A patient is described as having dyspnea. They are:
Flushed
Having difficulty breathing
Coughing up blood
Not breathing
The Correct Answer is B
A. Flushed: Not directly related to dyspnea.
B. Having difficulty breathing: Correct; dyspnea is defined as labored or difficult breathing.
C. Coughing up blood: This is hemoptysis, not dyspnea.
D. Not breathing: This is apnea, not dyspnea.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. is located within the pleural cavities: it is part of the larynx, not the lungs.
B. is innervated by the phrenic nerve: phrenic nerve innervates the diaphragm, not the epiglottis.
C. Prevents food and water from getting into the respiratory passages: it acts as a flap that closes the trachea during swallowing.
D. Is a tube that connects the pharynx and the middle ear: that is the Eustachian tube.
Correct Answer is A
Explanation
A. CO₂ levels: Correct; central chemoreceptors are most sensitive to carbon dioxide levels.
B. K⁺ levels: Affects cardiac function more than breathing.
C. O₂ levels: Peripheral chemoreceptors respond to oxygen, but CO₂ is the primary stimulus.
D. Na⁺ levels: Affects fluid balance, not breathing regulation directly.
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