Final answer:
Percent saturation is measured using a pulse oximeter, which determines the oxygen saturation level in the blood. 'Preductal SpO2 at 2 min' refers to the measurement of oxygen saturation from a specific location 2 minutes after a certain event or procedure.
Step-by-step explanation:
Percent saturation is normally monitored using a device known as a pulse oximeter, which measures the oxygen saturation level in the blood. The level of oxygen saturation is represented as SpO2, or the percentage of hemoglobin that is bound to oxygen. In the context of the question, 'Preductal SpO2 at 2 min' refers to the measurement of oxygen saturation in the blood taken from a specific location (referred to as preductal) at 2 minutes after a certain event or procedure. It is important to note that without further context, it is not possible to determine what event or procedure is being referred to.
The term preductal SpO2 refers to the measurement of oxygen saturation in the blood before it has passed through the lungs (preductal), typically done using a pulse oximeter within the first few minutes after birth. A pulse oximeter is a non-invasive device that estimates the percentage of oxygen saturation of hemoglobin in the blood by sending two wavelengths of light, red and infrared, through a body part such as a finger and measuring the light absorption with a photodetector. This device provides readings that, in a normal range, fall between 95 and 100 percent. Lower percentages indicate hypoxemia, or low blood oxygen, which is a critical concern in newborns and is assessed through Apgar scoring at 1 minute and 5 minutes after birth, evaluating skin color, heart rate, reflexes, muscle tone, and respiration. A low score, particularly in heart rate and respiration at the 2-minute mark, may signal the need for medical intervention.