Which venturi mask delivers precise oxygen concentrations?

The choice of a venturi mask with color-coded adapters is correct because this type of mask is specifically designed to deliver precise concentrations of oxygen to patients. The venturi mechanism employs different colored adapters, each calibrated to provide a specific flow of oxygen, which mixes with room air in predetermined ratios. This allows healthcare providers to closely control the percentage of oxygen the patient receives, making it highly effective for conditions where precise titration of oxygen is essential, such as in patients with COPD or other respiratory conditions.

In contrast, a venturi mask without adapters does not utilize the mechanism for adjusting oxygen delivery and would not provide the same precision in oxygen concentration. A non-rebreather mask, while capable of delivering high concentrations of oxygen, does not provide the same level of accuracy for specific percentages, as it typically delivers a high flow of oxygen without precise control of the exact concentrations. Similarly, a simple face mask does not offer the targeted delivery or specific oxygen concentrations that a venturi mask with adapters provides; rather, it allows for a more variable amount of oxygen to be inhaled based on the ambient air mixing with the supplemental oxygen.