A nurse is caring for a client who has not voided for 8 hr following the removal of an indwelling urinary catheter. Which of the following actions should be the nurse take first?

A. Increase fluids: Encouraging oral fluids can promote urination, but this intervention is not the priority until the nurse determines whether the bladder is actually retaining urine or the client is simply producing little urine. B. Perform a bladder scan: The priority action is to assess the bladder for urinary retention using a noninvasive bladder scan. This determines if the bladder is full and guides the next appropriate intervention. C. Insert a straight catheter: Catheterization is invasive and carries a risk of infection. It should only be performed after confirming urinary retention through assessment such as a bladder scan. D. Provide assistance to bathroom: Helping the client to the bathroom may be appropriate, but without first assessing for retention, the nurse may overlook urinary obstruction or an overdistended bladder.