Monday, February 4, 2013

Answer and Explanation 3

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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