additional EKG from prior case. Demonstrates retrograde atri | Figure 1

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additional EKG from prior case. Demonstrates retrograde atrial activation from what is likely a junctional escape focus. This demonstrates unidirectional block. Anterograde conduction is not present evidenced by the dissociated sinus P waves. Retrograde activation through the av persists.

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how do you describe the atrial electrical activity in this ECG, is this Afib or Multifocal atrial activity? How are these two different from each other?

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