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Usually exceeding 100 beats per minute, Supraventricular Tachycardia (SVT) is a disorder whereby faulty electrical signals above the ventricles cause the heart to beat abnormally quickly. Starting abruptly and spanning a few seconds to hours, episodes might cause palpitations, dizziness, chest pain, dyspnoea, or fainting.
Stress, coffee, alcohol, smoking, or underlying cardiac disease can all set off SVT. It can also happen to those without seeming cardiac problems. Usually to find abnormal heart rhythms, diagnosis calls for an electrophysiological investigation, Holter monitoring, or an electrocardiogram (ECG).
Treatment depends on the degree of severity and frequency of episodes. Vagal manoeuvres, such as bearing down or applying cold water to the face, can sometimes stop an episode. More persistent cases may require the administration of medications like beta-blockers or calcium channel blockers. or people who have severe or recurring SVT, catheter ablation may be recommended because it is a less invasive way to get rid of abnormal electrical paths.
Reducing stress, minimising stimulants, and preserving heart health—among other lifestyle modifications—can help stop episodes. Seeking medical assistance is vital to avoid consequences like heart failure or other arrhythmias should SVT symptoms arise often or severely.