Estimation of antemortem serum electrolytes and urea ...
|Title||Estimation of antemortem serum electrolytes and urea concentrations from vitreous humor collected postmortem|
|Author(s)||I. Wilkie, J. Bellamy|
|Journal||Canadian journal of comparative medicine.Revue canadienne de medecine comparee|
|Abstract||Electrolyte and urea levels of vitreous humor collected from bovine eyes at various times postmortem, were compared with serum levels in the same animals. Provided the vitreous humor was filtered immediately after collection, measured levels of total calcium (Ca), potassium ions (K+), sodium ions (Na+) and urea nitrogen were very consistent. For 24 hours postmortem the concentrations of Ca, Na+ and urea nitrogen remained stable, while K+ increased to approximately 55% more than the immediate postmortem level. A small study using anesthetized dogs indicated that urea nitrogen levels of vitreous humor take several hours to equilibrate with elevated blood levels. Analysis of vitreous humor may be a useful adjunct to diagnosis in cases where antemortem clinical chemistry is absent or inadequate.|
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