What is necessary for safe descent if cabin pressure is lost?

For safe descent after a loss of cabin pressure, it is crucial to descend to a lower altitude where the atmospheric pressure allows for sufficient oxygen availability. At higher altitudes, the reduced cabin pressure can cause hypoxia, which is a deficiency in the amount of oxygen reaching the tissues. By descending to a lower altitude, typically below 10,000 feet, pilots can ensure that they are operating in an environment where the air is breathable without the immediate need for supplemental oxygen, although it remains available if necessary, especially if they remain at altitudes above this threshold for an extended period. Implementing this procedure directly addresses the physiological impacts of a cabin pressure loss, emphasizing the importance of both altitude and safety measures in response to such an emergency.