Chronic Renal Failure & Tertiary Hyperparathyroidism
- Elevated creatinine, urea & osmolality.
- Hyperkalaemia & metabolic acidosis.
- 3°hyperparathyroidism → ↑ [PO4].[Ca++] ≈ 7.3
→ ectopic calcification ∝ product > 6.0
- Hypercalcaemia usually → nephrogenic DI & ↑Na+
→ excess H2O
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