Several points of convincing evidence in the upper strip indicate that the rhythm is VT. First, the beginning of the wide QRS tachycardia near the end of the strip is not preceded by a P wave, proving ...
In front of the first wide-QRS complex, there is a prematurely occurring P wave (P1), indicating a premature atrial complex (PAC). The next P wave (P2) is barely seen, and subsequent P waves are ...