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Epidemiology of infantile hydrocephalus in Saudi Arabia: birth prevalence and associated factors
W R Murshid1, J S Jarallah, M I Dad
1Division of Neurosurgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia. wmurshid@ksu.edu.sa
Insights
Infantile hydrocephalus, a CNS disorder, showed a higher birth prevalence in Saudi Arabia than in developed nations. Associated factors include family history, low birth weight, and low Apgar scores, with significant early mortality.
Area of Science:
- Pediatrics
- Neurology
- Epidemiology
Background:
- Hydrocephalus is a prevalent pediatric central nervous system disorder.
- Epidemiological data, especially from developing regions, are scarce.
- This study addresses the need for data on infantile hydrocephalus prevalence, risk factors, and outcomes.
Purpose of the Study:
- To determine the birth prevalence of infantile hydrocephalus.
- To identify associated antenatal, natal, and postnatal factors.
- To assess the early mortality rate in affected infants.
Main Methods:
- A prospective study conducted over one year in Saudi Arabia.
- Included all hydrocephalus cases diagnosed within 28 days of life (excluding neural tube defects and brain tumors).
- Compared 26 cases with 104 controls, collecting data via maternal interviews.
Main Results:
- Identified 26 cases, yielding a birth prevalence of 1.6 per 1,000 live births.
- Associated factors included multiple pregnancies (81%), consanguinity (73%), preterm birth (62%), low birth weight (69%), and low Apgar scores (69%).
- The 6-month mortality rate was 23%.
Conclusions:
- Infantile hydrocephalus birth prevalence in this Saudi Arabian cohort exceeds that in developed countries.
- Positive family history, low birth weight, low Apgar scores, and abdominal delivery are significant associated factors.
- Mortality in the first six months is notably higher in infants with hydrocephalus.
Introduction:
Hydrocephalus is a common central nervous system disorder in children. In spite of its importance, it has not been subjected to sufficient epidemiological studies, particularly in the developing countries. The aim of this study was to provide information from a representative series of newly diagnosed cases of infantile hydrocephalus on the birth prevalence, associated factors and mortality.
Methodology:
A prospective study was conducted over a 1-year period from April 1996 to March 1997 in the city of Al-Madinah Al-Munawarah, Saudi Arabia. Except for neural tube defects and brain tumors, all cases of hydrocephalus diagnosed within the first 28 days of life were included. A control group of 104 subjects was studied for comparison. Information about antenatal, natal and early postnatal periods were obtained by interviewing the mothers of the newborns.
Results:
During the study period, 26 cases of infantile hydrocephalus were detected. The birth prevalence was 1. 6 per 1,000 live births. There was no sex preponderance as the male to female ratio was 1.2:1. Multiple pregnancies were detected in 21 (81%) cases. Nineteen (73%) cases were the product of consanguineous parent and 4 patients had a positive family history of hydrocephalus. The number of preterm infants was 16 (62%). The number of low birth weights (less than 2,500 g) was 18 (69%). An Apgar score of less than 8 occurred in 18 (69%) cases. The mode of delivery was vaginal in 15 (58%) women. The 6 months mortality rate was 23% (6 infants).
Conclusion:
The birth prevalence of infantile hydrocephalus in this study was significantly higher than in the developed countries. A positive family history of hydrocephalus, low birth weight, low Apgar score and abdominal delivery were found to be associated factors. The mortality rate in the first 6 months of life was significantly higher in hydrocephalus infants than in controls.
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