P Wave Axis

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Mel continues his series on ECG basics. Today, he reviews the P Wave Axis. 

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Tiffany F. -

Doesn't the postential start in the SA node which is in the R. atrium and then travels to the Left. Why then are you describing it as starting on the Left shoulder and traveling to the right?

Mel H. -

Oh great pick up - the tech we use inverts the image and I was pointing to my right side but the video makes it look like the left! We will see if we can invert that!

Mel H. -

So I tried to flip it but then the ECG strip is backward - next time I will write backwards so it looks right.

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