Ch. 18 Fluids and Electrolytes

Question 1

Hypermagnesemia

1. What is the normal range for magnesium level?
2. What is the surgical cause?
3. What are the signs/symptoms?
4. Treatment?

Answer 1

Hypermagnesemia

1. What is the normal range for magnesium level? 1.5-2.5 mEq/L
2. What is the surgical cause? TPN, renal failure, IV over supplementation
3. What are the signs/symptoms? Respiratory failure, CNS depression, decreased deep tendon reflexes
4. Treatment? Calcium gluconate IV, insulin + glucose, dialysis, furosemide

Question 2

Hyponatremia

1. What may occur if you correct hyponatremia too quickly?
2. What is the most common cause of mild postop hyponatremia?

Answer 2

Hyponatremia

1. What may occur if you correct hyponatremia too quickly?
   
   1. Central Pontine Myelinolysis
      
      1. ​Confusion
      2. Spastic quadriplegia
      3. Horizontal gaze paralysis
2. What is the most common cause of mild postop hyponatremia? Fluid overload