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