Which documentation entry includes both the site and the mode of oxygen saturation measurement?

• A. SaO2 98% room air
• B. SaO2 98% left index finger
• C. SaO2 98% on finger, room air
• D. SaO2 98% right index finger, room air

Answer: (D)

Documenting oxygen saturation correctly requires including both where the measurement was taken (the site) and under what condition the reading was obtained (the mode, such as room air vs oxygen therapy). The best entry specifies both: SaO2 98% right index finger, room air. It tells you exactly which finger the sensor was placed on and that the patient is breathing room air, with no supplemental oxygen. The other options miss one piece: one lacks the site, another lists a site but omits the room air condition, and another uses vague phrasing instead of naming a precise location. This combination of precise site and the measurement condition makes the selected entry the most complete.