Continuous positive airway pressure (CPAP) can be provided through an oxygen mask to improve oxygenation in hypoxic patients by which of the following methods?A. The mask provides 100% oxygen to the client.
A. The mask provides 100% oxygen to the client.
B. The mask provides continuous air that the client can breathe.
C. The mask pressurizes at the end of expiration to open collapsed alveoli.
D. The mask provides pressurized oxygen so the client can breathe more easily.
Correct Answer: D. The mask provides pressurized oxygen so the client can breathe more easily.
The mask provides pressurized oxygen continuously through both inspiration and expiration. Continuous positive airway pressure (CPAP) is a type of positive airway pressure that is used to deliver a set pressure to the airways that is maintained throughout the respiratory cycle, during both inspiration and expiration.
Option A: The mask can be set to deliver any amount of oxygen needed. CPAP therapy utilizes machines specifically designed to deliver a flow of constant pressure. Some CPAP machines have other features as well, such as heated humidifiers. Components of a CPAP machine include an interface for delivering CPAP.
Option B: By providing the client with pressurized oxygen, the client has less resistance to overcome in taking his next breath, making it easier to breathe. Continuous positive airway pressure (CPAP) is a type of positive airway pressure, where the air flow is introduced into the airways to maintain a continuous pressure to constantly stent the airways open, in people who are breathing spontaneously.
Option C: Pressurized oxygen delivered at the end of expiration is positive end-expiratory pressure (PEEP), not continuous positive airway pressure. Positive end-expiratory pressure (PEEP) is the pressure in the alveoli above atmospheric pressure at the end of expiration. CPAP is a way of delivering PEEP but also maintains the set pressure throughout the respiratory cycle, during both inspiration and expiration.
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