The nurse clarifies that the cough mechanism is stimulated when:

more than 250 mL of air moves in and out of the lungs with each breath

foreign substances are propelled by the cilia toward the respiratory tract

dehumidified air enters the upper airway passages

the blood transports carbon dioxide to the lungs

Answer and Explanation

The Correct Answer is B

A. More than 250 mL of air moves in and out of the lungs with each breath: This describes tidal volume but does not directly stimulate the cough mechanism.
B. Foreign substances are propelled by the cilia toward the respiratory tract: Irritation by foreign particles stimulates the cough reflex to clear the airways.
C. Dehumidified air enters the upper airway passages: Dry air can cause airway irritation but does not consistently trigger a cough reflex.
D. The blood transports carbon dioxide to the lungs: This describes gas exchange, which does not directly relate to triggering the cough mechanism.

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Correct Answer is C

Explanation

A. Deliver two quick short breaths into the patient's airway: Rescue breaths are not performed until airway patency and circulation are assessed.
B. Tilt the head by placing one hand on the forehead and lift the chin: This technique opens the airway but should follow calling for help and basic assessment.
C. Call for help or, if there is assistance, have that person get help: Activating emergency services is critical for obtaining additional life-saving resources.
D. Position the fingers over the carotid artery to feel for a pulse: Pulse checks come after calling for help in the Basic Life Support (BLS) algorithm.

A. 25 and 50 mm Hg B. 80 and 120 mm Hg C. 120 and 180 mm Hg D. 50 and 75 mm Hg

Correct Answer is B

Explanation

A. 25 and 50 mm Hg: This pressure is insufficient to effectively clear oral secretions.
B. 80 and 120 mm Hg: Recommended for safe and effective oral suctioning to prevent mucosal trauma while adequately clearing secretions.
C. 120 and 180 mm Hg: Excessive pressure can cause mucosal damage and trauma.
D. 50 and 75 mm Hg: This pressure is too low to be effective for adult oral suctioning.

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The nurse clarifies that the cough mechanism is stimulated when:

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is B

Explanation

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