Brian, a 58-year-old patient, is noted to have a decreased lung compliance during his pulmonary function tests. What does this suggest about the physiology of his respiration?

Diffusion of gases will be enhanced

Pulmonary blood supply is compromised

Ventilation is likely efficient

Work of breathing will be increased

Answer and Explanation

The Correct Answer is D

A.   Decreased lung compliance doesn't directly enhance gas diffusion; it may impair it due to decreased lung expansion.

B.   Decreased lung compliance doesn't necessarily indicate compromised pulmonary blood supply; it's more related to the lung's ability to expand and contract.
C.   Decreased lung compliance suggests that ventilation may be impaired because the lungs are less able to expand and contract effectively.
D.   Decreased lung compliance means the lungs are stiffer, requiring more effort to breathe, thus increasing the work of breathing.

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Correct Answer is B

Explanation

A. Reflex bronchoconstriction is a defense mechanism that helps protect the airway during exposure to irritants or allergens, but it wouldn't typically lead to irritation and burning sensation.
B. The mucociliary clearance system, which helps remove particles and pathogens from the airway by moving mucus upward via ciliary action, is likely compromised in Emily, leading to accumulation of irritants and subsequent symptoms.
C. Filtration of air occurs primarily in the upper respiratory tract and is not directly related to irritation and burning sensation in the airway.
D. Alveolar macrophages are primarily involved in defense against pathogens in the alveoli of the lungs and are not directly related to irritation and burning sensation in the airway.

A. Release of enzymes that irritate the tissues. B. Edema compressing nerve endings. C. Heat generated during the process of lysis. D. Accumulation of acidic waste from dying cells.

Correct Answer is B

Explanation

A. This mechanism is more relevant in conditions like pancreatitis or tissue injury involving enzyme release, not specifically in traumatic inflammation.
B. Inflammation leads to increased vascular permeability and fluid accumulation (edema), which can compress nerve endings and cause pain.
C. Lysis refers to the breakdown of cells, which may release heat, but this is not typically a significant factor in localized inflammation from trauma.
D. Acidic waste accumulation occurs in cell death processes like necrosis, but it's not the primary mechanism causing pain in traumatic inflammation.

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Brian, a 58-year-old patient, is noted to have a decreased lung compliance during his pulmonary function tests. What does this suggest about the physiology of his respiration?

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Naxlex Comprehensive Predictor Exams

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