Why is it important to monitor my blood oxygen level? Why is it important to measure your current oxygen level? If your home SpO2 reading is less than 90%, call your healthcare provider. The “SpO2” reading on a pulse oximeter shows the percentage of oxygen in a person’s blood. Some people with chronic lung disease or sleep apnea may have normal levels of around 90%. 3.2 What are the 2 readings on a pulse oximeter?Ī normal oxygen level is usually 95% or more.2 Why is it important to measure your current oxygen level?.When pulse oximeters are used at home, it has usually been by people with known lung conditions, who may regularly monitor their blood oxygen saturation levels with guidance from their doctors. To assess individuals with sleep disorders such as sleep apnea.To assess the lung function of people with conditions that can cause reduction of blood oxygen levels, including COPD, asthma, acute respiratory distress syndrome (ARDS), anemia, pneumonia, lung cancer, cardiac arrest, and heart failure, among others.To monitor patients on certain medications that may reduce respiration and lung function.To monitor patients before, during, and after surgery, including during anesthesia.In clinical settings, they are routinely used in the following situations: Outside of general practice, pulse oximetry is most frequently used to monitor patients with lung and heart disorders, who are at risk of low levels of blood oxygen. In fact, pulse oximeters have become so widespread that blood oxygen saturation is often referred to as the “fifth vital sign,” a piece of data collected alongside four other measurements-temperature, blood pressure, pulse, and respiration rate-to gain insight into a person’s health status. In general practice, they are frequently used to quickly assess someone's general health, for instance, during a routine physical examination. Today, pulse oximeters are used across a broad range of health care settings. Thus, persistently low readings should be discussed with a doctor.” “Other lung-related issues, such as pneumonia and blood clots, can also result in low readings on pulse oximetry. “It’s important to remember that not all changes in pulse oximetry are related to COVID-19,” says Denyse Lutchmansingh, MD, a Yale Medicine pulmonologist. (Some people who are worried they may have-or fear contracting-COVID-19, have purchased pulse oximeters with the aim of monitoring their blood oxygen levels.) More recently, the spread of COVID-19, which can cause significant drops in blood oxygen saturation, has spurred a surge in the popularity of at-home pulse oximeters. If you have ever had a physical or visited a doctor for a medical procedure, you’ve had your blood oxygen saturation measured by a pulse oximeter. A pulse oximeter can quickly detect this drop in oxygen saturation, alerting people of the need for medical intervention. When the capacity of the lungs to transport oxygen into the blood is impaired, blood oxygen saturation declines, potentially putting our organs in danger. Our organs need a constant supply of oxygen to work properly. In turn, these capillaries send oxygen-rich blood to the heart, which then pumps it through arteries to the rest of the body. When we breathe in air, our lungs transmit oxygen into tiny blood vessels called capillaries. Oxygen saturation is a crucial measure of how well the lungs are working. But what, exactly, is it?īasically, pulse oximetry is a painless, noninvasive method of measuring the saturation of oxygen in a person’s blood. Pulse oximetry is a term that frequently appears online and in news reports in connection with COVID-19.
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