Which statement describes the action of a beta-adrenergic agent for a patient with a respiratory disorder such as asthma?
Bronchodilation.
Decrease in peak expiratory flow.
Thinner respiratory secretions.
Increase in respiratory rate.
The Correct Answer is A
A. Beta-adrenergic agents (often called bronchodilators) work by stimulating beta-2 adrenergic receptors in the airway smooth muscle, leading to relaxation of the muscles and dilation of the airways. This helps improve airflow and relieve symptoms of asthma.
B. A beta-adrenergic agent should ideally increase peak expiratory flow (PEF) by dilating the airways and improving airflow, not decrease it.
C. This is not a direct action of beta-adrenergic agents. While some medications (like mucolytics or certain expectorants) can thin secretions, beta-adrenergic agents primarily focus on bronchodilation and do not significantly affect the viscosity of respiratory secretions.
D. While beta-adrenergic agents can sometimes cause mild tachycardia (increased heart rate) as a side effect, they are not intended to increase the respiratory rate directly. The primary goal of these medications is to improve airway patency rather than change the rate of breathing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","E","F"]
Explanation
A. This is a first-line anti-TB medication that is commonly used in the treatment of active TB infections.
B. Vancomycin is an antibiotic that is effective against certain bacteria, but it is not used in the treatment of TB.
C. This is another first-line anti-TB medication that is often used in combination with other drugs to treat active TB infections.
D. Pantoprazole is a proton pump inhibitor used to treat acid reflux and ulcers. It is not used in the treatment of TB.
E. This is a first-line anti-TB medication that is commonly used in the treatment of active TB infections.
F. Propranolol is a beta-blocker used to treat conditions such as high blood pressure and heart rhythm disorders. It is not used in the treatment of TB.
G. This is a first-line anti-TB medication that is commonly used in the treatment of active TB infections.
Correct Answer is ["A","B","C","F","G","H"]
Explanation
A. The patient's color can indicate their oxygenation status. Cyanosis (bluish tint) may suggest hypoxia, which is critical to assess in an asthma patient.
B. Auscultation of lung sounds is essential in asthma assessment. The presence of wheezing, prolonged expiration, or decreased breath sounds can indicate airway obstruction and the severity of the asthma exacerbation.
C. Assessing heart tones can provide information about the cardiovascular response to respiratory distress. Increased heart rate may occur due to hypoxia or anxiety associated with asthma attacks.
D. Bowel sounds are not relevant in the assessment of asthma. While gastrointestinal symptoms may co- occur in some patients, they are not directly related to asthma's respiratory condition.
E. While peripheral pulses are important in general assessments, they do not provide specific information relevant to asthma management or respiratory status.
F. Monitoring respiratory rate and effort is crucial in assessing asthma. Increased respiratory rate and use of accessory muscles may indicate respiratory distress or an asthma exacerbation.
G. A pulse oximetry reading provides an objective measure of oxygen saturation. Low oxygen saturation levels indicate inadequate oxygenation, which is critical to monitor in asthma patients.
H. Measuring peak expiratory flow rate (PEFR) helps assess the severity of airway obstruction and monitor asthma control. It can guide treatment decisions and determine if an asthma attack is occurring.
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