Woman Awakens With Rapid Heart Rate
Clinician Reviews. 2015 February;25(2):14-15
January 27, 2015|Clinician Reviews
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ANSWER
The correct interpretation of this ECG is atrial flutter with a 2:1 block. Careful inspection of lead I reveals a P wave at the terminal portion of the QRS complex, in addition to the P wave seen with a consistent PR interval of 150 ms. This results in two P waves for each QRS complex. Given the presence of the flutter waves, an accurate assessment of the ST segment is not possible.
