This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
Dilutional hyponatremia is a side effect of the following except- 
Select and explain. 
A. Octreotide, B. Vincristine, C. Mannitol, D. Carbamazepine
C: Mannitol
Answer: C: Mannitol 
Explanation: Mannitol, given as a hypeonic solution, is primarily used in the treatment of cerebral edema and glaucoma. Volume expansion and dilutional hyponatremia, without neurologic symptoms, can also be induced when isotonic mannitol is used as a flushing solution during transurethral resection of the prostate or bladder. Ref Davidson 23rd edition pg 367