What does it mean that the ECG leads correspond to the heart wall?

ECG is an examination method used to record the electrical activity of the heart. ECG leads refer to placing electrodes at specific positions in ECG recording to observe and record the characteristics of the electrical activity of the heart.

Different ECG leads correspond to the electrical activity of different parts of the heart, thus reflecting the state of the heart. ECG leads generally include lead I, lead II, lead III, lead V1, lead V2, lead V3, lead V4, lead V5, and lead V6. Through these different leads, the electrical activity of different parts of the heart can be observed and analyzed, and whether there is heart disease, myocardial ischemia, arrhythmia, etc. can be judged accordingly. The significance of ECG leads corresponding to heart wall lies in helping doctors to evaluate heart function and abnormal conditions more accurately, and providing important reference basis for diagnosis and treatment.