Abstract

ObjectiveTo assess the effect of cardiac surgery on growth catch-up of Down syndrome (DS) children with failure to thrive (FTT) and congenital heart disease (CHD) and investigate other causes of FTT in DS children.MethodWe conducted a retrospective observational study in tertiary cardiac center from 2015 to 2018. We included all cases of DS diagnosed with CHD and FTT who completed a 1-year follow-up after cardiac surgery. We divided the cases into two groups; “normalize group” includes children who normalized their growth parameters and “underweight group” includes those who remained in FTT category during the follow-up period. We compared both groups for multiple risk factors.ResultMost of DS had FTT upon surgery. Fifty percent of cases completed 1-year follow-up including 29 (60%) in the normalized group and 19 (40%) in underweight group. Within 6 months post-surgery, the normalized group though did not reach yet normalization of growth parameters, demonstrated statically significant improvement in weight for age, weight Z-score in compared to underweight group.Within 12 months post-surgery, the normalized group achieved normalization of growth parameters and continue to show more statistically significant differences in growth parameters.Both groups had comparable post-operation course. Univariate analysis of possible peri-operative risk factors showed no difference between both groups except for presence of untreated subclinical hypothyroidism in 58% of the underweight group versus 17% in control group (p = 0.005).ConclusionFTT in DS patient is multifactorial which needs thorough investigation and work up by multidisciplinary team. Cardiac surgery may not guarantee the improvement of growth parameters.

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