pediatric client. The child weighs 80 pounds. Available is promethazine 40mg/5ml. How many mL should the nurse administer? (Round to the nearest tenth. Do not use a trailing zero.)
The Correct Answer is ["6.8"]
To determine the correct dosage, let’s follow these steps:
Convert the child’s weight from pounds to kilograms:
1 pound = 0.453592 kilograms
80 pounds × 0.453592 = 36.3 kilograms
Calculate the total dose in milligrams (mg):
1.5 mg/kg × 36.3 kg = 54.45 mg
Determine the volume in milliliters (mL) to administer:
Available concentration: 40 mg/5 mL
Using the formula: (Desired dose / Available dose) × Volume
(54.45 mg / 40 mg) × 5 mL = 6.8 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. "Make sure to use this each time I feel an asthma attack coming on": This statement indicates a need for further education. LABAs are not intended for immediate relief of acute asthma symptoms or attacks; they are designed for long-term control and prevention of symptoms. Clients should use a short-acting beta agonist (SABA) for quick relief during an asthma attack, not a LABA.
B. "I know that these drugs can sometimes make my heart beat faster": This statement reflects an understanding of a potential side effect of LABAs. Increased heart rate is a known side effect, and it is important for clients to be aware of this possibility.
C. "I've heard that this drug sometimes gets less effective over time": This statement is accurate. Tolerance can develop with LABA use, and clients should be informed about this possibility to monitor their symptoms and report any changes to their healthcare provider.
D. "I've heard that this drug is particularly good at preventing asthma attacks during exercise": This statement is correct. LABAs can be beneficial for preventing exercise-induced bronchospasm when used as part of a regular asthma management plan, and clients should understand this use.
Correct Answer is A
Explanation
A. Tachycardia: Theophylline can stimulate the heart, leading to an increase in heart rate. Tachycardia is a common adverse effect associated with theophylline use, and it is essential for the client to be aware of this potential side effect, especially if they have underlying heart conditions.
B. Constipation: While gastrointestinal side effects can occur with theophylline, constipation is not a primary or common adverse effect. Theophylline may actually lead to gastrointestinal upset or increased gastric acid production rather than causing constipation.
C. Drowsiness: Theophylline typically does not cause drowsiness. In fact, it is more likely to
cause restlessness or insomnia, as it is a stimulant. Thus, advising the client about drowsiness is not relevant in this case.
D. Oliguria: Oliguria (reduced urine output) is not a common adverse effect of theophylline. Theophylline can affect kidney function indirectly but does not typically present as oliguria. Monitoring for any renal changes is essential, but oliguria is not a primary concern.
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