Certified Hyperbaric Technologist Practice Test

A normal reading on a pulse oximeter typically falls within the range of 95% to 100%. A reading of 98% indicates that the hemoglobin in the blood is carrying a sufficient amount of oxygen, which is essential for normal physiological function. When blood oxygen levels are within this range, it suggests that the respiratory system is functioning effectively, delivering oxygen to the body's tissues efficiently. Readings below 95% may suggest that there are issues with oxygenation, and immediate assessment would be necessary to determine the underlying cause. While readings of 90% and 92% can signal a risk for hypoxemia, they are considered lower than the normal range. A reading of 100% indicates maximum oxygen binding, but while it's possible, it is less common in clinical practice due to the natural physiological variations in oxygen saturation. Thus, a reading of 98% is seen as a standard and healthy value.