All electrolyte abnormalities are seen in immediate postoperative period, EXCEPT
Following surgery there is variable period of reduced excretion of sodium due to increased adrenocoical activity. This leads to hypernatremia therefore it is advisable not to administer large quantities of isotonic (a) saline solution. Sometimes postoperative hyponatremia too develops, as a result of too prolonged administration of sodium free solution.
Negative nitrogen balance
Hypokalemia
Glucose intolerance
Hyponatremia
General surgery