Localized hypoxia occurs in rheumatoid arthritis because of:
Joint immobilization
Vasculitis
Blockage of veins resulting in decrease oxygen delivery
Release of synovial enzymes
The Correct Answer is B
A. Joint immobilization may contribute to overall dysfunction but is not the primary cause of localized hypoxia in rheumatoid arthritis.
B. Vasculitis, or inflammation of blood vessels, can lead to localized hypoxia by reducing blood flow to affected areas, contributing to tissue damage in rheumatoid arthritis.
C. While blockage of veins can contribute to localized hypoxia, it is more related to vasculitis in this condition.
D. The release of synovial enzymes may contribute to joint damage but does not directly cause localized hypoxia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Corticosteroids typically cause weight gain due to increased appetite and fluid retention rather than weight loss.
B. Corticosteroids can cause increased blood sugar levels, not decreased.
C. Loss of bone mineral density is a well-known adverse effect of long-term corticosteroid use, leading to osteoporosis and increased fracture risk.
D. While corticosteroids can lead to skin changes, thickening is not as commonly associated as thinning or atrophy of the skin.
Correct Answer is B
Explanation
A. The vascular response initially increases permeability to allow essential cells and substances to reach the site of injury, rather than becoming impermeable.
B. Dilating blood vessels increases blood flow to the injured area, facilitating the delivery of immune cells and nutrients necessary for healing.
C. Limited perfusion contradicts the purpose of the vascular response, which is to enhance blood flow to the injury.
D. While blood vessels can constrict initially to minimize blood loss, the vascular response overall is characterized by dilation to promote healing.
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