Order: Diphenhydramine 25mg Q4H
Available: Diphenhydramine 12.5mg/5mL
How much will you administer?
2 mL
10 mL
25mL
12.5 mL
The Correct Answer is B
First, we need to find out how many milligrams (mg) are in 1 milliliter (mL) of the available diphenhydramine solution:
12.5 mg/5 mL
To find out how many milligrams are in 1 mL, we divide the total milligrams by the total milliliters:
12.5 mg ÷ 5 mL = 2.5 mg/mL
Now that we know the concentration of diphenhydramine is 2.5 mg/mL, we can calculate the dose needed for the order of 25 mg:
25 mg ÷ 2.5 mg/mL = 10 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Acute bronchospasm:
Albuterol (Proventil) is commonly used to treat acute bronchospasm, which is characterized by sudden constriction of the muscles surrounding the airways. This constriction leads to narrowing of the air passages, making it difficult to breathe. Albuterol works as a bronchodilator by relaxing these muscles, thereby opening up the airways and relieving symptoms such as wheezing, shortness of breath, and chest tightness. It is commonly used to manage conditions such as asthma, chronic obstructive pulmonary disease (COPD), and bronchitis, where bronchospasm is a prominent feature.
B. Acute allergies:
Albuterol (Proventil) is not typically used to treat acute allergies. While it can help alleviate symptoms such as wheezing and shortness of breath that may occur as a result of allergic reactions affecting the airways, its primary indication is for bronchospasm associated with respiratory conditions like asthma and COPD. Antihistamines and corticosteroids are more commonly used to manage allergic reactions and their associated symptoms.
C. Nasal congestion:
Albuterol (Proventil) is not indicated for the treatment of nasal congestion. Nasal congestion primarily involves swelling and inflammation of the nasal passages, which are not directly affected by albuterol. Decongestants such as pseudoephedrine or nasal corticosteroids are typically used to relieve nasal congestion by reducing inflammation and swelling in the nasal passages.
D. Dyspnea on exertion:
Albuterol (Proventil) may help alleviate dyspnea (shortness of breath) on exertion, particularly if it is caused by bronchospasm or exercise-induced bronchoconstriction. By relaxing the muscles around the airways, albuterol can improve airflow and ease breathing difficulties associated with exertion. However, it is important to note that albuterol is primarily indicated for the treatment of acute bronchospasm rather than dyspnea on exertion unrelated to bronchospasm. Other interventions, such as oxygen therapy or addressing underlying cardiovascular conditions, may be necessary to manage dyspnea on exertion in those cases.
Correct Answer is B
Explanation
A. Instruct the client to use a pursed-lip breathing technique.
Pursed-lip breathing is a technique commonly used to help relieve dyspnea, particularly in individuals with COPD. This technique involves breathing in through the nose and exhaling slowly through pursed lips, which helps to prolong exhalation, reduce airway collapse, and improve oxygen exchange. While pursed-lip breathing can be beneficial, it should not be the priority action when the client reports difficulty breathing. Before initiating any breathing techniques, the nurse should first assess the client's respiratory status to determine the severity of the breathing difficulty and whether additional interventions are necessary.
B. Evaluate the client's respiratory status.
This is the correct priority action in this scenario. When a client with COPD reports difficulty breathing, the nurse's first step should be to thoroughly assess the client's respiratory status. This assessment involves evaluating respiratory rate, depth, effort, oxygen saturation levels, auscultating lung sounds, and assessing for signs of respiratory distress. By conducting a comprehensive assessment, the nurse can determine the severity of the client's symptoms, identify any potential exacerbating factors or complications, and make informed decisions regarding appropriate interventions.
C. Increase the oxygen flow to 3 L/min.
While increasing the oxygen flow may be a consideration if the client's oxygen saturation is low, it should not be the immediate priority without first assessing the client's respiratory status. Increasing oxygen flow without proper assessment could potentially worsen hypercapnia in some COPD patients and may not address the underlying cause of the client's difficulty breathing. Therefore, this action should be based on assessment findings rather than being the initial response.
D. Have the client cough and expectorate secretions.
Coughing and expectorating secretions can be helpful in clearing the airways and improving breathing in individuals with COPD, especially if secretions are contributing to the difficulty breathing. However, similar to the pursed-lip breathing technique, this action should not be the priority without first assessing the client's respiratory status. The nurse should determine whether secretions are indeed present and causing the difficulty breathing before instructing the client to cough and expectorate. Therefore, this option should follow a thorough respiratory assessment.
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