Final answer:
When caring for a patient with a prescription for restraints, the PCT should assess and document the need for restraints before taking any action. Applying restraints as ordered, removing restraints when requested by the patient, and securing restraints tightly are not the appropriate actions to take.
Step-by-step explanation:
The PCT should take the action of assessing and documenting the need for restraints when caring for a patient who has a prescription for restraints. This is important to ensure that the use of restraints is justified and in accordance with the patient's care plan. Applying restraints as ordered may be necessary in some cases, but it should only be done after a thorough assessment.
Removing the restraints when the patient requests (option B) may not be appropriate as it can compromise the patient's safety. Securing the restraints tightly for effectiveness (option D) should be avoided as it can cause harm and restrict the patient's movement unnecessarily.