3 pts) A patient who weighs 170 lb has an order for an IVPB to infuse at the rate of 0.05 mg/kg/min. The medication is to be added to 100 mL NS and infuse over 30 minutes. How many grams of the drug will the patient receive?
In the realm of nursing, accurate medication dosage calculation is a critical skill to ensure the safe and effective administration of medications. In this case study, we’ll explore a scenario involving a patient who weighs 170 lb and has an order for an IVPB (intravenous piggyback) infusion at a specific rate. Our task is to calculate how many grams of the drug the patient will receive during this infusion, keeping patient safety as our top priority.
The order specifies the following details:
Patient weight: 170 lb
IVPB infusion rate: 0.05 mg/kg/min
Infusion volume: 100 mL
Infusion duration: 30 minutes
To calculate the number of grams of the drug the patient will receive, we need to follow these steps:
The patient’s weight is given in pounds (lb). To calculate the dosage based on weight, we need to convert this to kilograms (kg). Using the conversion factor of 1 kg = 2.205 lb:
Patient’s weight in kg = 170 lb / 2.205 lb/kg = approximately 77.08 kg
The order specifies a dosage of 0.05 mg/kg/min. We will now calculate the dosage for the patient per minute:
Dosage per minute = 0.05 mg/kg/min * 77.08 kg = approximately 3.85 mg/min
The infusion is set to run for 30 minutes. To find the total dosage the patient will receive during this time, we multiply the dosage per minute by the duration in minutes:
Total dosage = 3.85 mg/min * 30 min = approximately 115.5 mg
The final step is to convert milligrams (mg) to grams (g). There are 1,000 mg in 1 gram:
Total dosage in grams = 115.5 mg / 1,000 = 0.1155 g
In this case, the patient will receive approximately 0.1155 grams of the drug during the IVPB infusion over 30 minutes. Accurate medication dosage calculations are essential in nursing practice to ensure patient safety and the effectiveness of treatment. Nurses must perform these calculations carefully and double-check their work to prevent medication errors and provide optimal care to their patients.
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