As previously mentioned, hypoxemia is low oxygen saturation in the blood. Symptoms of HypoxiaĪ normal SpO2 level is vital to maintaining the health of all tissue in the body.
Beyond this point, hypoxemia usually becomes hypoxia. Moderate hypoxemia results in fatigue, light-headedness, numbness and tingling of the extremities and nausea. The number and severity of these symptoms depend on how low the SpO2 levels are. There are several common symptoms of hypoxemia. Oxygen-saturated hemoglobin appears to be a brighter red to the naked eye than non-oxygen saturated hemoglobin, and this phenomenon allows the highly sensitive sensors of the pulse oximeter to detect minute variations in the blood and translate that into a reading. Pulse oximeters function by using light sensors to record how much blood is carrying oxygen and how much blood is not. Now that they have become relatively common in the home, many people are wondering how they work. However, they were mostly used by health care facilities until recently. Pulse oximeters have been in use for many years. How Pulse Oximeters Measure Oxygen in the Blood Want more like this? The ABCs of Pulse Oximetry CLINICAL MINUTE: O2 Saturation & the POC The Value of Home Respiratory Care The Future of Telehealth in Respiratory Care If it is less than 90 percent, you should see a doctor. This percentage should be between 94 percent and 100 percent, which indicates a healthy level of hemoglobin carrying oxygen through the blood. A percentage will be displayed on the screen. To use a pulse oximeter, simply place it on your finger. The body is usually able to adapt to these increases, provided that they are not too extreme. The oxygen needs of the body increase during times of high physiological stress (e.g., lifting weights or running) and at higher altitudes. The lungs take oxygen that has been inhaled and binds it to hemoglobin that then travels throughout the body with the payload of oxygen. The most important way that the body maintains healthy SpO2 levels is through breathing. Thankfully, the body usually does this by itself.
It is vital to maintain normal oxygen saturation levels in order to prevent hypoxia. How the Body Maintains Normal SpO2 levels This progression and the difference between the two conditions is important to understand. Hypoxemia (low levels of oxygen in the blood) can turn into hypoxia (low levels of oxygen in the tissue). There is a visible effect on the skin, known as cyanosis due to the blue (cyan) tint it takes on. In fact, very low levels of SpO2 can result in very serious symptoms. The body needs there to be a certain level of oxygen in the blood or it will not function as efficiently. SpO2, also known as oxygen saturation, is a measure of the amount of oxygen-carrying hemoglobin in the blood relative to the amount of hemoglobin not carrying oxygen.
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