Final answer:
The first step to remove an indwelling catheter is to wash hands and put on gloves.
Step-by-step explanation:
The first step to remove an indwelling catheter is to wash hands and put on gloves. This is important to prevent the spread of infection and maintain a sterile environment. Once the nurse has washed their hands and put on gloves, they can proceed with the removal of the indwelling catheter.