South Taiwan University Institute of Mechanical Engineering

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Presentation transcript:

South Taiwan University Institute of Mechanical Engineering Pulse Oximeter & SpO2 Prof.： Yi-Chu Hsu Name : Yen Kuo-Wei Student ID : M9910218 Basic understanding of the pulse oximeter ― Konica Minolta Sensing, Inc. ―

OutLine Pulse Oximeter Monitoring blood oxygen saturation Purpose Of The Pulse Oximeter Pulse Oximeter Measure Oxygen Saturation Permissible Levels Of SpO2

Pulse Qximeter Oxygen binds to hemoglobin in red blood cells when moving through the lungs. Pulse oximeter uses two frequencies of light (red and infrared) to determine the percentage (%) of hemoglobin in the blood that is saturated with oxygen. The percentage is called blood oxygen saturation, or SpO2.

Monitoring Blood Oxygen Saturation Oxygen saturation is an indicator of oxygen transport in the body, and indicates if sufficient oxygen is being supplied to the body

Oxygen Saturation Oxygen saturation can be assessed by SaO2 or SpO2. SaO2 is oxygen saturation of arterial blood, while SpO2 is oxygen saturation as detected by the pulse oximeter. They are called arterial blood oxygen saturation and percutaneous oxygen saturation, respectively.

Purpose Of The Pulse Oximeter Determining the severity of a disease Blood gas analysis. Deciding on hospitalization of patients with chronic diseases when in acute phase. Vital sign monitoring of hospitalized patients. Management of patients receiving HOT.

Pulse Oximeter Measure Oxygen Saturation Bright Dark

Oxygen Saturation The graph above shows spectroscopic and absorptive properties (properties regarding which color is absorbed) of oxygenated hemoglobin (HbO2) and deoxygenated hemoglobin (Hb). Oxygenated hemoglobin absorbs more infrared light, while deoxygenated hemoglobin absorbs more red light.

Ppermissible Levels Of SpO2? The ideal range of oxygen saturation is 96 to 98%. However, since some patients may have lower levels, the person's normal levels should be determined. If the level is lower than normal, first measure another finger. If the level is 3 to 5% lower than the usual stable level, or lower than 90%, consult your personal physician.

Thank you for your attention.