Magnesium Metabolism

Question 1

Normal serum magnesium

Answer 1

1.5-2.4

Direct effect on peripheral arteries

Question 2

Hypomagnesemia

Answer 2

Serum magnesium <1.5

Question 3

Cause of hypomagnesemia

Answer 3

Alchoholism

Disruption in bowel

Diabetic ketoacidosis

Parenteral nutrition

Question 4

Clinical manifestation of hypomagnesemia

Answer 4

Neuromascular irritability
+chvostek and trousseau sign
Ech changes-enlonged qrs, st segmwnt depression, arrhythmia

Question 5

Treatment of hypomagnesemi

Answer 5

Give magnesium
Calcium gluconate if accompanied by hypocalcemia
Check for dysphagia so soft food given
Monitor vital signs
Foods rich in magnesium- chocolates,seafood,nuts legumes green leafy

Question 6

Hypermagnesemia causes

Answer 6

Renal failuite
Untreated DKA
Excessive use of antacids and laxatives

Question 7

Hypermagnesemia

Answer 7

Serum magnesium>2.4

Question 8

Manifestation of hypermagnesemia

Answer 8

Flushed face
Mild hypotension
Cardiac arrest/heart block
Muscle weakness
Lethargy 
Nausea comiting

Question 9

Intervention hypermagnesemia

Answer 9

Monitor mg level 
Respiratory rate
Cardiac rhthm
Increase fluids
Iv calcium