Related Experiment Video
Updated: Aug 7, 2026
Biochemical Measurement of Neonatal Hypoxia
Published on: August 24, 2011
Primary infantile hypomagnesaemia: report of two cases
1Department of Paediatrics, Toowoomba Base Hospital, Queensland, Australia.
Insights
Primary hypomagnesaemia, a rare metabolic disorder, can cause seizures in infants. Early diagnosis and magnesium supplementation are crucial for normal neurological development and preventing fatalities.
Area of Science:
- Pediatric Nephrology
- Clinical Genetics
- Biochemistry
Background:
- Primary hypomagnesaemia is a rare inherited disorder characterized by low serum magnesium levels.
- It can present with severe neurological symptoms, including seizures, in infancy.
Observation:
- This report details two siblings with primary hypomagnesaemia, both experiencing seizures.
- One sibling also presented with a cardiac arrhythmia, a previously unreported symptom.
Findings:
- Diagnosis involves identifying low serum magnesium and appropriate genetic testing.
- Effective management with magnesium supplementation normalizes biochemical parameters and ensures normal neurological development.
- Consanguinity in parents was noted in the presented cases.
Implications:
- Primary hypomagnesaemia must be considered in infants with seizures to prevent potentially fatal outcomes.
- Close monitoring of subsequent siblings, especially males, is recommended due to the genetic nature of the disorder.
Objective:
To present case reports of two siblings with primary hypomagnesaemia both presenting with seizures, and one also with a cardiac arrhythmia. To briefly review the pathophysiology, clinical features, diagnosis, management and genetics of this disorder.
Methodology:
Published literature reports of primary hypomagnesaemia and studies of hypomagnesaemia in humans. Reports of the clinical features and inheritance of primary hypomagnesaemia.
Results:
The information is descriptive of the pathophysiology, clinical features, diagnostic criteria, and management. Considered modes of inheritance are presented. Two cases of primary hypomagnesaemia in brothers of consanguineous parents are described. Cardiac arrhythmia at presentation has not previously been reported. Diagnosis and adequate magnesium supplementation controls the biochemical disorder and the neurological development is normal.
Conclusions:
Primary hypomagnesaemia should be considered in infants with seizures, as failure to identify this metabolic disorder can result in death. Subsequent siblings, particularly male, should be closely monitored.
Related Concept Videos
01:15Myasthenia Gravis: Diagnostic Tests
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...
01:26Rocky Mountain Spotted Fever