know the warning signs and when treatment is needed.
In ventricular tachycardia, the heart beats faster, usually 100 or more beats a minute. Sometimes the rapid heartbeat stops the heart chambers from properly filling with blood. The heart may not be able to pump enough blood to the body. If this happens, you may feel short of breath or lightheaded.
The main symptom of atrial tachycardia is a very fast heartbeat. Typically during atrial tachycardia, the heart beats 150 to 200 times a minute. The fast heartbeat may come and go suddenly, or it can be ongoing.
Learn about common heart rhythm disorders that can cause your heart to beat too fast, too slow or irregularly.
Symptoms of myocarditis can seem like a heart attack. Get emergency medical help if you have unexplained chest pain, rapid heartbeats or shortness of breath. If you have severe symptoms, go to the emergency room or call for emergency medical help. Request an appointment.