Sinus Tachycardia Vs Svt. 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. Svt is usually faster.
In sinus tachycardia heart rate varies from beat to beat and often responds to stimuli or treatment of underlying cause. If the ecg was sinus tachycardia you needn t worry about ventricular tachycardia. Supraventricular tachycardia is usually 180 bpm ekg findings.
But in sinus tachycardia the heart is functioning normally.
The response may only be seen temporarily in sinus tachycardia while svt may be terminated by such maneuvers. With svt impulses in the atria fire rapidly and cause interference with the sa node. A rate of 150 is often aflutter with 2 1 bl. But in sinus tachycardia the heart is functioning normally.
