Final answer:
The nurse should use surgical asepsis when inserting an indwelling urinary catheter to maintain a sterile environment and prevent infection.
Step-by-step explanation:
The nurse planning to insert an indwelling urinary catheter into a client should utilize surgical asepsis technique. This technique, also known as sterile technique, involves practices and protocols to maintain a sterile environment in order to prevent the risk of introducing pathogens that can lead to infection, such as sepsis. It is of utmost importance to carry out procedures with a high risk for contamination within a sterile field to maintain sterility and protect the patient.