ECG
The study of electrical activity of the heart is termed as Electrocardiogram and the instrument use to measure the electrical activity is termed as Electrocardiograph Waveform of human heart P wave Due to atrial contraction Amplitude : 0.25mv Duration :0.12-0.22 s QRS wave Due to relaxation of atria and contraction of ventricles Amplitude : 1.60 mv Duration :0....