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Questions and Answers
What volume of 500mg/5ml of drug stock is required to fulfill an order of 0.25g?
What volume of 500mg/5ml of drug stock is required to fulfill an order of 0.25g?
- 2.5 ml
- 5 ml (correct)
- 10 ml
- 12.5 ml
How much Erythromycin does a patient weighing 74 kg need at a dosage of 40 mg/kg/dose?
How much Erythromycin does a patient weighing 74 kg need at a dosage of 40 mg/kg/dose?
- 740 mg
- 1480 mg (correct)
- 2960 mg
- 560 mg
For a male patient weighing 90 kg prescribed 1.5 mg/kg/dose of drug X, what is the total dosage required?
For a male patient weighing 90 kg prescribed 1.5 mg/kg/dose of drug X, what is the total dosage required?
- 150 mg
- 200 mg
- 120 mg
- 135 mg (correct)
If a patient weighing 45 kg is prescribed 50 mg/kg/dose of Cloxacillin, how many mg are needed?
If a patient weighing 45 kg is prescribed 50 mg/kg/dose of Cloxacillin, how many mg are needed?
A female patient weighing 78 kg needs Chloramphenicol at 40 mg/kg/dose. How many grams does she require?
A female patient weighing 78 kg needs Chloramphenicol at 40 mg/kg/dose. How many grams does she require?
For a patient weighing 60 kg requiring 40 mcg/kg of a drug, what is the dosage in mg?
For a patient weighing 60 kg requiring 40 mcg/kg of a drug, what is the dosage in mg?
What is the infusion rate in ml/hour for 800 ml of fluid to be infused over 2 hours?
What is the infusion rate in ml/hour for 800 ml of fluid to be infused over 2 hours?
If 1000 ml of 5% Dextrose in normal saline is to be infused over 6 hours, what is the rate in ml/hour?
If 1000 ml of 5% Dextrose in normal saline is to be infused over 6 hours, what is the rate in ml/hour?
For half a litre (500 ml) of fluid given over 4 hours, what is the rate in ml/hour?
For half a litre (500 ml) of fluid given over 4 hours, what is the rate in ml/hour?
A patient is to receive 500 ml of dextrose 5% over 2 hours. What is the infusion rate in drops per minute if the drop factor is 20?
A patient is to receive 500 ml of dextrose 5% over 2 hours. What is the infusion rate in drops per minute if the drop factor is 20?
Flashcards
Dosage
Dosage
The amount of medication to be given in a single dose, calculated based on the patient's weight, typically expressed in milligrams (mg).
Dosage per kg
Dosage per kg
The prescribed amount of medication per unit of body weight, usually expressed as milligrams per kilogram (mg/kg).
Infusion Rate
Infusion Rate
The rate at which a solution is infused into a patient, usually expressed in milliliters per hour (ml/hr).
Drug Concentration
Drug Concentration
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Infusion Volume
Infusion Volume
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Drop Factor
Drop Factor
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Medication Calculation
Medication Calculation
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Unit Conversion
Unit Conversion
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Dosage Calculation
Dosage Calculation
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Infusion Rate Calculation
Infusion Rate Calculation
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Study Notes
Drug Dosage Calculations
- 0.25g of drug requires 2.5 ml of solution if stock is 500 mg/5ml
- A patient weighing 74 kg, prescribed 40 mg/kg of erythromycin needs 2960 mg.
- A 90 kg male patient needs 135 mg of drug X for a single dose
- A 45 kg patient needs 2250 mg or 2.25 g of cloxacillin
Patient Dosage Calculations
- A 78 kg female requires 3120 mg of chloramphenicol
- A 60 kg patient needs 2400 mcg or 2.4 mg of a drug
- A 5-year-old, 20 kg patient needs 100 mcg of Digoxin. This translates to 0.2 ml.
Fluid Infusion Rates
- 800 ml of fluid over 2 hours requires a rate of 400 ml/hour or 15 ml/minute
- 500 ml of Hartmann's solution over 8 hours has an infusion rate of 62.5ml/hr.
- 2.4 liters of 4% dextrose over 16 hours is 150 ml/hour
Infusion Rate Calculations
- With a drop factor of 15, half a liter of fluid infusion over 5 hours need 50 drops/minute
- 480 ml of metronidazole over 4 hours, using a drop factor of 20, gives an infusion rate of 20 drops/minute
- 4.5 liters of dextrose 5% over 15 hours, with a drop factor of 20, yields an infusion rate of 33.3 drops/minute
- 500 ml of dextrose 5%over 2 hours, and a drop factor of 20, entails 20.8 drops/minute.
- 2.5 liters of fluid over 10 hours, at a drop factor of 15, means an infusion rate of 6.25 drops/minute for infusion
Other Calculations
- 0.75 liters of Crystalloid X to be infused over 6 hours needs a rate of 125 ml/hour
- 500 ml of a solution over 6 hours necessitates a rate of 83.3 ml/hour for infusion.
- 1 liter of dextrose over 4 hours has an infusion rate of 250 ml/hr
- 1000 ml of 5% dextrose in normal saline over 6 hours is 166.7 ml/hour
- In 30 minutes, 50 ml of saline is 100 ml/hour for a fluid infusion.
- 20 ml of fluid over 15 minutes, equates to 80ml/hour for infusion
Drop Factor Calculations
- 500ml of blood infused over 4 hours, with a drop factor of 15, translates to 31.25 drops per minute.
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