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Discussion Starter · #1 ·
Two strange waves that are commonly asked in USMLE exams.

The Delta Wave: Seen Wolf Parkinson White Syndrome which is essentially a slow upstroke of the QRS complex.

The Osbourn Wave: Seen in hypothermia which is an upward deflection between the QRS and the ST segment looking like an ST elevation MI.

Here are two ECG strip delineating the two waves: (click on thumbnails to enlarge)

Rectangle Slope Font Line Parallel
Attribution: Wikimedia Commons

Rectangle Font Pattern Parallel Slope
Attribution: Wikimedia Commons
 

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Thanks, Osbourn waves also known as J waves. We can see them starting from V2.
 
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