A client has undergone a nephrectomy and insertion of a urethral catheter. As part of the nursing care plan, the nurse records the color of drainage from each tube and catheter. Which of the following...

A client has undergone a nephrectomy and insertion of a urethral catheter. As part of the nursing care plan, the nurse records the color of drainage from each tube and catheter. Which of the following is the best rationale for this nursing intervention?

1. Restore and maintain intravascular volume.

2. Provide a means for further comparison and evaluation.

3. Avoid interference with wound drainage.

4. Prevent pain related to obstruction.