![]() Take over-the-counter cough and cold medicines or prescription medications that can cause a SVT episodeĪlthough it is less common, atrial or SVT is sometimes associated with heart attack.Have coronary artery disease, have had heart surgery or other heart problems.Smoke heavily or use illegal drugs, such as amphetamines and cocaine.You are at increased risk for atrial tachycardia or SVT if you: Children (SVT is the most common type of arrhythmia in kids).In general, those most likely to have atrial or supraventricular tachycardia are: This rapid heartbeat keeps the heart’s chambers from filling completely between contractions, which may compromise blood flow to the rest of the body. ![]() The disruption results in a faster than normal heart rate. ![]() There may also be structural abnormalities of the heart. This interferes with electrical impulses coming from the sinus node, the heart’s natural pacemaker. With atrial or supraventricular tachycardia, electrical signals in the heart’s upper chambers occur abnormally. Some forms of this tachycardia are paroxysmal atrial tachycardia (PAT) and paroxysmal supraventricular tachycardia (PSVT). Types of tachycardias Atrial or Supraventricular Tachycardia (SVT)Ītrial or supraventricular tachycardia (SVT) is a fast heart rate that starts in the upper chambers of the heart. How that’s defined may depend on your age and physical condition. Tachycardia in adults refers to a heart rate of more than 100 beats per minute.
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