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The fingertip pulse oximeter measures oxygen saturation of arterial blood by detecting and recording capillary pulse. It is intended for adult patients weighing more than 40 kg. This device is intended for non-invasive spot checks.
The fingertip pulse oximeter determines functional oxygen saturation of arterial hemoglobin (SpO2) by measuring the absorption of red and infrared light transmitted through perfused tissue. Changes in absorption caused by the pulsation of blood in the flow path are used to determine oxygen saturation and pulse rate.