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Supraventricular tachycardia is an ominous rhythm with rates often between 170-230 per minute. The telltale sign of supraventricular tachycardia is the narrow QRS which defines its supraventricular origin and its regular, rapid pattern. This rhythm is most likely not sinus tachycardia due to its very fast rate. For those who are at rest, narrow QRS tachycardias over 150 / minute are most often supraventricular tachycardia.
Supraventricular Tachycardia.mp4DIAGNOSIS
DIAGNOSIS
The diagnosis of supraventricular tachycardia (SVT) involves medical history assessment, physical examination, electrocardiogram (ECG), Holter monitoring, and electrophysiological study.
TREATMENT
TREATMENT
Treatment varies by severity and frequency. Mild cases require observation and lifestyle modifications (like reducing stress and caffeine). For persistent cases, vagal maneuvers are suggested, and if ineffective, antiarrhythmic drugs may be prescribed.
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