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 ["A","D"]
Explanation
Choice A Reason:
Temperature 36.3°C (97.4°F) is correct. Hypothermia is a characteristic finding in neurogenic shock due to the loss of sympathetic control over temperature regulation and peripheral vasodilation. This can lead to heat loss from the skin surface and a decrease in core body temperature.
Choice B Reason:
Respirations 12/min is incorrect. Respiratory rate is usually not significantly affected in neurogenic shock. However, individuals with high cervical or upper thoracic spinal cord injuries may experience respiratory compromise due to paralysis of respiratory muscles, but this is not a typical feature of neurogenic shock.
Choice C Reason:
Incorrect: Neurogenic shock typically results inhypotension(low blood pressure) due to vasodilation. The given blood pressure reading is elevated, which is not consistent with neurogenic shock.
Choice D Reason:
Heart rate 54/min is correct. Bradycardia is a common finding in neurogenic shock due to unopposed parasympathetic activity resulting from the loss of sympathetic tone. The heart rate may be slow and may decrease further over time.
Choice E Reason:
Calcium level 7.0 mg/dL is incorrect, Calcium levels are not directly related to neurogenic shock. Neurogenic shock primarily involves the loss of sympathetic tone and the resulting hemodynamic changes, rather than alterations in calcium metabolism.
Correct Answer is ["A","B","D"]
Explanation
Choice A Reason:
African American clients is appropriate. Research suggests that African Americans have a lower prevalence of MS compared to White Americans, but they tend to have more severe disease progression and higher disability rates when diagnosed with MS.
Choice B Reason:
White American clients: Individuals of European descent, including White Americans, have the highest prevalence of MS, particularly those of northern European ancestry. MS is more common in populations of northern European descent compared to other racial and ethnic groups.
Choice C Reason:
East Asian clients: East Asians, including individuals of Chinese, Japanese, and Korean descent, have historically had lower rates of MS compared to individuals of European descent. However, MS prevalence appears to be increasing in East Asian populations, possibly due to changes in lifestyle and environmental factors.
Choice D Reason:
Hispanic or Latino clients: Studies suggest that the prevalence of MS is lower in Hispanic/Latino populations compared to White Americans but higher than in African Americans. However, there is considerable variation in MS prevalence among different Hispanic/Latino subgroups.
Choice E Reason:
Navajo Indian clients: Native American populations, including Navajo Indians, have been reported to have a lower prevalence of MS compared to individuals of European descent. However, limited data are available on MS prevalence and incidence in specific Native American tribes, and more research is needed to fully understand the disease burden in these populations.
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