Advanced EKG Interpretation - University of Toledo

3. Is there a P wave before each QRS? Are P waves upright and uniform? Usually inverted or absent, may be before, during or after QRS complex 4. What is the length of the PR interval? Will be shortened, if occurs before QRS complex, otherwise not measurable 5. Do all QRS complexes look alike? What is the length of the QRS complexes? Yes ................
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