Selma’s doctor asks her to sit in a body box to determine her lung volume. Selma is told to breathe in and out, move around, and even make different noises. At the end of the test, the doctor tells her that she has a standard lung volume. What did the doctor measure to determine Selma’s lung volume?

You are assessing an 86-year-old postoperative patient who has an unexpressive, stoic demeanor. when you enter the room, the patient is curled into the fetal position and your assessment reveals that his vital signs are elevated and he is diaphoretic. you ask the patient what his pain level is on a 0-to-10 scale that you explained to the patient prior to surgery. the patient indicates a pain level of “three or so.” you review your pain-management orders and find that all medications are ordered prn. how would you treat this patient's pain?