Final answer:
The rhythm in (lead II): type of ventricular tachycardia with varying patterns on an ECG is option B). Polymorphic VT.
Step-by-step explanation:
Polymorphic VT refers to a specific type of ventricular tachycardia that exhibits varying patterns or morphologies on an electrocardiogram (ECG). Lead II is one of the 12 leads used to record the electrical activity of the heart. It is obtained by placing the positive electrode on the right arm (RA) and the negative electrode on the left leg (LL).
When identifying polymorphic VT in Lead II, you would observe irregular or changing shapes of the QRS complexes, which represent ventricular depolarization. Normal QRS complexes are usually uniform in shape, but in polymorphic VT, they vary in appearance due to multiple ectopic foci or areas of abnormal conduction.
For example, you may see a combination of wide, narrow, or bizarre QRS complexes alternating irregularly in Lead II. Therefore the correct answer is option B). Polymorphic VT.