Several factors can affect the accuracy of pulse oximetry readings:
Poor Circulation: Cold extremities or poor blood flow can give inaccurate readings. Movement: Excessive movement can interfere with the device's ability to measure accurately. Nail Polish: Dark nail polish or artificial nails can obstruct the light passing through the finger. Skin Pigmentation: Variations in skin pigmentation may affect readings. External Light: Bright light sources can interfere with the sensor's accuracy.
