Surgery – MCQ 13 – 60 yr old male undergoes TURP

60 yr old male undergoes TURP. After 3 days patient develops altered senstiveness and drowsiness. Most probable diagnosis is :
a) Hypernatremia
b) Hyponatremia
c) Stroke
d) Meningitis due to spinal anaesthesia

Correct answer : b) Hyponatremia