Strategies For Treating Hypoplastic Left Heart Syndrome

Hypoplastic left heart syndrome is a type of congenital heart defect that affects the left side of the heart. In patients with this condition, structures on the left side of the heart either fail to form or form improperly. For example, both the mitral and aortic valves may be absent or abnormally small. Similarly, the left ventricle and ascending part of the aorta are often underdeveloped. Hypoplastic left heart syndrome can be diagnosed through an ultrasound while the baby is in the womb, and surgery is needed soon after birth to treat it. If the condition is not detected before birth, it can be diagnosed in newborns through an echocardiogram. Symptoms associated with hypoplastic left heart syndrome include a weak pulse, pounding heartbeat, breathing difficulties, and a blue tinge to the skin. Individuals with this condition frequently have another heart condition called an atrial septal defect (a hole between the heart's upper chambers). In the United States, an estimated 960 newborns are diagnosed with hypoplastic left heart syndrome each year.