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Altitude Oxygen Calculator. Calculate the oxygen saturation from the pO2. The correct measurement of oxygen saturation at high altitude Example: if you have a Hgb of 9, despite a normal PO2 of 100 and SpO2 of 100%, your oxygen content will be only roughly half of normal (12mL/100mL blood vs 21mL/100mL blood). As altitude increased, SpO 2 decreased, especially at altitudes above 2500 m. The increase in altitude had a significant impact on SpO 2 measurements for all age groups. When the level goes below 75 mmHg, the condition is generally termed hypoxemia. The lower blood oxygen saturation at altitude causes a variety of adaptation reactions over a longer period of time: The number of erythrocytes increases (erythropoiesis) due to the release of the hormone EPO. Even at 3,000 feet, there is a 10% drop in barometric pressure, and therefore a 10% drop in the number of oxygen molecules for each breath you take. Although most common pulse oximeters track your blood oxygen from your finger, WHOOP implements the same technology to calculate SpO2 on your wrist. • Currently, there are 3 terms used for "oxygen saturation" (CLSI C-46, 2009) - hemoglobin oxygen saturation (SO. Each hemoglobin molecule contains four heme groups that can readily bind molecular oxygen present in the . Reference values for oxygen saturation from sea level to the highest ... Our data provide a reference range for expected SpO 2 measurements in people from 1 to 80 years Oxygen saturation is a vital parameter to define blood oxygen content and oxygen delivery. A normal, healthy person should have a value between 75 mmHg and 100 mmHg (these values are only true at sea level, as the values change with altitude as the partial pressure of oxygen changes). A normal ABG oxygen level for healthy lungs falls between 80 and 100 millimeters of mercury (mm Hg). 2. Dotables - Usgs New WHOOP 4.0 Metric: Blood Oxygen Monitoring A small device called a pulse oximeter (image 1) measures the oxygen saturation level and pulse/HR. The oximeter display shows the percentage of oxygen in your blood.