Hypoplastic left-heart syndrome (HLHS) — the underdevelopment of the heart’s left side —significantly affects blood flow. Boston Children’s heart specialists offer several HLHS treatment options that are customized to meet a child’s specific needs, aiming to give them either a biventricular or one-and-a-half ventricular circulation. Our team works closely with families to determine if biventricular treatment is best for their child, and we support them through every step of the process.