Which of the following is the specimen of choice for testing the pH, pO2, and pCO2 of the blood?

In order to perform the physical examination, the physician must do which of the following?

a. Obtain the patient's verbal permission before beginning the physical examination. b. Perform the examination according to the order of the 1997 single organ–system physical examination evidentiary checklist. c. Be sure to use the appropriate tools such as an otoscope and an ophthalmoscope. d. Physically interact with the patient, such as by touching or palpating, listening to or auscultation, looking at or inspecting different parts of the patient's body.

Your patient is a 40-year-old man who was burned when he spilled gasoline on his pants while he was standing near the pilot light of his hot-water heater. He has partial thickness burns from his feet to just above his knees, circumferentially around both legs. According to the Rules of Nines, the man burned ____ of his body surface

a. 9 percent b. 4.5 percent c. 36 percent d. 18 percent