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A prospective clinical study of patients with hypernatraemic dehydration
Insights
Hypernatraemic dehydration is a serious complication of childhood gastroenteritis, particularly in infants. Artificial milk feeds and nutritional status are contributing factors, necessitating increased water intake and public awareness.
Area of Science:
- Pediatrics
- Clinical Medicine
- Public Health
Background:
- Hypernatraemic dehydration is a severe condition in children, often linked to gastroenteritis.
- Infants constitute a significant majority of cases, highlighting their vulnerability.
Purpose of the Study:
- To investigate the etiological factors, clinical presentation, and outcomes of hypernatraemic dehydration in children.
- To identify risk factors and provide recommendations for prevention and management.
Main Methods:
- A prospective 3-year clinical study involving 158 children aged 2 weeks to 14 years with hypernatraemic dehydration (serum sodium ≥ 150 mmol/l).
- Analysis of etiological factors including feeding methods, nutritional status, and clinical dehydration severity.
- Comparison of neurological features and mortality rates between hypernatraemic and normo-/hyponatraemic groups.
Main Results:
- Hypernatraemic dehydration accounted for 13.7% of pediatric gastroenteritis admissions.
- Significant risk factors included artificial feeds, breast milk, nutritional status, and mild to moderate dehydration.
- Neurological features and mortality were significantly higher in hypernatraemic compared to normonatraemic patients.
Conclusions:
- Hypernatraemic dehydration is a serious, preventable complication of childhood gastroenteritis.
- Artificial milk feeds and nutritional status are key contributing factors; well-nourished infants are at higher risk.
- Recommendations include increased water intake during gastroenteritis and enhanced public education on the condition.
Abstract:
In a clinical prospective 3-year study of 158 children aged 2 weeks to 14 years with hypernatraemic dehydration (serum sodium 150 mmol/l or more), infants predominated (61.4%). The 158 children with hypernatraemia accounted for 13.7% of all children admitted with gastroenteritis over the same period, and significant aetiological factors included the use of artificial feeds, differences between the children with hypernatraemia and those with normo- or hyponatraemia, P < 0.001, P < 0.001, respectively; the use of breast milk, P < 0.001, P < 0.001, respectively; nutritional status, P < 0.001, P < 0.001, respectively; and clinical state of mild to moderate dehydration P < 0.001; P < 0.001, respectively; but not with patients considered severely dehydrated. There was also a significant difference between the presence of neurological features in hyper- and normonatraemic patients P < 0.001; in hyper- and hyponatraemic patients P < 0.05, and in mortality rate between hyper- and normonatraemic patients, P < 0.05 but not between hyper- and hyponatraemic patients. A history of refusal to feed or vomiting was obtained in 41 children (25.9%). The mean serum sodium was 155.5 mmol/l (range 150-189 mmol/l); mean serum urea 7.7 mmol/l (range 1-18.9 mmol/l). Hypernatraemic dehydration remains an important and serious complication of childhood gastroenteritis in our area of study. The use of artificial milk feeds is contributory, and well-nourished babies appear more at risk. We recommend more liberal water intake during gastroenteritis and the public should also be educated on and made more aware of this condition.