Abstract
Background: According to the World Health Organization, about 5% of children world-wide of 14-year-old and under have a moderate to severe developmental disability, and up to 15% of children under 5-year-old are developmentally delayed. Purpose: To determine the prevalence, socio-demographic profile, aetiologies, and the clinical presentation of developmental delay in children less than 6-year-old at the child neurology unit in a university-affiliated hospital in Yaounde. Materials and methods: It was a crosssectional descriptive study carried out in Yaounde Gynaeco-Obstetric and Paediatric Hospital (Cameroon) from August to December 2012. Children aged between 5 - 72 months with a developmental quotient less than 70 were enrolled. Developmental delay (DD) was diagnosed and classified using the Denver developmental screening test (DDST). Data concerning the child (age, gender, severity of DD), the mother (age, age at conception, educational level, marital status), history of pregnancy and delivery, perinatal and postnatal events, results of para-clinical explorations (EEG, CT-scan, genetic tests), the severity of DD and the probable or demonstrate cause of DD were recorded on a standardized questionnaire. The chisquare test was used to compare variables. Results: During the study period, 2171 children aged 5 - 72 months consulted the paediatric department of the hospital, 296 were examined at the child neurology unit of which 153 had a developmental quotient less than 70, giving a hospital prevalence of 7.0% and a prevalence of 51.7% at the child neurology unit. The mean age was 26.6 ± 18.0 months and there were 56% males. The main reason for consulting was tonus disorder (43.8%) and the developmental area of parental concern was the motor domain (90.2%). Regarding the clinical presentation, 75.2% of our population were children with cerebral palsy. DD was severe, mild, moderate and profound respectively in 14.2%, 13.5%, 12.2%, and 11.1%. Gross DD represented 90.2% of all DD children. The causes of DD were hypoxic-ischemic encephalopathy (41.8%), epilepsy (13.7%), sequelae of meningitis (6.5%), sequelae of kernicterus (6.5%), and infectious embryofoetopathies (5.2%). Conclusion: Developmental delay is frequent in paediatric neurology, with perinatal disorders being the leading aetiologies in Cameroon. Prevention of perinatal hypoxic-ischemic encephalopathy risk factors needs to be reinforced.
Highlights
Neurological disorders in children are major concerns to parents, health workers and governments worldwide.This is due to their chronic nature and tendency to cause disability, handicaps and loss of potential of the affected child [1]
Developmental delay is frequent in paediatric neurology, with perinatal disorders being the leading aetiologies in Cameroon
We underwent this study to determine the prevalence, socio-demographic profile, aetiologies, and the clinical presentation of developmenttal delay in children less than 6-year-old at the child neurology unit in a university-affiliated hospital in Yaounde. It was a cross sectional descriptive study carried out a child neurology unit of the Yaounde Gynaeco-Obstetric and Paediatric Hospital (YGOPH) from August to December 2012
Summary
Neurological disorders in children are major concerns to parents, health workers and governments worldwide. This is due to their chronic nature and tendency to cause disability, handicaps and loss of potential of the affected child [1]. According to the World Health Organization (WHO), about 5% of the world’s children 14 years of age and under have a moderate to severe developmental disability, and up to 15% of children less than 5 years of age have a developmental disorder [6]. According to the World Health Organization, about 5% of children world-wide of 14year-old and under have a moderate to severe developmental disability, and up to 15% of children under 5-year-old are developmentally delayed. Prevention of perinatal hypoxic-ischemic encephalopathy risk factors needs to be reinforced
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