What is regional wall motion abnormality?

Regional wall motion abnormality is a term commonly used in echocardiography. It can also be applied to other modalities of image the motion of the cardiac structures. Regional wall motion abnormality means that the motion of a region of the heart muscle is abnormal. It can reduced (hypokinesia), absent (akinesia) or increased (hyperkinesia). Occasionally it can be opposite of what is expected; moving out in systole rather than moving in. This type of abnormal motion is seen termed dyskinesia. The regional wall motion abnormalities give a hint to the coronary arteries which are diseased. For example, if the lower region of the left ventricle (inferior wall) is hypokinetic, this means that the right coronary artery is involved. If the whole left ventricle is hypokinetic, then it is called global hypokinesia. This occurs in dilated cardiomyopathy. Then it is not a regional wall motion abnormality.