A nurse is caring for a client with chronic obstructive pulmonary disease (COPD) receiving supplemental oxygen through a Venturi mask. What measure should the nurse employ when caring for this client?
A) Connect a humidifier at one end of the mask adapter.
B) Ensure that the windows of the mask remain exposed to room air.
C) Set flow rate required to keep the bag inflated one-third full.
D) Place a folded towel behind the client's neck to hyperextend it.
B
Feedback:
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.
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