A nurse is providing teaching to assistive personnel about the application of wrist restraints to a client. Which of the following instructions should the nurse include in the teaching?

Secure the client's restraints with a square knot.

Attach the restraints to the fixed portion of the frame of the client's bed.

Remove the client's restraints every 2 hr.

Allow 1 fingerbreadth between the restraint and the client's wrists.