Show ECG strip showing a normal heartbeat ECG strip showing tachycardia Tachycardia refers to a heart rate that’s too fast. How that’s defined may depend on your age and physical condition. Generally speaking, for adults, a heart rate of more than 100 beats per minute (BPM) is considered too fast. View an animation of tachycardia. Types of tachycardiasAtrial 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 of this particular tachycardia are paroxysmal atrial tachycardia (PAT) or paroxysmal supraventricular tachycardia (PSVT). With atrial or supraventricular tachycardia, electrical signals in the heart’s upper chambers fire abnormally. This interferes with electrical impulses coming from the sinoatrial (SA) node, the heart’s natural pacemaker. The disruption results in a faster than normal heart rate. This rapid heartbeat keeps the heart’s chambers from filling completely between contractions, which compromises blood flow to the rest of the body. A profile for atrial or SVTIn general, those most likely to have atrial or supraventricular tachycardia are:
Atrial or SVT is less commonly associated with heart attack or serious mitral valve disease. Symptoms and complicationsSome people with atrial or supraventricular tachycardia may have no discernible symptoms. Others may experience:
In extreme cases, those suffering with atrial or SVT may also experience:
Treatment for Atrial or SVTIf you have atrial or SVT, it’s possible that you won’t need treatment. But if the episodes are prolonged, or recur often, your doctor may recommend treatment, including:
In patients with Wolff-Parkinson-White Syndrome, medications or ablation may be needed to control paroxysmal supraventricular tachycardia (PSVT). Sinus TachycardiaSinus tachycardia is a normal increase in the heart rate. In this condition, the heart’s natural pacemaker, the sinoatrial (SA) node, sends out electrical signals faster than usual. The heart rate is faster than normal, but the heart beats properly. Causes of sinus tachycardiaA rapid heartbeat may be your body’s response to common conditions such as:
Other, less common causes may include:
Approach to treatmentYour doctor should consider and treat the cause of your sinus tachycardia, rather than just treating the condition. Simply slowing the heart rate could cause more harm if your rapid heartbeat is a symptom of a more serious or long-term problem. Ventricular TachycardiaVentricular tachycardia is a fast heart rate that starts in the heart’s lower chambers (ventricles). This type of arrhythmia may be either well-tolerated or life-threatening, requiring immediate diagnosis and treatment. The seriousness depends largely on whether other cardiac dysfunction is present and on the degree of the ventricular tachycardia. Explaining the problemIn cases of ventricular tachycardia, electrical signals in the heart’s lower chambers fire abnormally. This interferes with electrical impulses coming from the sinoatrial (SA) node, the heart’s natural pacemaker. The disruption results in a faster than normal heart rate. This rapid heartbeat keeps the heart’s chambers from filling completely between contractions, which compromises blood flow to the rest of the body. Causes of ventricular tachycardiaVentricular tachycardia is most often associated with disorders that interfere with the heart’s electrical conduction system. These disorders can include:
Range of symptomsSymptoms for ventricular tachycardia vary. Common symptoms include:
Treatment optionsThe cause of your ventricular tachycardia will inform your treatment options. Possible approaches include:
Printable Arrhythmia Information SheetsWritten by American Heart Association editorial staff and reviewed by science and medicine advisers. See our editorial policies and staff. What should I do if my pulse is high?If you feel like your heart is beating too fast, make an appointment to see a health care provider. Seek immediate medical help if you have shortness of breath, weakness, dizziness, lightheadedness, fainting or near fainting, and chest pain or discomfort.
What is a dangerously high pulse?Tachycardia refers to a heart rate that's too fast. How that's defined may depend on your age and physical condition. Generally speaking, for adults, a heart rate of more than 100 beats per minute (BPM) is considered too fast.
What can cause your pulse to be too high?A number of drugs may cause your heart rate to increase, including some medications that treat colds, asthma, anxiety, depression and high blood pressure. Addictive substances. Caffeine, cigarettes and high levels of alcohol may cause your heart rate to rise after you use those substances.
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