![]() Preductal coarctation results when an intracardiac anomaly during fetal life decreases blood flow through the left side of the heart, leading to hypoplastic development of the aorta. Blood flow to the aorta that is distal to the narrowing is dependent on the ductus arteriosus therefore severe coarctation can be life-threatening. Preductal coarctation: The narrowing is proximal to the ductus arteriosus.There are three types of aortic coarctations: ![]() Physiologically its complete form is manifested as interrupted aortic arch. If the narrowing is severe enough, the left ventricle may not be strong enough to push blood through the coarctation, thus resulting in a lack of blood to the lower half of the body. Since the aorta is narrowed, the left ventricle must generate a much higher pressure than normal in order to force enough blood through the aorta to deliver blood to the lower part of the body. When a patient has a coarctation, the left ventricle has to work harder. Other heart defects may also occur when coarctation is present, typically occurring on the left side of the heart. The arch may be small in babies with coarctations. Coarctations are most common in the aortic arch. The word coarctation means "pressing or drawing together narrowing". Illustration depicting coarctation of the aortaĬoarctation of the aorta ( CoA or CoAo), also called aortic narrowing, is a congenital condition whereby the aorta is narrow, usually in the area where the ductus arteriosus ( ligamentum arteriosum after regression) inserts.
0 Comments
Leave a Reply. |