Second degree AV block differential diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Cafer Zorkun, M.D., Ph.D. [2]

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Differentiating Second degree AV block from other Diseases

• Second degree AV Block may be simulated by blocked PACs. Must be very careful to assure that the P to P intervals are constant.
• 2:1 conduction may simulate sinus bradycardia as the blocked P waves may fall on the preceding T waves.

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