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Electrolyte concentrations in serum and CSF following subarachnoid haemorrhage
1Department of Neurosurgery, Karolinska Hospital, Stockholm, Sweden.
Insights
Subarachnoid hemorrhage disrupts electrolyte balance, decreasing serum and cerebrospinal fluid (CSF) calcium and potassium. Further research is needed to link these electrolyte changes to delayed cerebral ischemia.
Area of Science:
- Neuroscience
- Clinical Chemistry
Background:
- Subarachnoid hemorrhage (SAH) is a critical neurological condition.
- Electrolyte disturbances are common but not fully understood in SAH patients.
Purpose of the Study:
- To investigate electrolyte (calcium, magnesium, potassium, sodium) levels in serum and CSF of SAH patients.
- To explore potential correlations between electrolyte derangements and SAH.
Main Methods:
- Analysis of serum and CSF samples from 14 SAH patients and 10 healthy controls.
- Quantification of calcium, magnesium, potassium, and sodium concentrations.
Main Results:
- Decreased serum and CSF calcium and potassium levels were observed in SAH patients.
- Serum and CSF magnesium and sodium levels remained unchanged compared to controls.
- Evidence of disturbed electrolyte homeostasis in the CSF of SAH patients.
Conclusions:
- SAH leads to significant alterations in CSF electrolyte composition, particularly calcium and potassium.
- The direct link between these specific electrolyte changes and the occurrence of delayed cerebral ischemia remains inconclusive.
Abstract:
Serum and CSF calcium, magnesium, potassium and sodium were analyzed in 14 patients suffering from subarachnoid haemorrhage and in 10 healthy controls. The calcium and potassium concentrations in serum and CSF were decreased while magnesium unchanged and sodium were unchanged. A deranged electrolyte homeostasis was thus detectable in the CSF following subarachnoid haemorrhage. It could not be established whether symptoms of delayed cerebral ischemia were related to CSF calcium and/or potassium levels.