Aclient returned from surgery eight hours ago and has not voided. which action should the nurse take first?

The first action nurse should take is to evaluate the bladder for distention. in the event the bladder is distended nurse should provide the patient with privacy. i.e nurse can walk with patient to the bathroom. to avoid the urinary tract infection, the process of catheterization should be the last resort after all the other options available have failed.   

Processes above and be sure to mention the movement of electrons and energy as the carbon atom moves from one reaction to another.