Matching Pairs Ch. 8 Cardiac Conduction Online version Cardiac Electrical System by Linu John 1 QRS Complex 2 P wave 3 T wave atrial depolarization ventricular repolarization ventricular depolarization 1 Isoelectric line 2 interval 3 complex 4 negative deflection 5 wave 6 positive deflection deflection away from the baseline several waves that are measured together upward deflection downward deflection wave plus a segment baseline or flat portion 1 Bundle of His 2 Purkinje Fibers 3 Bundle Branches 4 AV Node 5 SA node 60-100 bpm 40- 60 bpm (has two routes) 40-60 bpm (step after SA node) 40-60 bpm (named after a MD) 20-40 bpm 1 QT interval 2 R-R interval 3 QRS Interval 4 PR Interval 5 ST segment 0.12- 0.20 second less than 0.12 second should stay at baseline should be regular 0.36 to 0.44 second