Oxygen/Nitrogen 15/85

What is this medication? Oxygen/Nitrogen 15/85 is a prescription medical gas mixture composed of fifteen percent oxygen and eighty-five percent nitrogen. Because this blend contains a lower concentration of oxygen than standard room air, which is approximately twenty-one percent, it is primarily used for diagnostic purposes. One common application is the hypoxic challenge test, also known as a fit-to-fly test. This procedure helps medical professionals evaluate how a patient with chronic respiratory or cardiovascular issues might react to the reduced oxygen environment of an airplane cabin during a flight.

Beyond diagnostic testing, this specific gas mixture is sometimes utilized in neonatal intensive care units to manage complex congenital heart conditions. In cases such as hypoplastic left heart syndrome, reducing the inhaled oxygen concentration can help regulate blood flow and pressure between the heart and lungs. This medication is exclusively administered in controlled healthcare environments by qualified clinicians who can provide continuous monitoring of a patient's oxygen levels and overall stability.