Q: Which electrolyte's deficiency is found to be associated with Posterior reversible encephalopathy syndrome (PRES)?

A) Sodium

B) Potassium
C) Magnesium
D) Phosphate
E) Calcium



Answer:  C

Posterior reversible encephalopathy syndrome (PRES), is characterized by headache, confusion, possible seizures and visual loss. It may occur in malignant hypertension and eclampsia. Also, frequently seen in transplant unit from Tacrolimus toxicity.  Diagnosis is made by MRI of the brain. Hypomagnesemia is found to be a contributing factor in PRES.