How many milliliters will the child receive per dose? (round to the nearest hundredth) and choose the correct syringe you would administer your dose with (refer to your previous answer)
0.5ml syringe
1ml syringe
3 ml syringe
5ml syringe
The Correct Answer is B
Convert the child's weight from pounds (lb) to kilograms (kg).
Client weight: 33 lbs
1 kg = 2.2 lbs
Weight (kg) = 33 lbs / 2.2 lbs/kg
= 15 kg.
Calculate the single ordered dose in milligrams (mg/dose).
Total daily dose rate: 7.5 mg/kg/day
Dosing frequency: every 8 hours (3 doses per day)
Single dose (mg) = (7.5 mg/kg/day x 15 kg) / 3 doses/day
= 112.5 mg/day / 3 doses/day
= 37.5 mg/dose.
Determine the concentration of the available solution.
Available: 80 mg in 2 mL
Concentration (mg/mL) = 80 mg / 2 mL
= 40 mg/mL.
Calculate the volume to administer per single dose in milliliters (mL).
Volume (mL) = Single Dose (mg) / Concentration (mg/mL)
= 37.5 mg / 40 mg/mL
= 0.9375 mL.
Round the answer to the nearest hundredth.
= 0.94 mL.
A volume of 0.94 mL requires a syringe that can measure fractions of a milliliter accurately. The 1 mL syringe (Tuberculin syringe) is the standard and most precise choice for volumes less than 1 mL.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Convert the child's weight from pounds (lb) to kilograms (kg).
Client weight: 35 lbs
1 kg = 2.2 lbs
Weight (kg) = 35 lbs / 2.2 lbs/kg
= 15.909 kg
Calculate the minimum recommended daily dose in milligrams (mg/day).
Minimum recommended rate: 3 mg/kg/day
Minimum daily dose (mg) = Minimum recommended rate (mg/kg/day) x Weight (kg)
= 3 mg/kg/day x 15.909 kg
= 47.727 mg/day.
Calculate the maximum recommended daily dose in milligrams (mg/day).
Maximum recommended rate: 6 mg/kg/day
Maximum daily dose (mg) = Maximum recommended rate (mg/kg/day) x Weight (kg)
= 6 mg/kg/day x 15.909 kg
= 95.455 mg/day
Round the minimum and maximum doses to the nearest tenth
Minimum daily dose: 47.7 mg
Maximum daily dose: 95.5 mg.
Correct Answer is A
Explanation
A. Availability of different dosage forms of the same medication: Pediatric patients often require liquid formulations, divided doses, or off-label preparations. Variability in forms increases the chance of calculation or administration errors, making this the most frequent risk factor.
B. There are many standardized dosing regimens for children: In pediatrics, standardized regimens are limited, and dosing is usually individualized by weight or body surface area. This complexity increases error potential, not the existence of many standardized regimens.
C. Children are able to communicate adverse reactions: Young children often cannot clearly communicate adverse effects, which makes detection of errors harder. This inability to communicate contributes to risk but is not the main cause of errors.
D. There is not a variance among children in body weight, surface area, and organ maturity: There is actually significant variability among children, which complicates dosing and pharmacokinetics. Variability is a major challenge in pediatric medication safety.
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