Final answer:
For long-term pulse oximetry monitoring, the sensor should be moved every 2 to 4 hours to avoid skin-related complications and ensure accurate readings.
Step-by-step explanation:
When using pulse oximetry long-term, you should move the sensor to a new site every 2 to 4 hours. This practice helps to prevent potential complications such as skin breakdown, pressure ulcers, or inaccurate readings that can occur if the sensor is left in the same place for too long. Regularly relocating the sensor ensures better skin integrity and more reliable oximetry readings.