A Guide to Reading and Understanding the EKG

the same direction as the QRS, the rhythm can be said to be sinus. For instance note in the EKG segment below that there is a P-wave before each QRS (highlighted in blue) and that it is pointing up as is the QRS segment. Figure 3 - Determining the Rhythm Source Also look at the quality and quantity of P-waves before each QRS. ................
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