The nurse is reinforcing teaching for a patient who is using a continuous passive motion (CPM) machine. Which of these, if stated by the patient, indicates to the nurse correct understanding of its purpose?
To control pain
To relieve foot swelling
To strengthen leg muscles
To restore joint function
The Correct Answer is D
Choice A reason: While controlling pain is a benefit, it is not the primary purpose of a CPM machine.
Choice B reason: Relieving foot swelling is not the main function of a CPM machine.
Choice C reason: Strengthening leg muscles is not the direct purpose of a CPM machine; it is designed to move the joint without the patient's muscles being used.
Choice D reason: The primary purpose of a CPM machine is to restore joint function by moving the joint through a prescribed range of motion, often after surgery, to prevent stiffness and increase circulation.
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Related Questions
Correct Answer is D
Explanation
Choice A reason: Instructing the patient to wear constrictive clothing is incorrect, as it can worsen venous stasis ulcers by impeding blood flow.
Choice B reason: Encouraging the patient to keep legs in a dependent position is not recommended, as elevation helps in reducing venous pressure.
Choice C reason: Frequent ambulation is encouraged to promote blood circulation and prevent stasis.
Choice D reason: Applying compression stockings is a standard care practice to help reduce venous pressure and prevent fluid from pooling in the legs.
Correct Answer is A
Explanation
Choice A reason: Catatonia is characterized by symptoms such as extreme muscle rigidity, repetitive speech, and resistance to movement, which align with Lisa's presentation. It is often associated with other mental health conditions but can also be a standalone diagnosis.

Choice B reason: Disorganized schizophrenia is marked by disorganized thinking and behavior, inappropriate emotional responses, and erratic actions. While Lisa's symptoms could suggest a psychotic disorder, they do not specifically indicate disorganized schizophrenia.
Choice C reason: Schizotypal disorder involves eccentric behavior, odd beliefs, and difficulty forming close relationships. Lisa's symptoms do not align with the core characteristics of schizotypal disorder.
Choice D reason: Brief psychotic disorder is a short-term condition that includes delusions, hallucinations, and disorganized speech. Lisa's symptoms could be part of a brief psychotic episode, but the specific mention of muscle rigidity and resistance to movement is more indicative of catatonia.
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