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Diagnosis: The electrocardiogram reveals atrial flutter with block. The saw tooth pattern is consistent with atrial flutter at a much higher rate, but due to the block, a much slower ventricular rate.
Acknowledgement: Case presented by Nahum Kovalski, BSc, MDCM, Terem Emergency Medical Centers, Jerusalem, Israel.
Clinical Challenge: September, 2013
Nahum Kovalski, BSc, MDCM
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