Sinus Tachycardia Vs Svt. Svt is usually faster. In sinus tachycardia heart rate varies from beat to beat and often responds to stimuli or treatment of underlying cause.
With svt impulses in the atria fire rapidly and cause interference with the sa node. Most of the time it doesn t cause. If you ve felt a rapidly beating heart out of the blue you might have checked into it and come across the term supraventricular tachycardia or svt.
The response may only be seen temporarily in sinus tachycardia while svt may be terminated by such maneuvers.
Sinus tachycardia will ususally be 160 or less and have an obvious reason for being such as fever pain anxiety exercise hypovolemia hypoxia or drugs. Sinus tachycardia has a rate of 100 to 150 beats per minute and svt has a rate of 151 to 250 beats per minute. Most of the time it doesn t cause. Unfortunately many beginning students are told that any narrow complex tachycardia with a rate of 150 or less is sinus and over 150 is svt.
