A nurse is caring for a client who has respiratory failure due to ventilation-perfusion (V/Q) mismatch. The nurse should recognize that the client most likely has which of the following conditions?
Flail chest
Emphysema
Congestive heart failure
Guillain-Barré syndrome
None
None
The Correct Answer is B
Choice A Reason:
Flail chest is incorrect. Flail chest is a condition characterized by multiple rib fractures, causing instability in the chest wall. While it can lead to respiratory distress, it doesn't directly cause ventilation-perfusion (V/Q) mismatch. Instead, it impairs the mechanics of breathing by compromising chest wall integrity.
Choice B Reason:
Emphysema is a chronic obstructive pulmonary disease (COPD) where the alveolar walls are destroyed, leading to a loss of surface area for gas exchange. This results in areas of the lungs that are well-perfused but poorly ventilated, causing a V/Q mismatch. The damage to alveoli leads to impaired ventilation, while blood flow may still be adequate, leading to hypoxemia (low oxygen levels in the blood).
Choice C Reason:
CHF primarily affects the heart’s ability to pump blood effectively, leading to pulmonary congestion and impaired gas exchange. However, it typically causes diffusion defects rather than a direct ventilation-perfusion mismatch. V/Q mismatch may occur secondary to pulmonary edema, but it’s not the primary mechanism of respiratory failure in CHF.
Choice D Reason:
Guillain-Barré syndrome is incorrect. Guillain-Barré syndrome (GBS) is a neurological disorder that affects the peripheral nervous system, leading to muscle weakness and paralysis. While respiratory muscle weakness can occur in GBS, it doesn't directly cause ventilation-perfusion (V/Q) mismatch. GBS primarily affects nerve function rather than lung function.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","D","E","F"]
Explanation
Choice A Reason:
Sedatives do not impact the risk of obstructive sleep apnea: This statement is incorrect. Sedatives, particularly those that cause muscle relaxation or depress the central nervous system, can exacerbate obstructive sleep apnea by further relaxing the muscles of the upper airway, leading to increased airway collapse during sleep.
Choice B Reason:
CPAP compliance enhances quality of sleep is correct. Continuous positive airway pressure (CPAP) therapy is a common treatment for obstructive sleep apnea. Compliance with CPAP therapy, meaning consistent and proper use of the CPAP device during sleep, is essential for effectively managing sleep apnea and improving sleep quality.
Choice C Reason:
Alcohol does not affect the risk of obstructive sleep apnea. This statement is incorrect. Alcohol consumption can worsen obstructive sleep apnea by promoting muscle relaxation in the upper airway, leading to increased airway collapse and more frequent episodes of apnea during sleep.
Choice D Reason:
Obesity increases the risk of obstructive sleep apnea. This statement is correct. Obesity is a significant risk factor for obstructive sleep apnea. Excess fat tissue around the neck can increase the likelihood of airway obstruction during sleep, contributing to the development or worsening of sleep apnea.
Choice E Reason:
Positional therapy enhances client comfort is correct. Positional therapy involves strategies to encourage sleeping in positions that minimize the severity of obstructive sleep apnea, particularly for individuals with positional OSA (where apnea events are primarily or significantly worse when sleeping in specific positions, such as supine). This statement is correct.
Choice F Reason:
Smoking increases the risk of obstructive sleep apnea: This statement is correct. Smoking can increase the risk of obstructive sleep apnea due to its effects on upper airway inflammation and respiratory function. Smoking cessation can be beneficial in managing sleep apnea and improving overall health.
Correct Answer is ["A","C","D","E","F"]
Explanation
Choice A Reason:
Asthma flare-ups during exercise is correct . Exercise-induced asthma is a common feature of nonallergic asthma. Physical activity can trigger bronchoconstriction and asthma symptoms in individuals with this type of asthma.
Choice B Reason:
Nasal inflammation is incorrect. Nasal inflammation is not typically a characteristic feature of nonallergic asthma. While nasal symptoms such as congestion, rhinorrhea (runny nose), and sneezing are common in allergic asthma due to the involvement of allergic rhinitis (hay fever), they are not typically prominent in nonallergic asthma. Nonallergic asthma primarily affects the lower airways (bronchi and bronchioles) rather than the upper airways (nose and throat). Therefore, nasal inflammation is not commonly associated with nonallergic asthma.
Choice C Reason:
No hypersensitivity to allergens is correct. Unlike allergic asthma, where exposure to allergens triggers asthma symptoms, individuals with nonallergic asthma do not have a hypersensitivity to allergens.
Choice D Reason:
Asthma flare-ups with NSAID administration is correct. Nonsteroidal anti-inflammatory drugs (NSAIDs) such as aspirin or ibuprofen can trigger asthma symptoms in some individuals with nonallergic asthma.
Choice E Reason:
Persistence of manifestations is correct. Nonallergic asthma tends to have persistent symptoms even in the absence of allergen exposure. Symptoms may occur regularly and may not have a clear seasonal pattern like allergic asthma.
Choice F Reason:
Positive response to corticosteroids is correct. Corticosteroids are often effective in managing nonallergic asthma. Individuals with this type of asthma typically respond well to corticosteroid treatment as part of their asthma management plan.
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