The nurse is caring for a client currently taking oxymetazoline. Which of the following statements should the nurse include regarding oxymetazoline?
Limit use of the drug to 3 days to prevent rebound nasal congestion
This drug may be used in maintenance treatment for asthma
This medication may take up to a week to see effects
Take this drug at bedtime because it may cause drowsiness
The Correct Answer is A
A. Limit use of the drug to 3 days to prevent rebound nasal congestion: Oxymetazoline is a topical nasal decongestant that can lead to rebound congestion if used for more than three consecutive days. This condition, known as rhinitis medicamentosa, can worsen nasal congestion rather than alleviate it, making it crucial for clients to adhere to this guideline.
B. This drug may be used in maintenance treatment for asthma: Oxymetazoline is not indicated for the maintenance treatment of asthma. It is a nasal decongestant, primarily used for temporary relief of nasal congestion due to colds or allergies, and does not address the underlying inflammation in asthma.
C. This medication may take up to a week to see effects: In fact, oxymetazoline provides rapid relief of nasal congestion, typically within minutes of administration. Clients should expect to feel its effects much sooner rather than having to wait a week, which can lead to misuse or overuse of the medication.
D. Take this drug at bedtime because it may cause drowsiness: Oxymetazoline is not known to cause drowsiness; rather, it works as a decongestant. Patients are usually advised to use it during the day as needed, and it should not be specifically recommended for bedtime use
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Correct Answer is ["B","D","E","F"]
Explanation
A) Ipratropium is the drug of choice for acute asthma exacerbations: This statement is incorrect. While ipratropium is used in the management of asthma, it is not the first-line treatment for acute exacerbations. Short-acting beta-agonists, such as albuterol, are the preferred choice for rapid relief during an acute asthma attack due to their quick onset of action.
B) Mechanism of action includes blocking acetylcholine receptors in the airway: This statement is accurate. Ipratropium is an anticholinergic agent that works by blocking acetylcholine receptors in the bronchial smooth muscle. This action leads to bronchodilation and helps to decrease mucus production, making it effective for managing airway constriction.
C) Mechanism of action includes antagonizing histamine receptors of the upper airway: This statement is incorrect. Ipratropium does not act on histamine receptors; rather, it specifically targets acetylcholine receptors. Antihistamines are the medications that block histamine receptors, primarily used for allergic reactions and rhinitis, but not for bronchodilation in asthma.
D) Client's who are allergic to soybean should avoid taking ipratropium: This statement is true. Ipratropium bromide may contain soy lecithin, which can pose a risk for patients with soybean allergies. Therefore, it is essential for healthcare providers to assess a patient’s allergy history before prescribing this medication.
E) Urinary retention is a side effect of Ipratropium bromide: This is correct. Anticholinergic medications, including ipratropium, can lead to urinary retention as a side effect due to their action of inhibiting acetylcholine, which plays a role in bladder function. Patients should be monitored for this side effect, especially if they have a history of urinary issues.
F) Ipratropium (Atrovent) is a medication for asthma and chronic obstructive pulmonary disease (COPD): This statement is accurate. Ipratropium is indicated for both asthma and COPD management, as it helps to relieve bronchospasm and improve airflow. It is often used as an adjunct therapy in combination with other bronchodilators for better management of respiratory conditions.
Correct Answer is B
Explanation
A. Stimulates effects of histamine by occupying all H receptor sites: This statement inaccurately describes the action of diphenhydramine. Instead of stimulating histamine effects, diphenhydramine actually blocks them, particularly at H1 receptors, which areinvolved in allergic responses.
B. Blocks effects of histamine by competing and occupying H1 receptor sites: This accurately describes the mechanism of action of diphenhydramine. As an antihistamine, it competes with histamine for binding to H1 receptor sites, effectively reducing symptoms of allergies, such as sneezing, itching, and nasal congestion.
C. Blocks effects of histamine by competing and occupying H2 receptor sites: This option is incorrect because H2 receptor antagonists are used primarily to reduce gastric acid secretion, not to treat allergic reactions. Diphenhydramine specifically targets H1 receptors, not H2 receptors.
D. Stimulates effects of histamine by increasing the amount of H2 receptor sites: This statement is also incorrect. Diphenhydramine does not stimulate histamine activity or increase receptor sites. Instead, it functions to inhibit the action of histamine at H1 receptors, which is fundamental in alleviating allergy symptoms.