What does hypoxia refer to?

Hypoxia refers to a condition in which there is a lack of oxygen in the tissues of the body. This deficiency can result from various factors, such as respiratory issues, anemia, or poor circulation, and can lead to serious physiological consequences. Understanding hypoxia is crucial in the context of dental anesthesia and patient care, as maintaining adequate oxygen levels during procedures is essential for patient safety and optimal outcomes.

The other options describe different medical conditions: excess oxygen would be known as hyperoxia, high blood pressure is referred to as hypertension, and low blood sugar is termed hypoglycemia. Each of these has distinct implications and does not relate directly to the oxygen levels in the tissues, which is the primary concern in hypoxia.