To determine whether the electrical axis of the ECG is shifted to the right, you need to look at the direction of the QRS waveforms in leads I and III of the ECG, i.e., the simple visual inspection of the average QRS ECG axis. The simplest way to determine whether the electrical axis is shifted is the simple visual inspection of the average QRS electrical axis. Rightward shift of the electrical axis of the ECG is manifested by the fact that the main wave of the QRS in lead I is in a downward direction, and the direction of the main wave of the QRS in lead III is in an upward direction. Rightward deviation of the ECG electrical axis means that the range of the electrical axis is located in the range of +90°~+180°, and located in the range of -90°~-180° is called extreme rightward deviation of the electrical axis. The excursion of the electrocardiographic axis is generally influenced by the anatomic position of the heart within the thoracic cavity, the mass ratio of the two ventricles, and the function of the intraventricular conduction system. Right ventricular hypertrophy and left posterior branch block can cause rightward deviation of the electrical axis. If there is any uncomfortable manifestation, it is recommended to go to the hospital in time.