A nurse is caring for a client who has a pulmonary embolism. The nurse should identify that the release of inflammatory mediators leads to which of the following pathologic findings?
Decreased pulmonary vascular resistance
Hypercapnia
Hypoventilation
Respiratory alkalosis
The Correct Answer is D
Correct answer: D
Choice A Reason:
Decreased pulmonary vascular resistance is incorrect. Inflammatory mediators released in response to a pulmonary embolism can lead to vasoconstriction and increased pulmonary vascular resistance. This is part of the body's response to redirect blood flow away from the affected area of the lung and maintain adequate perfusion to other areas.
Choice B Reason:
Hypercapnia is incorrect. Hypercapnia refers to elevated levels of carbon dioxide (CO2) in the blood. Hypocapnia usually is present with embolism; hypercapnia, on the other hand, is rare.
Choice C Reason:
Hypoventilation is incorrect. Hypoventilation occurs when there is inadequate ventilation of the lungs relative to metabolic demands. In the context of a pulmonary embolism, hypoventilation can occur due to factors such as pain, respiratory muscle fatigue, or impaired gas exchange, all of which can be influenced by the release of inflammatory mediators.
Choice D Reason:
Respiratory alkalosis is correct. In response to the blockage and the resulting inflammation, the body often increases the respiratory rate as a compensatory mechanism to maintain adequate oxygen levels and remove carbon dioxide. Due to the increased breathing rate, there is excessive exhalation of carbon dioxide, leading to a decrease in the partial pressure of CO2 in the blood. This results in an increase in blood pH, causing respiratory alkalosis.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A Reason:
MS hug is appropriate. The "MS hug" is a colloquial term used to describe a sensation of tightness, pressure, or squeezing around the torso or chest area experienced by some individuals with multiple sclerosis (MS). It is caused by spasms or contractions of the intercostal muscles (muscles between the ribs) or the diaphragm due to lesions in the spinal cord disrupting nerve signals. This sensation can be uncomfortable or painful for the individual.
Choice B Reason:
Lhermitte's sign is inappropriate. Lhermitte's sign is a common symptom experienced by individuals with MS but it presents differently. It is characterized by an electric shock-like sensation that radiates down the spine and into the limbs, typically triggered by flexing the neck forward. It is caused by damage to the spinal cord's myelin sheath, leading to abnormal nerve signal transmission.
Choice C Reason:
Paroxysmal spasms is inappropriate. Paroxysmal spasms are sudden, involuntary muscle contractions or jerking movements that can occur in various parts of the body. While spasms are common in MS, they are not specifically associated with the sensation of tightness around the torso as described in the scenario.
Choice D Reason:
Trigeminal neuralgia is inappropriate. Trigeminal neuralgia is a condition characterized by sudden, severe facial pain often described as stabbing or electric shock-like. It is caused by irritation or damage to the trigeminal nerve, which is responsible for facial sensation. While individuals with MS may experience trigeminal neuralgia, it typically does not present with a tightening feeling around the torso.
Correct Answer is A
Explanation
Choice A Reason:
Smoking tobacco is the primary and most significant risk factor for emphysema. Tobacco smoke contains harmful chemicals and toxins that directly damage the lungs. Chronic exposure to cigarette smoke leads to inflammation and destruction of lung tissue, particularly the alveoli, contributing to the development of emphysema.
Choice B Reason:
Between 20 to 30 years of age. While smoking at any age is harmful to lung health, the risk of developing emphysema increases with prolonged exposure to tobacco smoke over many years. Emphysema is typically a disease of middle to older age, with symptoms often appearing after years of smoking.
Choice C Reason:
Asthma is a chronic inflammatory condition of the airways characterized by reversible airflow obstruction and airway hyperresponsiveness. While asthma and emphysema are both respiratory diseases, they have distinct pathophysiological mechanisms and risk factors. Asthma is not a direct cause of emphysema, although some individuals with poorly controlled asthma may develop chronic obstructive pulmonary disease (COPD), which includes emphysema as one of its components.
Choice D Reason:
Pollution is not correct. Environmental pollution, including air pollution from industrial emissions, vehicle exhaust, and particulate matter, can contribute to respiratory problems and exacerbate pre-existing lung conditions. While exposure to pollution can worsen respiratory symptoms and lung function, it is not the primary cause of emphysema. However, long-term exposure to certain pollutants may increase the risk of developing respiratory diseases, including COPD, which encompasses emphysema.

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