Initiation of an Atrioventricular Nodal Reentry Tachycardia
There is an abnormal P wave (P′) and atrioventricular nodal delay (long P′R interval) before onset of the tachycardia.
There is an abnormal P wave (P′) and atrioventricular nodal delay (long P′R interval) before onset of the tachycardia.