Pathophysiology
         
Sinus Tachycardia      

A basic rhythm with normal PQRST intervals/durations. Regular R-R intervals at a rate of greater than 120 BPM (subject 6 years of age or older). Each QRS complex is preceded by a normal P-wave. PR interval is normal and remains constant. QRS duration is < l00ms wide.

Rhythm Strip
Sinus Tachycardia Rhythm Strip

Sinus Tachycaria (162 BPM)

12 Lead EKG
Sinus Tachycardia 12 Lead EKG