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Supraventricular tachycardia (SVT) is a type of abnormal heart rhythm that originates in the upper chambers (atria) of the heart. It is characterized by a rapid heart rate, typically over 100 beats per minute, and can cause symptoms such as palpitations, shortness of breath, chest pain, dizziness, and fainting.
SVT is caused by abnormal electrical activity in the heart, which can be triggered by various factors such as stress, caffeine, alcohol, tobacco, and certain medications. In some cases, it can occur without any apparent cause.
The treatment of SVT depends on the severity and frequency of the episodes, as well as the underlying cause. In mild cases, lifestyle modifications such as avoiding triggers and reducing stress may be sufficient. In more severe cases, medications such as beta blockers, calcium channel blockers, and antiarrhythmic drugs may be used to control the heart rate and rhythm.
In some cases, SVT may require more invasive treatments such as electrical cardioversion, which uses a controlled electric shock to restore normal heart rhythm, or catheter ablation, which involves the use of a catheter to destroy the area of the heart responsible for the abnormal electrical activity.
It is important to seek medical attention if you experience symptoms of SVT or any other type of abnormal heart rhythm.