Neonatal pulmonary hypertension is a rare but serious condition resulting from a lack of adaptation to extra-uterine life in some newborns. In the short term, the risk of death requires rapid and appropriate management of this transient pathology.

In the long term, these newborns present a greater brain vulnerability, a consequence of the pathology itself with cerebral hypoxia but also invasive and aggressive therapies. Although current scientific evidence indicates a correlation with the existence of neurological developmental disorders, the understanding of the long-term neurological outcome of these babies remains poorly documented. Better knowledge of remote neuro-psychomotor development of the critical period

Inclusion Criteria:

• All parenting authority holders of children aged 1 to 5 years, born after 34 weeks of amenorrhea and having been cared for neonatal PAH in paediatric resuscitation

Exclusion Criteria:

• Holders of parental authority who cannot answer the questionnaire because they do not speak French.
• Opposition of one of the two holders of parental authority
• Minor parental authority holders
• Holders of parental authority under safeguarding of justice, guardianship or guardianship
• Newborns with neonatal PAH with an associated diagnosis of diaphragmatic hernia or cyanogenic congenital heart disease
• Newborns with neonatal PAH not treated with nitrogen monoxide