Why is a patient at risk for pneumonia, if they are unable to get out of bed?
When on bedrest, the patient is more prone to develop asthma, which can lead to pneumonia.
Mucus pools in the lungs, providing a favorable environment for bacterial growth.
The need for supplemental oxygen increases with bedrest, which then increases the risk of developing pneumonia.
Many bacteria and viruses are present in the hospital that could lead to pneumonia.
The Correct Answer is B
A. Asthma is not typically linked to bedrest. Bedrest can lead to decreased lung expansion and impaired mucus clearance, which may increase the risk of infections like pneumonia, but it does not specifically increase the risk of asthma.
B. When a patient is immobile and unable to get out of bed, mucus can accumulate in the lungs, as normal coughing and deep breathing are reduced. This pooling of mucus provides an ideal environment for bacteria to grow, leading to pneumonia.
C. While supplemental oxygen might be needed for patients with certain respiratory conditions, it is not the primary risk factor for pneumonia in bedrest. In fact, oxygen therapy might be used to treat pneumonia.
D. Hospital-acquired infections, including pneumonia, are a concern, but the primary risk from bedrest is the inability to clear mucus effectively, not the presence of pathogens alone.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Carotid artery and aorta contain the carotid bodies and aortic bodies, which are peripheral chemoreceptors. These structures detect changes in blood oxygen, carbon dioxide, and pH levels, sending signals to the respiratory centers to adjust breathing accordingly.
B. The cerebellum and pons are parts of the brain involved in motor control and respiratory rhythm, respectively, but do not contain peripheral chemoreceptors.
C. The coronary sinus and alveoli are not involved in detecting chemical changes in the blood for breathing regulation. The coronary sinus drains blood from the heart muscle, and the alveoli are sites of gas exchange, not chemoreception.
D. The brachiocephalic vein and superior vena cava are large veins that return deoxygenated blood to the heart but do not house chemoreceptors involved in respiratory regulation.
Correct Answer is B
Explanation
A. Active transport requires energy and is used to move substances against their concentration gradient. Oxygen moves along its concentration gradient, so active transport is not involved.
B. Diffusion is the correct mechanism. Oxygen moves from an area of higher concentration in the alveoli to a lower concentration in the pulmonary capillaries through the alveolar-capillary membrane. This passive process does not require energy.
C. Endocytosis is a process cells use to engulf large particles or substances, not how gases like oxygen are transported.
D. Pinocytosis is a form of endocytosis specifically for fluid uptake and is not involved in the respiratory gas exchange process
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