Hypoxemia is a medical condition characterized by low levels of oxygen in the blood. It can occur due to various factors, including respiratory diseases, high altitudes, or problems with the heart. Symptoms may include shortness of breath, rapid heartbeat, and confusion, as the body struggles to get enough oxygen to function properly. Diagnosis of hypoxemia typically involves measuring blood oxygen levels using a pulse oximeter or arterial blood gas test. Treatment options may include supplemental oxygen therapy or addressing the underlying cause, such as managing a lung disease or improving circulation. Early detection and intervention are crucial for preventing complications.