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Why would a Bundle Branch block show up as a prolonged QRS complex? (1 mark)

Why would a Bundle Branch block show up as a prolonged QRS complex? (1 mark)

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1. In case of left bundle branch block it increase the potential of left ventricle due to hypertrophy. This cause conduction druggies that may leads to prolong QRS Complex.

2. In right bundle branch also myocardium fails in carryout cinduction, so QRS Complex will widen.

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