Choosing Hospital Ruber International for Glenn procedure gives patients access to experienced pediatric cardiac surgeons, advanced diagnostic technology, and comprehensive congenital heart care. Established in 1982, the ISO hospital in Madrid, Spain has 345 beds and provides specialised cardiac services.

The Glenn Procedure may be performed as the second stage of treatment for children with certain single-ventricle heart defects. It helps reduce the workload on the functioning ventricle by directing blood from the upper body directly to the pulmonary arteries. Before surgery, doctors evaluate the child's cardiac anatomy, pulmonary artery anatomy, ventricular function, and oxygen saturation. Close postoperative monitoring and regular pediatric cardiology appointments support long-term care.