3. The correct answer is B Right Bundle Branch Block. In a RBBB the QRS duration is greater than .12 seconds in limb leads. It also has to have a RSR pattern in V1 with a depressed ST segment and inverted T waves. There is also a deep S wave in V5-V6. There is a normal PR interval. There is a intrinsicoid deflection delayed to 0.07 seconds in V1.
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