Hypoplastic Left Heart Syndrome


MSH: A condition caused by underdevelopment of the whole left half of the heart. It is characterized by hypoplasia of the left cardiac chambers (HEART ATRIUM; HEART VENTRICLE), the AORTA, the AORTIC VALVE, and the MITRAL VALVE. Severe symptoms appear in early infancy when DUCTUS ARTERIOSUS closes.,NCI: A rare congenital cardiovascular disorder characterized by severe underdevelopment of the left side of the heart. Signs and symptoms include tachypnea, cyanosis, dyspnea, and lethargy.

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