Rightward cardiac axis, also known as rightward deviation of the electrical axis, is a manifestation in the electrocardiogram. The rightward deviation of the electrical axis can be physiologic, as seen in normal human cardiac variants, or it can be due to certain organic heart diseases, such as right ventricular hypertrophy, right bundle branch block, preexcitation syndrome, and lateral wall myocardial infarction.
The direction of the electrical axis in normal people is generally -30° to 90° for the QRS electrical axis, and if the direction of the electrical axis is greater than 90° and less than 180°, then the electrical axis is right deviated. Physiologic variations of the heart in normal people may also show rightward deviation of the electrical axis, which is commonly seen in people with pendulous hearts or those born with right-sided hearts, often without cardiac discomfort.
For patients with organic heart disease, such as right ventricular hypertrophy, patients often due to pulmonary hypertension, cardiomyopathy, etc., the etiology of which is different, the clinical manifestations are inconsistent; right bundle branch block, patients often have no specific manifestations; patients with preexcitation syndrome, there may be panic attacks, fatigue, fainting and other manifestations; and patients with lateral wall myocardial infarction is often accompanied by chest pain.
In addition to the above diseases, it can also be seen in emphysema, secondary atrioventricular septal defect and other diseases, so if the electrical axis right deviation situation, should be timely in the regular hospital, to clarify the cause of the disease.