You should use the index (pointer) finger or middle finger for a pulse oximeter. These fingers are usually the most reliable for accurate readings.
- Optimal Probe Placement: Healthcare providers recommend clipping the pulse oximeter to the index or middle finger of either hand.
- Avoid using the thumb: The thumb has a different blood flow pattern that may affect the accuracy of the reading.
- Other fingers: While the index and middle fingers are preferred, you can also use the ring finger if needed.
Important: The finger you choose should be warm to the touch. It should feel snug but comfortable when the oximeter is attached.
