The triangulation of pulse oximetry results includes which three elements?

• A. device type, patient name, time
• B. diagnosis, vitals, signs/symptoms
• C. oxygen delivery method, flow rate, FiO2
• D. color, size, brand

Answer: (B)

Interpreting pulse oximetry results relies on three pieces of information working together: the patient’s diagnosis or clinical problem, the vital signs that show current status, and the signs and symptoms you can observe. The diagnosis tells you what’s likely driving the oxygen needs and what complications you should watch for. Vital signs provide objective data—SpO2, heart rate, respiratory rate, blood pressure—that indicate how stable or distressed the patient is right now. Signs and symptoms—such as increased work of breathing, cyanosis, fatigue, or confusion—reflect how the patient is actually tolerating their oxygenation and whether tissue needs are met. Putting these together helps you decide if the current oxygen therapy is appropriate or needs adjustment.

The other options don’t fit this interpretive approach: device type, patient name, and time are administrative details and don’t inform physiological status. Oxygen delivery method, flow rate, and FiO2 describe how you administer oxygen, not how you interpret the current data in context. Color, size, and brand are irrelevant to clinical interpretation.