60 yr old male undergoes TURP. After 3 days patient develops altered sensitiveness and drowsiness. Most probable diagnosis is

Water intoxication (also known as TURP syndrome)The absorption of water into the circulation at the time of transurethral resection can give rise to congestive cardiac failure, hyponatraemia and haemolysis. Accompanying this, there is frequently confusion and other cerebral events often mimicking a stroke. The incidence of this condition has been reduced since the introduction of isotonic glycine for performing the resections and the use of isotonic saline for postoperative irrigation.