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 ...

The tracing shows a regular wide-QRS rhythm at 75 beats/min. A P wave is present in front of each QRS complex, indicating the rhythm is sinus. Prolonged PR interval, widened QRS complexes, and more ...