A nurse is preparing to administer midazolam 0.2 mg/kg via IV bolus now. The client weighs 220 lb. How many mg should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["20"]
To calculate the dose of midazolam to administer, we need to convert the client's weight from pounds to kilograms, and then multiply by the dose per kilogram.
Given: Client weight = 220 lb
Dose of midazolam = 0.2 mg/kg
First, let's convert the client's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg (approximately 0.45 kg, for simplicity)
Client weight in kilograms ≈ 220 lb × 0.45 kg/lb ≈ 99 kg
Now, let's calculate the dose of midazolam:
Dose = Weight (in kg) × Dose per kg Dose ≈ 99 kg × 0.2 mg/kg = 19.8 mg
Rounded to the nearest whole number, the nurse should administer approximately 20 mg of midazolam.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Prepare for gastric lavage due to an extremely elevated lithium level.
This option is incorrect. A lithium level of 1.0 mEq/L is within the therapeutic range for treating bipolar disorder or other mood disorders. Gastric lavage (stomach pumping) is not indicated for this level of lithium concentration.
B. Check the client's medication record to assess whether the client has been refusing her lithium.
This option is not directly relevant to the client's current lithium level of 1.0 mEq/L. While it's important to monitor medication adherence, the client's lithium level is within the therapeutic range, so there is no immediate concern about refusal or non-adherence.
C. Administer the morning dose of lithium.
This option is correct. With a lithium level of 1.0 mEq/L, which falls within the therapeutic range for treating bipolar disorder, the nurse should proceed with administering the morning dose of lithium as prescribed. It's important to maintain therapeutic lithium levels to effectively manage the client's condition.
D. Hold the medication and assess for early manifestations of toxicity.
This option is incorrect. With a lithium level of 1.0 mEq/L, there is no indication to hold the medication or suspect early manifestations of toxicity. Monitoring for lithium toxicity is important, but it's not warranted in this scenario where the lithium level is within the therapeutic range.
Correct Answer is B
Explanation
A. Insert the needle slowly and gently.
This statement is generally true for most injection techniques, including the Z-track method. Slow and gentle insertion helps minimize discomfort for the client and allows for better control over the needle's placement. However, the specific speed of insertion may vary depending on the nurse's technique and the client's skin condition.
B. Pull the skin 1.3 cm (1/2 inch) to the side.
This statement is correct. The Z-track technique involves pulling the skin laterally (to the side) by approximately 1.3 cm (1/2 inch) before inserting the needle. This lateral displacement of the skin creates a zigzag pathway for the medication, which helps prevent leakage or tracking of the medication along the injection site.
C. Aspirate for 5 to 10 seconds.
Aspiration, or pulling back on the plunger of the syringe after needle insertion, is not typically recommended for intramuscular injections, including those using the Z-track method. Aspiration may increase the risk of tissue trauma or damage to blood vessels. Since the Z-track technique is designed to minimize medication leakage into the subcutaneous tissue, aspiration is usually unnecessary.
D. Use a 45° angle of insertion.
The angle of insertion for the Z-track technique is typically 90 degrees (perpendicular) to the skin surface rather than 45 degrees. This angle allows for proper depth penetration into the muscle and ensures adequate delivery of the medication into the muscle tissue.
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