Where should the nurse read the volume of liquid medication in a graduated cylinder?
At the measurement line
At the base of the meniscus
At the bevel
At the top of the cylinder
The Correct Answer is B
A. At the measurement line: While graduated cylinders have marked measurement lines, the correct technique requires reading the meniscus rather than aligning the eye with a line on the cylinder. Measurement lines alone do not ensure accuracy.
B. At the base of the meniscus: Liquid in a cylinder forms a concave curve, and the correct volume is read at the lowest point of this meniscus at eye level. This method ensures precise measurement and prevents dosing errors.
C. At the bevel: The bevel refers to the slanted edge of a syringe needle, not a graduated cylinder. Reading at the bevel is irrelevant and would produce inaccurate volume readings.
D. At the top of the cylinder: Reading the top of the liquid meniscus overestimates the volume and can result in administering an incorrect dose. Accuracy requires aligning the eye with the meniscus base.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Skip the identity verification step to avoid delaying medication administration: Omitting verification increases the risk of medication errors and patient harm. All clients, regardless of cognitive status, require proper identification before medications are administered.
B. Ask a colleague who is familiar with the client to confirm their identity: Colleague verification is not a reliable substitute for objective identifiers such as the ID band. Medication safety relies on standardized verification methods rather than personal familiarity.
C. Verify the client's identity using the MAR and the client's identification band: When a client cannot communicate, checking the identification band against the MAR ensures correct identity. This approach maintains patient safety and adheres to legal and professional standards for medication administration.
D. Proceed with the administration as the nurse knows the client well: Familiarity does not replace formal identification procedures. Administering medication without verification risks errors and violates safe medication administration protocols.
Correct Answer is D
Explanation
Calculation:
- Identify the ordered dose and tablet strength
Ordered Dose: 150 mg
Tablet Strength: 75 mg per tablet
- Calculate the number of tablets to administer
Number of Tablets = Ordered Dose ÷ Tablet Strength
Number of Tablets = 150 ÷ 75
= 2
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