Abstract
The present role of the electrocardiogram in clinical medicine is discussed and its limitations as a diagnostic tool are pointed out. Its particular usefulness in the analysis of arrhythmias and the value of certain specific empirically derived patterns are discussed. The misuse of the term "unipolar" is explained, the actual conditions present being only crude approximations of the assumptions upon which the equilateral triangle theory rests. The role of multiple V chest leads and the aV limb leads in clinical electrocardiography is outlined. A brief explanation of stereovectorcardiography and the great promise it holds for the future is presented.