The healthcare provider prescribes dalteparin 200 units/kg subcutaneously once day for a client who weighs 154 pounds. The medication is available in 25,000 units/mL vial. How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["0.6"]
Calculation:
- Convert the client's weight from pounds (lb) to kilograms (kg).
The client's weight is 154 lb.
Client weight (kg) = 154 lb/2.2 lb/kg
= 70 kg.
- Calculate the total dose to be administered (units).
The ordered dose is 200 units/kg.
Total dose (units) = 200 units/kg×70 kg
= 14,000 units.
- Calculate the volume to administer in milliliters (mL).
Available concentration is 25,000 units/mL.
Volume (mL) = Total dose (units)/Available concentration (units/mL)
= 14,000 units/25,000 units/mL
= 0.56 mL.
- Round the answer to the nearest tenth.
= 0.6 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Glucose and calcium levels: While hyperglycemia can occur secondary to stress, glucose and calcium are not the primary indicators of severity in a thyrotoxic crisis.
B. Blood and urine cultures: Cultures are important if infection is suspected as a trigger, but they do not reflect the systemic impact of a thyrotoxic crisis itself.
C. Renal and liver function tests: Thyrotoxic crisis can lead to multi-organ stress, including hepatic dysfunction and impaired renal perfusion. Monitoring liver enzymes and renal function helps detect complications early and guide interventions.
D. Electrolytes and hemoglobin: Electrolytes may fluctuate and anemia may exist, but they are not the most critical values to monitor during the acute phase of a thyrotoxic crisis compared with organ function indicators.
Correct Answer is ["83"]
Explanation
Calculation:
- Convert the total infusion time from hours to minutes.
Total time (min) = 2hours×60minutes/hour
= 120minutes.
- Calculate the infusion rate in drops per minute (gtt/min).
Total volume: 500mL
Drop factor: 20gtt/mL
Total time: 120min
Rate(gtt/min) = (TotalVolume(mL) × DropFactor(gtt/mL))/ TotalTime(min)
= (500mL × 20gtt/mL)/ 120min
= 10,000/ 120
=83.333...gtt/min
- Round the answer to the nearest whole number.
= 83gtt/min.
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