Electrocardiographs ECG. OUTLINES :. Introducing what is meant by Biopotential signals. what is Electrocardiograph (ECG). The conduction system. The standard Lead system. The ECG machine Construction. . Introduction to Biopotential Signals. I. Electrocardiograph (ECG). I.
The ECG is a graph showing the electrical activity due to the systole and diastole of the heart muscle
1-Amount of electrical activity of the heart.
2-The time required for the electrical activity to travel through the heart .
3-The rate and rhythm of the heart.
SA node -> atrial muscle -> AV node -> bundle of His -> Left and Right Bundle Branches -> Ventricular muscle
1- Medical Oscilloscope: vertical output is severely limited.
2- strip chart recorder (speed 25 mm/s) and has a grid pattern that is 50 mm wide.
The small grid are 1 mm apart.
The vertical scale is calibrated at 0.1 mV/mm