Mortality in Down's syndrome in relation to congenital malformations.
Heart and gut birth defects create a ten-fold death risk in children with Down syndrome, so early medical follow-up is critical.
01Research in Context
What this study did
Doctors tracked 219 Irish children who had Down syndrome. They checked who also had heart or gut birth defects. Ten years later they counted how many children had died.
What they found
Kids with a heart defect were ten times more likely to die within ten years. If the child had both a heart and a gut defect, risk jumped even higher. Children with no birth defects mostly lived.
How this fits with other research
Klein et al. (2024) looked at the same group, only grown up. They found women over 50 with Down syndrome break bones twice as often as peers. The childhood heart danger and adult fracture risk both show the same point: health problems stack up across the life span.
Whitehouse et al. (2014) followed adults with Down syndrome for 14 years and mapped when dementia starts. Hatton et al. (1999) mapped early death risks in children. Together they give a full-life picture: check hearts early, watch bones mid-life, screen for dementia later.
Costa et al. (2017) found that half of adults with Down syndrome already have weak bones. Their data line up with Klein et al. (2024) and tell you to start fall-prevention plans before fractures happen.
Why it matters
When you see a new client with Down syndrome, ask for a heart check first. If surgery was done, still track heart health yearly. Add bone and balance screens after age 30. These simple checks turn long-ago birth defect data into real-time safety plans you can use today.
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02At a glance
03Original abstract
Down's syndrome (DS) is the most common form of intellectual disability. The syndrome is characterized by congenital malformations, especially of the heart and gastrointestinal tract, which can result in high mortality rates in the affected population. Many improvements have been made in the medical treatment of this syndrome during the past few decades and the survival of individuals with DS has increased in the industrial world. The aim of the present study was to investigate mortality in relation to congenital malformations. Medical records from all liveborn children with DS delivered between 1973 and 1980 in northern Sweden were studied, and malformations and causes of death were recorded. Out of the 219 children included in the study, a congenital heart defect was reported in 47.5% of subjects, 42.1% of whom had complete atrioventricular septal defect. Gastrointestinal tract malformations were present in 7.3% of subjects, and was frequently associated with a cardiac malformation and a very high mortality rate. Other major and minor congenital anomalies were present in 5.5% and 5.5% of subjects, respectively. In the 14.5-year follow-up of 213 children, the rate of survival was 75.6%. Mortality rates within one and 10 years after birth were 14.6% and 23.5%, respectively. Mortality within 10 years differed significantly between children with (44.1%) and without (4.5%) a congenital heart defect. A very high mortality rate was observed among children with a congenital heart defect, especially when it was combined with a gastrointestinal malformation.
Journal of intellectual disability research : JIDR, 1999 · doi:10.1046/j.1365-2788.1999.00198.x