This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Venous Disorders, Subject name: Surgery
[{'content': "To prevent pressure ulcers, which intervention should be included in the plan of care? \nSelect and explain. \nA. Vigorously massage lotion into bony prominences, B. Post a turning schedule at the patient's bedside, C. Turn and re-position the patient at least once every 8 hours, D. Slide the patient, rather than lifting, when turning", 'role': 'user'}, {'content': 'Answer: B \nExplanation: The pathogenesis of pressure sores is local tissue pressure above that of perfusion pressure produces ischemic necrosis that is directly propoional to the duration and degree of pressure. Muscle and fat are more susceptible to pressure than skin. Bed-bound patient should be turned at least every 2 hours(not every 8 hours), with the wheelchair-bound patient being taught to lift themselves off their seat for 10 seconds every 10 minutes. A turning schedule with a signing sheet will help ensure that the patient gets turned and, thus, help prevent pressure ulcers.', 'role': 'assistant'}]