What is the typical range of oxygen concentration delivered by an oxygen concentrator?

• A. 80% to 85% pure oxygen
• B. 90% to 95% pure oxygen
• C. 75% to 80% pure oxygen
• D. 100% pure oxygen

Answer: (B)

Oxygen concentrators are medical devices designed to provide patients with a continuous supply of oxygen by drawing in ambient air, which contains approximately 21% oxygen, and concentrating it to deliver a higher concentration to the patient. The typical range of oxygen concentration delivered by an oxygen concentrator is usually between 90% and 95% pure oxygen. This range is considered effective for therapeutic use, allowing patients with respiratory conditions to receive the necessary oxygen levels to manage their health properly.

While options discussing lower concentrations, such as 75% to 80% or 80% to 85%, do not align with the capabilities of most medical oxygen concentrators, it's important to note that a concentration of 100% pure oxygen is not typically delivered by these devices. Pure oxygen can pose serious risks, including oxygen toxicity, which is why concentrators are designed to deliver high but safe concentrations, not pure oxygen. Thus, the range of 90% to 95% is optimal and widely accepted in clinical settings.