A nurse is caring for a client with chronic obstructive pulmonary disease (COPD) receiving ...

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The nurse should ensure that the mask windows remain exposed to room air to prevent occlusion of the oxygen flow, which would alter the desired oxygen concentration. A humidifier should not be used with a Venturi mask, because significant backpressure may activate the safety pressure valve on the humidifier, causing it to burst. The Venturi mask is a simple oxygen mask with no reservoir bag. It is a high-flow delivery system providing a consistent flow of oxygen. The nurse should set the flow meter to the manufacturer's recommended flow rate for the prescribed oxygen percentage. The client's neck should be hyperextended with a folded towel when performing tracheostomy, and not when using a Venturi mask.