A client with asthma is exposed to a trigger and has an asthma attack within 30 minutes of the exposure. The client uses their albuterol inhaler as prescribed and experiences relief of symptoms. Six hours later, the client's asthma symptoms return. Which of the following is true about the late-phase response of asthma?
The late-phase response occurs due to an influx of additional inflammatory cells
The symptoms of the late-phase response tend to respond better to a rescue inhaler than the symptoms of the early-phase response
The late-phase response occurs because the client did not use their rescue inhaler properly
The late-phase response only occurs if the client continues to be exposed to their trigger after the initial attack
The Correct Answer is A
A. The late-phase response in asthma is characterized by a delayed and prolonged inflammatory reaction that can occur 4 to 6 hours after exposure to a trigger. It involves the recruitment of additional inflammatory cells, such as eosinophils and T cells, which contribute to ongoing airway inflammation, increased mucus production, and bronchoconstriction. This phase often leads to a return of symptoms or worsening of symptoms after the initial relief provided by a rescue inhaler.
B. The late-phase response does not typically respond as well to rescue inhalers (such as albuterol) as the early-phase response does. Rescue inhalers are primarily effective for the immediate, bronchospastic component of asthma (early-phase response).
C. The late-phase response occurs as part of the natural progression of asthma inflammation and is not necessarily related to improper use of a rescue inhaler. Even with proper use of a rescue inhaler, the late-phase response can still occur due to the underlying inflammatory processes.
D. The late-phase response can occur even if the trigger is no longer present. It is related to the ongoing inflammatory process rather than continued exposure to the trigger. Although continued exposure to triggers can exacerbate symptoms, the late-phase response can still occur independently of further exposure.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. This statement is not accurate in the context of miotic medications. Miotic drugs do not work by blocking neural impulses to the muscles. Instead, they directly affect the eye's pupil size and fluid dynamics. This response does not correctly describe the action of miotic agents.
B. This response is incorrect because miotic medications actually constrict the pupil, not dilate it. In acute angle-closure glaucoma, dilation of the pupil would worsen the condition by further blocking the drainage angle. Miotics are used to constrict the pupil, which helps open the angle between the iris and the cornea, thereby facilitating fluid drainage.
C. Miotic medications cause the pupil to constrict (miosis), which helps in opening the narrow angle between the iris and the cornea. In acute angle-closure glaucoma, the angle is closed or narrow, preventing proper drainage of aqueous humor. By constricting the pupil, miotic medications can help to relieve this obstruction and allow better drainage of fluid, thereby reducing intraocular pressure.
D. This statement is incorrect regarding the action of miotic medications. Miotic drugs do not pull aqueous humor into the bloodstream. Their primary effect is on the pupil's size and the angle of the eye to improve drainage. Medications that reduce aqueous humor production or increase its outflow, such as carbonic anhydrase inhibitors or prostaglandin analogs, are responsible for these actions
Correct Answer is D
Explanation
A. Cool, clammy skin can be a sign of a myocardial infarction. It occurs due to the body's stress response during an MI, leading to decreased perfusion and sweating. This symptom is consistent with the autonomic response to a heart attack.
B. Chest pain radiating into the back, jaw, or arms is a classic symptom of myocardial infarction. This radiation of pain is due to the way pain signals are transmitted and referred from the heart to other parts of the body. It is a common and significant symptom of MI.
C. Nausea and vomiting can occur during a myocardial infarction, particularly in older adults. These symptoms are related to the autonomic nervous system's response to the stress of an MI and can sometimes be the presenting symptoms, especially in women and older adults.
D. Peripheral edema is generally not a direct symptom of myocardial infarction. It is more commonly associated with chronic heart failure or other conditions leading to fluid overload. While MI can lead to heart failure over time, peripheral edema itself is not a typical acute symptom of an MI.
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