The Nurse Is Applying a Continuous Passive Motion (CPM)machine to the Patient's

The nurse is applying a continuous passive motion (CPM) machine to the patient's leg.To do so,she must: (Select all that apply. )

A) provide analgesia 1 hour before starting the CPM.
B) stop the CPM when in extension and place a sheepskin on the machine.
C) align the patient's joint with the CPM's mechanical joint.
D) secure the patient's extremity tightly with Velcro straps.