Clinical trials

The goal of this observational study is to create a computer model to help doctors predict any problems occurring during development of babies after being diagnosed with brain injury. This will help provide better care to future babies. Next to this, the experiences of parents or caregivers surrounding the first two years after birth of a baby at risk of developing cerebral palsy will be researched to develop recommendations to support parents. Parents of participants will: \- Fill in two online questionnaires, one when their child is 3-4 months corrected age. The second when their child is 2 years corrected age. For the child no additional tests are needed. Only tests that are part of standard clinical practice are performed and are also saved in the study database.

Neurodevelopmental impairment due to delayed brain development and brain injury is a fundamental problem in children with critical congenital heart disease (CCHD). Significant longterm motor-, cognitive-, and behavioral problems are the result of early postnatally and perioperatively induced brain injury. Allopurinol, a xanthine oxidase inhibitor, prevents the formation of toxic free oxygen radicals, thereby limiting hypoxia-reperfusion damage. Both animal and neonatal studies suggest that administration of allopurinol reduces hypoxic-ischemic brain injury, is cardioprotective, and safe. This study aims to evaluate the efficacy and safety of allopurinol administered early postnatally and perioperatively in children with a CCHD requiring cardiac surgery with cardiopulmonary bypass.