What is the purpose of connecting multiple leads to the chest region for a detailed evaluation of the heart's function?

Step-by-step solution

Electro-cardiograph is used to obtain an electrocardiogram (ECG). ECG is a graphical representation of the electrical activity of the heart during a cardiac cycle. To obtain a standard ECG a patient is connected to the machine with three electrical leads (one to each wrist and to the left ankle) that continuously monitor the heart activity. For a detailed evaluation of the heart’s function, multiple leads are attached to the chest region . Each peak in the ECG is identified with a letter from P to T that correspond