The nurse is caring for a client with a continuous passive motion (CPM) machine after a total knee arthroplasty. An important safety measure the nurse should add to the plan of care is to
a. allow the client to use the machine 10-12 hours daily.
b. keep the head of the bed elevated at least 30 degrees.
c. position the client supine during CPM machine use.
d. remove the CPM machine during meals.
D
The CPM machine is used 6 to 8 hours a day with breaks for meals. During CPM the head of the bed is elevated no more than 15 degrees and usually is initially set at 0-degree extension and 10 to 40 degrees of flexion. Because of the low level of the head of the bed, eating poses a choking or aspiration hazard. Therefore the machine must be discontinued during meals so the client can sit upright to eat.
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