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Hyperphosphataemia
Hypophosphataemia
Hyperphosphataemia
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Causes:
Factitious
Delay in separating red cells
Physiological
Neonates (up to 2.8 mmol/L) and infants (up to 1.8 mmol/L)
Increased Intake
Oral, Intravenous, vitamin D overdose
Release from Cells
Tissue destruction, starvation, acidosis, insulin
deficiency, malignancy
Decreased Renal Excretion
Renal failure (creatinine > 0.30 mmol/L),
hypoparathyroidism, growth hormone excess
Miscellaneous
Tumour calcinosis, hypothyroidism, post-menopause.
Hypophosphataemia
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Causes:
Decreased Intake
Starvation, malabsorption, vomiting, antacids (aluminium
hydroxide)
Increased Cell Uptake
High carbohydrate intake, insulin therapy, alkalosis
(especially respiratory)
Increased renal Excretion
Diuretics, magnesium depletion, fanconi syndrome,
hyperparathyroidism
Multiple Causes
Alcoholism, diabetes mellitus, burns, hyperalimentation
Other
Inherited causes, paracetamol overdose
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For further information please contact Dr Graham Jones on 8382-9100
gjones@stvincents.com.au |
