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","C","E"]
Explanation
A. Inspiratory stridor
Inspiratory stridor is a high-pitched, musical sound heard during inspiration that indicates partial obstruction of the upper airway. It is a characteristic sign of airway obstruction and requires immediate attention.
B. Nausea
Nausea is not a common manifestation of airway obstruction. It may be associated with other conditions such as gastrointestinal issues or medication side effects but is not directly related to airway obstruction.
C. Retractions
Retractions refer to visible sinking of the skin between the ribs and above the clavicles during inspiration, which indicates increased effort to breathe. Retractions can occur in response to airway obstruction, as the body attempts to overcome the resistance to breathing.
D. Muscle tremors
Muscle tremors are not specific manifestations of airway obstruction. Tremors may occur due to various reasons such as anxiety, electrolyte imbalances, or neurological conditions but are not typically associated with airway obstruction.
E. Cyanosis
Cyanosis is a bluish discoloration of the skin and mucous membranes resulting from inadequate oxygenation of the blood. It can occur with airway obstruction as oxygen exchange is compromised. Cyanosis is a late sign of respiratory distress and requires immediate intervention.
Correct Answer is B
Explanation
A. Prone with arms raised over the head.
This position involves lying face down with the arms raised over the head. It is not appropriate for thoracentesis because it does not provide easy access to the thoracic cavity, and it may compress the chest, making it difficult for the client to breathe comfortably during the procedure.
B. Sitting, leaning forward over the bedside table.
This is the correct choice. For thoracentesis, the client should be positioned sitting upright and leaning forward over the bedside table or supported by pillows. This position allows better access to the thoracic cavity and facilitates the removal of pleural fluid. Leaning forward also helps to open up the intercostal spaces, making it easier for the healthcare provider to insert the needle into the appropriate space between the ribs.
C. High Fowler's position.
The High Fowler's position involves the client sitting upright with the head of the bed elevated at a 90-degree angle. While this position may be used for other respiratory procedures or for comfort, it is not the optimal position for thoracentesis. It does not provide the same degree of access to the thoracic cavity as the sitting position with forward leaning.
D. Side-lying with knees drawn up to the chest.
This position involves lying on one side with the knees drawn up to the chest. It is not appropriate for thoracentesis because it does not provide access to the thoracic cavity, and it may obstruct the procedure. Additionally, this position may not be comfortable for the client during the procedure.
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