Which one of the following descriptions or statements about an electrocardio- gram (ECG) is NOT correct? A. It is a record of the voltage changes (as measured at the body surface) due to the depolarisation of the muscle cells of the heart as it beats. B. The potentials measured by the ECG electrodes are combined in various ways to give 12 different ECGs. C. The ECG consists of the electrical events that follow the depolarisation of ventricles (PQR section), the depolarisation of atria (the S section) and the repolarisation of the ventricles (the T section). D. The value of the potential difference called “limb lead II” varies with time to produce the familiar ECG trace – a graph of voltage vs time.
Option C. The ECG consists of the electrical events that follow the depolarisation of ventricles (PQR section), the depolarisation of atria (the S section) and the repolarisation of the ventricles (the T section).Is incorrect statement.
