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What is the rationale for using continuous positive air pressure (CPAP) to treat sleep apnea?

A.

Positive air pressure holds the mouth open.

B.

Negative pressure holds airways closed.

C.

Delivery of oxygen facilitates expiratory effort.

D.

Alternating waves of air stimulate breathing.

Answer and Explanation

The Correct Answer is D

The correct answer is choice D, alternating waves of air stimulate breathing. CPAP works by delivering a continuous stream of pressurized air through a mask, which is worn over the nose or nose and mouth while sleeping. This air pressure acts like a splint, holding the airway open and preventing it from collapsing during sleep. The alternating waves of air delivered by the CPAP machine help stimulate breathing, keeping the airway open and reducing the number of breathing pauses that occur during sleep. CPAP is a highly effective treatment for obstructive sleep apnea, a condition in which the airway becomes blocked during sleep, leading to breathing pauses and interrupted sleep. By keeping the airway open and stimulating breathing, CPAP helps to improve sleep quality, reduce daytime sleepiness, and improve overall health outcomes in people with sleep apnea.


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Related Questions

Correct Answer is ["A","B","C","D","E"]

Explanation

The correct answer is choices A, B, C, D, and E.

Hypoxia occurs when there is inadequate oxygen supply to the body's tissues. Signs of hypoxia can vary depending on the severity of the condition. The following signs can indicate hypoxia:

  • Increased respiratory rate - Hypoxia can cause an increased respiratory rate as the body tries to increase oxygen levels in the blood.
  • Confusion - Hypoxia can affect cognitive function, leading to confusion.
  • Cyanosis - Hypoxia can cause a blue or purple discoloration of the skin, lips, or nail beds due to the lack of oxygen.
  • Restlessness - Hypoxia can cause restlessness or agitation.
  • Dyspnea - Hypoxia can cause difficulty breathing, also known as dyspnea.

  • Bradycardia - Bradycardia, or a slow heart rate, is not typically a direct sign of hypoxia. Hypoxia often leads to tachycardia (increased heart rate) as the body tries to compensate for low oxygen levels.

  • Hypotension - While severe hypoxia can eventually lead to changes in blood pressure, hypotension (low blood pressure) is not a primary sign of hypoxia. Typically, hypoxia might cause hypertension or have no immediate impact on blood pressure.

  • Nausea and Vomiting - While nausea and vomiting can be related to various conditions, they are not specific signs of hypoxia. These symptoms might occur due to other issues or as a secondary effect in some cases, but they are not primary indicators of hypoxia.

Correct Answer is A

Explanation

The correct answer is choice A: "The JP drain uses negative suction to drain fluid from the wound." The purpose of the Jackson-Pratt drain is to remove excess fluid or blood from the surgical site. This drain uses a bulb-like container that creates negative pressure or suction, which allows the fluid to be removed from the wound into the container. It is important to maintain negative pressure to ensure that the drain is functioning properly. The nurse should also instruct the client on how to monitor the drainage and how often to empty the container, and to report any changes in the amount, color, or odor of the fluid to the healthcare provider.

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