Key Learning Points
ECG Waves P, Q, R, S, T
R Wave Page 6
- The R wave(a) is the first positive wave after the P wave.
- The R wave is usually the ECG wave with the largest amplitude or height.
- The height of an R wave depends on which lead is used and the quantity of depolarizing muscle.
- The R wave is produced when the right and left ventricles depolarize inferiority(b).
S Wave Page 7
- The S Wave(a) is the first downward wave after the R wave.
- The S Wave is produced when the superior left lateral part of the left ventricle is depolarized(b).
