An oximeter is a medical device used to measure the amount of oxygen in the blood and pulse rate. The device typically clips onto a finger, toe, or earlobe, producing light that passes through the skin and blood vessels to a sensor on the other side. Blood with more oxygen absorbs light differently than blood with less oxygen. By analyzing the absorption of light, the oximeter calculates the amount of oxygen in the blood, which is displayed as a percentage. This information helps healthcare providers monitor oxygen levels, especially in patients with respiratory or cardiovascular conditions. Oximeters are essential tools in medical settings for evaluating and managing oxygen levels and ensuring appropriate treatment for patients who may need extra oxygen or adjustments in their treatment plan.

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