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Chapter: Medicine Study Notes : Endocrine and Electrolytes

Magnesium - Electrolytes

Stored 65% in bone, 35% in cells

Magnesium *

 

·        Stored 65% in bone, 35% in cells

·        Concentration generally follows Ca and K

·        Excess:

 

o  Usually in renal failure Þ treat renal failure not magnesium

o  Symptoms: neuromuscular depression ® ¯BP ® CNS depression

·        Deficiency:

 

o  Causes: severe diarrhoea, ketoacidosis, alcohol, TPN, with ¯Ca or ¯K (especially diuretics)

o  Symptoms: tetany (same as ¯Ca, ¯K gives weakness), fits, arrhythmia

·        Treatment: Mg salts either po or iv

 

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Medicine Study Notes : Endocrine and Electrolytes : Magnesium - Electrolytes |


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