What is the primary purpose of using a CPAP machine for the treatment of obstructive sleep apnea (OSA)?
To deliver a continuous flow of air pressure to keep the airway open
To reduce daytime sleepiness
To improve sleep quality
To promote weight loss
The Correct Answer is A
A. Delivering a continuous flow of air pressure to keep the airway open is correct. CPAP (Continuous Positive Airway Pressure) prevents airway collapse during sleep, allowing for uninterrupted breathing and oxygenation.
B. Reducing daytime sleepiness is a benefit of CPAP use, but it is not its primary purpose—it is a secondary effect of improved oxygenation and sleep continuity.
C. Improving sleep quality also occurs with CPAP therapy, but this is an outcome rather than the primary purpose.
D. Promoting weight loss is not the function of CPAP therapy, though weight loss can help reduce OSA severity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Nitroglycerin is used in the acute phase of an MI to relieve chest pain by dilating coronary arteries. However, after the initial phase, it is not the primary medication for managing pain and anxiety.
B. Morphine is administered after the initial acute phase to manage pain and anxiety. It reduces myocardial oxygen demand, decreases pain perception, and provides sedation, which can help lower stress levels.
C. Aspirin is given in the acute phase to prevent further clot formation but does not address pain and anxiety.
D. Oxygen is administered in the acute phase if the client is hypoxic, but routine oxygen therapy is no longer recommended unless needed.
Correct Answer is D
Explanation
A. Intermittent claudication with pallor is typically associated with peripheral artery disease (PAD) rather than myocardial infarction.
B. Jugular vein distention and dependent edema are signs of right-sided heart failure, which may develop after an MI but are not classic acute MI symptoms.
C. Mid-epigastric pain and heartburn can sometimes be confused with MI symptoms, but heartburn alone is not diagnostic of an MI.
D. Diaphoresis and cool clammy skin are correct. These symptoms occur due to sympathetic nervous system activation in response to cardiac ischemia, leading to vasoconstriction, sweating, and signs of impending shock.
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