What is the maximum percentage of nitrous oxide that can be delivered at any time?

The maximum percentage of nitrous oxide that can be safely delivered at any time is typically around 70%. This threshold is based on safety data and the physiological effects of nitrous oxide on the body. While nitrous oxide can be effective as an anesthetic at higher concentrations, exceeding this level increases the risk of adverse effects such as hypoxia.

Using a concentration above this limit could also lead to diminished oxygen delivery to tissues, especially if not combined with an adequate supply of oxygen. In clinical practice, nitrous oxide is usually administered in a mixture with oxygen to ensure patient safety, and dosing is carefully monitored to prevent complications. Thus, keeping the concentration at or below 70% is a common practice to maintain efficacy while minimizing potential risks associated with higher concentrations.