A postsurgical client has been admitted to the unit with an indwelling urinary catheter that was ...

A postsurgical client has been admitted to the unit with an indwelling urinary catheter that was inserted in the operating room and which is scheduled for removal the following morning.
 
  How can the nurse best avoid backflow or urine into the client's bladder and subsequent infection? A) Ensure that the collection bag is always lower than the client's bladder.
  B) Irrigate the catheter if clots or pus are visible in the tubing or collection bag.
  C) Ensure that the contents of the collection bag do not exceed 50 of capacity.
  D) Position the client in a high Fowler's position unless contraindicated.