Werndale Hospital provides specialised Norwood Surgery with a focus on precise congenital heart reconstruction, advanced neonatal cardiac surgery, and individualized postoperative and staged-care planning. Established in 1991, the accredited hospital is located in Carmarthen, United Kingdom and operates 19 beds, with modern pediatric cardiac, neonatal intensive-care, imaging, and surgical infrastructure.

Norwood Surgery provides the initial surgical pathway for infants with selected forms of single-ventricle physiology, particularly hypoplastic left heart syndrome. Treatment planning considers the size and function of the ventricles, aortic and pulmonary anatomy, atrial communication, pulmonary blood flow, coronary anatomy, and the baby's overall condition. A detailed preoperative assessment using echocardiography and other cardiac investigations helps the multidisciplinary team determine the appropriate surgical strategy and plan subsequent stages of palliation and long-term cardiac follow-up.