Ages and Stages Questionnaires in the assessment of young children after cardiac surgery.

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This study explored the prospective use of the Ages and Stages Questionnaires-3 in follow-up after cardiac surgery. For children undergoing cardiac surgery at 5 United Kingdom centres, the Ages and Stages Questionnaires-3 were administered 6 months and 2 years later, with an outcome based on pre-defined cut-points: Red = 1 or more domain scores >2 standard deviations below the normative mean, Amber = 1 or more domain scores 1-2 standard deviations below the normal range based on the manual, Green = scores within the normal range based on the manual. From a cohort of 554 children <60 months old at surgery, 306 participated in the postoperative assessment: 117 (38.3%) were scored as Green, 57 (18.6%) as Amber, and 132 (43.1%) as Red. Children aged 6 months at first assessment (neonatal surgery) were likely to score Red (113/124, 85.6%) compared to older age groups (n = 32/182, 17.6%). Considering risk factors of congenital heart complexity, univentricular status, congenital comorbidity, and child age in a logistic regression model for the outcome of Ages and Stages score Red, only younger age was significant (p < 0.001). 87 children had surgery in infancy and were reassessed as toddlers. Of these, 43 (49.2%) improved, 30 (34.5%) stayed the same, and 13 (16.1%) worsened. Improved scores were predominantly in those who had a first assessment at 6 months old. The Ages and Stages Questionnaires results are most challenging to interpret in young babies of 6 months old who are affected by complex CHD.