👉 "Poststernal" is a medical term that refers to an abnormal movement of the heart muscle from its normal position in the chest, which can occur when there is a blockage or obstruction in the coronary arteries. This condition can cause pain, swelling, and discomfort in the chest region. The heart muscle is divided into three main sections: the right atrium, the left atrium, and the right ventricle. The heart muscle of the right atrium moves upwards towards the right vent
