A nurse is reinforcing teaching with a client who is scheduled for an intravenous pyelogram (IVP). Which of the following statements should the nurse include in the teaching?

"High frequency sound waves will be used to identify renal system structures.”.

"After the procedure you will be encouraged to drink plenty of fluids.”.

"The procedure will be cancelled if the urinalysis indicates the presence of red blood cells.”.

"You will need to remain flat in bed for 4 hr following this procedure.”.