What manifestation occurs due to air trapping and overinflation of the lungs in a person with chronic obstructive pulmonary disease (COPD)?
Barrel chest
Cyanosis
Clubbed fingers
Lack of appetite
The Correct Answer is A
Choice A reason: Air trapping in COPD, due to alveolar destruction and loss of elasticity, causes lung overinflation, increasing the anteroposterior chest diameter, resulting in a barrel chest. This is a direct consequence, making this the correct choice.
Choice B reason: Cyanosis occurs in COPD from hypoxia due to impaired gas exchange, not directly from air trapping. While common in advanced disease, it is not the primary manifestation of overinflation, making this incorrect.
Choice C reason: Clubbed fingers result from chronic hypoxia in COPD, not directly from air trapping. They develop over time due to tissue remodeling, not lung overinflation, making this choice incorrect.
Choice D reason: Lack of appetite is a systemic symptom in advanced COPD due to energy expenditure or hypoxia, not a direct result of air trapping or lung overinflation, making this choice incorrect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","E"]
Explanation
Choice A reason: Stabilizing the wrist with an elastic wrap supports the injured ligaments, reducing movement and further damage. It promotes healing by maintaining alignment, making this a correct action for acute wrist sprain management.
Choice B reason: Applying a warm pack increases blood flow, which may worsen swelling in an acute sprain. Cold therapy is recommended to reduce inflammation and pain, making this choice incorrect for acute sprain management.
Choice C reason: Elevating the wrist above the heart reduces swelling by decreasing hydrostatic pressure, allowing fluid to drain from the injury site. This minimizes edema, making this a correct action for acute wrist sprain.
Choice D reason: Frequent massage may aggravate an acute sprain by increasing inflammation and pain. Rest and immobilization are preferred to promote healing, making this choice incorrect for acute wrist sprain management.
Choice E reason: Resting the wrist prevents further injury to damaged ligaments, allowing healing and reducing inflammation. Avoiding strain is critical in acute sprains, making this a correct action for wrist sprain recovery.
Correct Answer is D
Explanation
Choice A reason: Graves’ disease, a form of hyperthyroidism, does not typically cause decreased calcium. It may lead to hypercalcemia due to increased bone resorption from elevated thyroid hormone levels, which enhance osteoclast activity, making decreased calcium an incorrect laboratory finding for this condition.
Choice B reason: Graves’ disease is characterized by increased thyroid hormone production, including elevated T4 due to autoimmune stimulation of the thyroid. Decreased T4 is associated with hypothyroidism, not hyperthyroidism, making this choice incorrect as it contradicts the pathophysiology of Graves’ disease.
Choice C reason: Increased TSH is seen in primary hypothyroidism, where the thyroid is underactive. In Graves’ disease, TSH is typically decreased due to negative feedback from elevated thyroid hormones (T3 and T4), making this choice incorrect for the expected laboratory profile.
Choice D reason: Graves’ disease causes hyperthyroidism, with increased production of thyroid hormones, including T3, due to autoantibodies stimulating TSH receptors. Elevated T3 levels drive metabolic symptoms like weight loss and tachycardia, making this the correct laboratory finding for Graves’ disease.
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