Ontario Paramedic Practice Exam

The purpose of an O2 saturation monitor, also known as a pulse oximeter, is to measure the level of oxygen in the patient's blood. This device works by using light to estimate how much oxygen is bound to hemoglobin in the red blood cells. The readings are expressed as a percentage, with normal values typically ranging from 95% to 100%. This information is crucial for healthcare providers, as it helps assess whether a patient is adequately oxygenated, which is especially important in emergencies or respiratory conditions.

While blood pressure, heart rate, and respiratory rate are vital signs that provide important information about a patient's health, these functions are not the primary purpose of an O2 saturation monitor. Each of those other parameters is measured with its specific devices or methods, making the O2 saturation monitor distinct and specialized for evaluating oxygen levels in the blood.