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Related Subjects: |Calcium Physiology |Magnesium Physiology |Calcitonin |Hypocalcaemia |Hypercalcaemia |Hypomagnesaemia |Hypermagnesaemia |Primary Hyperparathyroidism |Familial hypocalciuric hypercalcaemia (FHH) |Sarcoidosis
Severe hypermagnesaemia with symptoms |
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High values of serum magnesium can induce cardiorespiratory arrest and coma.
Approximate Serum magnesium concentration (mmol/L) | Features of hypermagnesaemia |
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2 - 3.5 mmol/L |
Flushing, ECG changes, nausea, vomiting |
4 - 5 mmol/L | Drowsiness, slurred speech, hypotension, absent deep tendon reflexes, dizziness |
>6 mmol/L |
Muscle paralysis, respiratory depression, coma |
>8 mmol/L |
Cardiac arrest |