A 64-year-old female patient is admitted to the hospital with a stage 3 decubitus ulcer over her right ischial tuberosity. The patient's past medical history includes severe chronic obstructive pulmonary disease. What is the MOST appropriate position for the patient?
1) supine with pillows under the knees
2) prone with pillows under the knees
3) left side lying with pillows between the knees
4) right side lying with pillows between the knees