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Background: There are only few reports on cyanotic congenital heart diseases (CCHD) among Nigerian and African Children. The current report aim to provide the most recent hospital based data on the distribution of CCHD in children less than 14 years of age, the demographic characteristics and risk factors Results: There were 352 subjects with CCHD with a male to female ratio of 1.34:1. The children were age 2 days to 14 years with a mean ± SD of 38.62±44.74 months and median of 21 months. The most common type of CCHD (both isolated and multiple CCHD) was tetralogy of Fallot (TOF) followed double outlet right ventricle (DORV) and transposition of the great arteries (TGA). The most common mode of presentation was cyanosis.Conclusions: TOF was found in almost half of the subjects. Cases of DORV which have been rarely reported were more than those with TGA. Most were diagnosed late. Cyanosis was the most common mode of presentation. Clinical features are protean; thus a high index of suspicion is required to make an early diagnosis.

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