pulsoksymetria

Pulsoksymetria is a non-invasive medical procedure used to measure a person's oxygen saturation level in the blood. It also measures pulse rate. A small device, called a pulse oximeter, is typically clipped onto a finger, toe, earlobe, or forehead. The device works by shining a light through the tissue and measuring how much light is absorbed by hemoglobin, the protein in red blood cells that carries oxygen. Oxygenated hemoglobin absorbs light differently than deoxygenated hemoglobin, allowing the device to calculate the percentage of blood that is saturated with oxygen. This percentage is known as the SpO2. Normal SpO2 levels are typically between 95% and 100%.

Pulse oximetry is commonly used in various medical settings, including hospitals, emergency rooms, and during surgery. It is also used by individuals with chronic respiratory conditions such as asthma, COPD, or pneumonia, as well as by athletes or individuals at high altitudes to monitor oxygen levels. The device is also frequently used in home healthcare settings.

The results from a pulse oximeter are generally reliable, but certain factors can affect accuracy. These include poor circulation, cold extremities, nail polish, dark skin pigmentation, and patient movement. A low oxygen saturation reading can indicate a problem with lung function or circulation and may require further medical investigation. Conversely, a consistently high reading is generally not a cause for concern, though it's always best to discuss your readings with a healthcare professional.