Which device is used to monitor oxygen saturation during sleep studies?

Which device is used to monitor oxygen saturation during sleep studies?

• A. Thermistor
• B. Oximeter
• C. Piezo-electric crystal band
• D. Actigraph

Answer: (B)

Pulse oximetry is used to monitor oxygen saturation during sleep studies. The oximeter uses a sensor (often on a finger or earlobe) to measure how much oxygenated hemoglobin is in the blood by transmitting light and detecting its absorption. This provides continuous SpO2 readings and pulse rate, allowing detection of nocturnal desaturation events that commonly accompany sleep-disordered breathing. The other devices serve different purposes: a thermistor tracks nasal/airflow-related temperature changes to estimate breathing, a piezo-electric band measures chest or abdominal movement to gauge respiratory effort, and an actigraph records movement to infer sleep-wake patterns.

Pulse oximetry is used to monitor oxygen saturation during sleep studies. The oximeter uses a sensor (often on a finger or earlobe) to measure how much oxygenated hemoglobin is in the blood by transmitting light and detecting its absorption. This provides continuous SpO2 readings and pulse rate, allowing detection of nocturnal desaturation events that commonly accompany sleep-disordered breathing. The other devices serve different purposes: a thermistor tracks nasal/airflow-related temperature changes to estimate breathing, a piezo-electric band measures chest or abdominal movement to gauge respiratory effort, and an actigraph records movement to infer sleep-wake patterns.