What action should the nurse take if a client with benign prostatic hypertrophy has a postvoid residual volume exceeding 100 mL?

When a client with benign prostatic hypertrophy (BPH) has a postvoid residual volume exceeding 100 mL, the appropriate action is to catheterize with an indwelling catheter if the residual volume is significantly high. This procedure helps relieve urinary retention caused by the enlarged prostate, which can obstruct the normal flow of urine. By inserting an indwelling catheter, the nurse ensures that the bladder is drained effectively, preventing complications such as bladder distention, infections, and discomfort for the client.

Indwelling catheterization provides a means to assess bladder function and keep the bladder appropriately emptied until further management can be determined. For clients with BPH, this approach is often necessary, especially in cases of significant retention, to prevent further complications.

In contrast, increasing fluid intake significantly may exacerbate the problem by leading to an even greater volume of urine that the client cannot adequately void. Administering a diuretic would also increase urine production, which is inappropriate in a situation where the client is already unable to void effectively. Encouraging more frequent voiding does not address the underlying issue of urinary retention and may not be effective for someone with a significant postvoid residual volume due to the obstruction caused by BPH. Thus, catheterization provides