Right axis deviation
Right Axis Deviation
Right axis deviation (pronounced: rait ak-sis dev-ee-ay-shun) is a term used in electrocardiography to describe an abnormal shift in the electrical axis of the heart. This condition is often associated with conditions such as right ventricular hypertrophy, pulmonary embolism, and lateral myocardial infarction.
Etymology
The term "Right axis deviation" is derived from the English language. "Right" refers to the direction, "axis" refers to the imaginary line around which an object rotates, and "deviation" refers to the act of deviating or turning aside from a course. In this context, it refers to the shift in the electrical axis of the heart towards the right side.
Definition
Right axis deviation is defined as an electrical axis in the frontal plane that is deviated to the right of normal. This is typically diagnosed when the electrical axis is between +90 and +180 degrees.
Causes
Right axis deviation can be caused by several conditions, including:
- Right ventricular hypertrophy: This is a condition where the muscle wall of the right ventricle of the heart becomes thickened.
- Pulmonary embolism: This is a condition where one or more arteries in the lungs become blocked by a blood clot.
- Lateral myocardial infarction: This is a type of heart attack that occurs in the lateral wall of the heart.
Diagnosis
Right axis deviation is typically diagnosed through an electrocardiogram (ECG). The ECG will show the electrical activity of the heart and can help determine if the electrical axis has deviated to the right.
Treatment
Treatment for right axis deviation typically involves treating the underlying cause of the condition. This may involve medication, lifestyle changes, or in some cases, surgery.
Related Terms
- Left axis deviation
- Electrical axis
- Electrocardiogram
- Right ventricular hypertrophy
- Pulmonary embolism
- Lateral myocardial infarction
External links
- Medical encyclopedia article on Right axis deviation
- Wikipedia's article - Right axis deviation
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