Comment on the diagnosis of the ECG tracing shown below.
Correct Answer: Second degree AV block type 2, infranodal
Description: Symmetry in PR interval before and after the missed beat --> Indicating Second degree AV block type 2: infranodal. In Second degree AV block type 1 --> Serial lengthening of PR interval before and after the missed beat. In Third degree AV block --> complete dissociation b/w atria and ventricles.
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