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What is the approximate equivalent of 1 teaspoon in milliliters?
What is the approximate equivalent of 1 teaspoon in milliliters?
If a medication cup contains 45 ml of solution, how many tablespoons does it hold?
If a medication cup contains 45 ml of solution, how many tablespoons does it hold?
How would you convert 250 lbs to kilograms?
How would you convert 250 lbs to kilograms?
What is the height in centimeters of a person who is 5 feet 9 inches tall?
What is the height in centimeters of a person who is 5 feet 9 inches tall?
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If a doctor prescribes 100 mg of medication and the available concentration is 25 mg per tablet, how many tablets are required?
If a doctor prescribes 100 mg of medication and the available concentration is 25 mg per tablet, how many tablets are required?
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What is the result of converting 1.2 grams to micrograms?
What is the result of converting 1.2 grams to micrograms?
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How many milliliters are in 1 liter?
How many milliliters are in 1 liter?
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If 1 cm is equal to 0.393701 inches, how many inches are in 10 cm?
If 1 cm is equal to 0.393701 inches, how many inches are in 10 cm?
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What is the flow rate in ml per hour for administering 1000 ml of normal saline over 24 hours?
What is the flow rate in ml per hour for administering 1000 ml of normal saline over 24 hours?
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How much fluid will be received by the patient if Lactated Ringer's is administered at 167 ml/h for 6 hours?
How much fluid will be received by the patient if Lactated Ringer's is administered at 167 ml/h for 6 hours?
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If an infusion is set at a rate of 125 ml/h for 500 ml, how long will the infusion take?
If an infusion is set at a rate of 125 ml/h for 500 ml, how long will the infusion take?
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What is the total duration of the infusion if 800 ml of dextrose saline is given at 70 ml/hr for the first 5 hours and then at 60 ml/hr?
What is the total duration of the infusion if 800 ml of dextrose saline is given at 70 ml/hr for the first 5 hours and then at 60 ml/hr?
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In a macro-drop set, if the drip rate is known to be 20 drops/ml, how many drops are there in 100 ml?
In a macro-drop set, if the drip rate is known to be 20 drops/ml, how many drops are there in 100 ml?
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How many tablets should be given to a patient if the doctor orders 0.2 grams of Cemetidine and the available form is 400 mg per tablet?
How many tablets should be given to a patient if the doctor orders 0.2 grams of Cemetidine and the available form is 400 mg per tablet?
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What is the strength expressed as a fraction for a solution containing 1 part solute in 4 parts solution?
What is the strength expressed as a fraction for a solution containing 1 part solute in 4 parts solution?
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If a drug is dissolved in 140 ml of solution, how is the strength expressed as a percentage when using 70g of the drug?
If a drug is dissolved in 140 ml of solution, how is the strength expressed as a percentage when using 70g of the drug?
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Which of the following correctly represents the formula to calculate dosage in mL?
Which of the following correctly represents the formula to calculate dosage in mL?
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In a giving set, what is the drip rate for clear fluids in the standard or macrodrops set?
In a giving set, what is the drip rate for clear fluids in the standard or macrodrops set?
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How many grams of sodium chloride are contained in 2L of a 4% sodium chloride solution?
How many grams of sodium chloride are contained in 2L of a 4% sodium chloride solution?
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What is the percent strength of a solution with 1 part solute in 2 parts solution?
What is the percent strength of a solution with 1 part solute in 2 parts solution?
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What is the equivalent of 0.2 grams in milligrams for dosage calculations?
What is the equivalent of 0.2 grams in milligrams for dosage calculations?
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What is the total volume administered to a patient receiving Lactated Ringer's at 167 ml/h for 6 hours?
What is the total volume administered to a patient receiving Lactated Ringer's at 167 ml/h for 6 hours?
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If an infusion rate of 125 ml/h is set for a total volume of 500 ml, how long will the infusion last?
If an infusion rate of 125 ml/h is set for a total volume of 500 ml, how long will the infusion last?
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In the calculation of total duration for administering 800 ml of dextrose saline, how much fluid is left to administer after the first 5 hours at 70 ml/h?
In the calculation of total duration for administering 800 ml of dextrose saline, how much fluid is left to administer after the first 5 hours at 70 ml/h?
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What is the pump setting in ml/h for a continuous IV of normal saline totaling 1000 ml over a period of 24 hours?
What is the pump setting in ml/h for a continuous IV of normal saline totaling 1000 ml over a period of 24 hours?
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What is the duration of an infusion if 450 ml remains and the rate is reduced to 60 ml/h?
What is the duration of an infusion if 450 ml remains and the rate is reduced to 60 ml/h?
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How many milliliters are contained in 0.5 liters?
How many milliliters are contained in 0.5 liters?
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What is the correct conversion of 1000 micrograms to grams?
What is the correct conversion of 1000 micrograms to grams?
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If a medication cup holds 30 ml, how many teaspoons does it contain given that 1 teaspoon is approximately 5 ml?
If a medication cup holds 30 ml, how many teaspoons does it contain given that 1 teaspoon is approximately 5 ml?
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An obese patient weighing 400 pounds needs his weight converted into kilograms. What is his weight in kilograms? (Use 1 kg = 2.2 lbs)
An obese patient weighing 400 pounds needs his weight converted into kilograms. What is his weight in kilograms? (Use 1 kg = 2.2 lbs)
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A patient requires 150 mg of a medication and the available dose is 50 mg per tablet. How many tablets should be given?
A patient requires 150 mg of a medication and the available dose is 50 mg per tablet. How many tablets should be given?
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How many ounces are in 1.5 liters of fluid? (Use 1 liter = 33.814 ounces)
How many ounces are in 1.5 liters of fluid? (Use 1 liter = 33.814 ounces)
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What is the total height in centimeters for a person who stands 5 feet 6 inches tall? (Use 1 ft = 30.48 cm and 1 in = 2.54 cm)
What is the total height in centimeters for a person who stands 5 feet 6 inches tall? (Use 1 ft = 30.48 cm and 1 in = 2.54 cm)
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If 250 mg of a drug is available in a concentration of 5 mg per ml, how many milliliters are needed to achieve the required dose?
If 250 mg of a drug is available in a concentration of 5 mg per ml, how many milliliters are needed to achieve the required dose?
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How many tablets should be given to a patient if the doctor orders 0.2 g of Cemetidine when available in 400 mg per tablet?
How many tablets should be given to a patient if the doctor orders 0.2 g of Cemetidine when available in 400 mg per tablet?
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What is the strength expressed as a fraction for a solution containing 1 part solute in 4 parts solution?
What is the strength expressed as a fraction for a solution containing 1 part solute in 4 parts solution?
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What is the percentage strength for a solution with 1 part solute in 2 parts solution?
What is the percentage strength for a solution with 1 part solute in 2 parts solution?
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If there are 70g of a drug dissolved in 140ml of a solution, what is the strength of this solution expressed as a percentage?
If there are 70g of a drug dissolved in 140ml of a solution, what is the strength of this solution expressed as a percentage?
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For an infusion set with a drip rate of 20 drops/ml, how many drops would there be in a 250 ml fluid replacement?
For an infusion set with a drip rate of 20 drops/ml, how many drops would there be in a 250 ml fluid replacement?
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Which calculation gives the dosage in ml if the required dose is 150 mg and the available dose is 300 mg per 5 ml?
Which calculation gives the dosage in ml if the required dose is 150 mg and the available dose is 300 mg per 5 ml?
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If an iodine solution has a total volume of 40 mL with 10 mL of pure iodine, what is the strength of this solution expressed as a ratio?
If an iodine solution has a total volume of 40 mL with 10 mL of pure iodine, what is the strength of this solution expressed as a ratio?
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Study Notes
Important Terms
- The Household System is designed for measuring dosages at home using common containers like cups, teaspoons, and tablespoons.
- The Metric System is the easiest system to use and is also known as the International System of Units.
Approximate Equivalent Between Metric and Household Units
- This section likely contains a table or chart outlining conversions.
Metric Conversions: Weight
- To convert from heavier units to smaller units (e.g., kilograms to grams), multiply by 1000.
- To convert from smaller units to heavier units (e.g., milligrams to grams), divide by 1000.
Metric Conversions: Volume
- 1 liter (L) is equal to 1000 milliliters (ml).
- To convert from heavier units to smaller units (e.g., liters to milliliters), multiply by 1000.
- To convert from smaller units to heavier units (e.g., milliliters to liters), divide by 1000.
Exercises 1
- This section contains practice conversions between household and metric units, focusing on volume and weight.
Converting Height to Centimeters
- 1 foot (ft) is equal to 12 inches (in).
- 1 inch (in) is equal to 2.5 centimeters (cm).
- The example demonstrates converting 6ft 3in to centimeters.
Calculating Milliliters to Tablespoons
- 1 tablespoon (T) is equal to 15 milliliters (ml).
- The example demonstrates calculating the number of tablespoons in 22.5 ml.
Calculating Weight in Kilograms
- 1 kilogram (kg) is equal to 2.2 pounds (lbs).
- The example demonstrates converting 355 lbs to kilograms.
Oral Medications
- Oral medications can be in solid forms like tablets and capsules, measured in milligrams (mg), or liquid forms like syrup, measured in milliliters (ml).
Important Formulas
-
Required Dose X Stock Volume / Available Dose
- This formula helps calculate the required amount of medication based on available concentration.
Examples - Calculating Dosage
- These examples demonstrate applying the formula to calculate medication dosages for various scenarios.
Strength of Solutions: Ratios, Fractions, Percent
-
Strength = Solute / Solution
- Ratio expresses the proportion of solute to solution (e.g., 1:2).
- Fraction expresses the proportion as a fraction (e.g., 1/2).
- Percentage expresses the proportion of solute as a percentage (e.g., 50%).
Examples - Solution Strength
- The examples showcase how to express different solution strengths using ratios, fractions, and percentages.
Calculating Solution Strength
- These examples calculate the strength of solutions based on given solute and solution amounts, expressed in ratios, fractions, and percentages.
IV Infusions
- There are two types of infusion rate calculations for IV infusions:
- Drops per minute (drops/min): Applicable for gravity-fed fluid replacement.
- Milliliters per hour (ml/hour): Required for accurate infusions, smaller volumes, and syringe pumps, especially for drug infusion.
Giving Sets
- Standard or macro-drop set (SGS): Drip rate of 20 drops per ml (clear fluids) and 15 drops per ml (blood).
- Micro-drop set or burette: Drip rate of 60 drops per ml.
Infusion Set
- The text likely includes images or diagrams of macro-drop and micro-drop sets.
Infusion Pump & Syringe Pump
- The text likely includes images or diagrams of infusion and syringe pumps.
Flow Rates
-
Flow rate = Volume / Time
- The example demonstrates calculating the flow rate in ml/hour for a continuous IV infusion.
Finding the Volume Infused
- The example demonstrates calculating the total volume infused in ml over a specified time period.
Finding Duration of an Infusion
- The example demonstrates calculating the duration of an infusion based on the volume and flow rate.
Exercise: Calculating Total Infusion Time
- This exercise presents a scenario where the infusion rate changes, requiring the calculation of the total infusion duration for the entire process.
### Important Terms
- Household System (English System): designed for measuring dosages at home using common containers (cups, teaspoons, tablespoons, feet, pounds, pints).
- Metric System (SI): the easiest system to use for measurement, also known as the International System of Units. (cm, kg, ml, L).
Metric Conversions
-
Weight:
- When converting from heavier units to smaller units, multiply by 1,000.
- When converting from smaller units to heavier units, divide by 1,000.
-
Volume:
- There are 1,000 milliliters (ml) in 1 Liter (L).
- When converting from heavier units to smaller units, multiply by 1,000.
- When converting from smaller units to heavier units, divide by 1,000.
Oral Medications
-
Forms:
- Solid: tablets, capsules (measured in mg)
- Liquid: syrups (measured in ml)
Important Formulas
-
To calculate medication dosage:
- (Required Dose x Stock Volume) / Available Dose
Strength of Solutions as Ratios, Fractions, and Percentages
- Strength of a solution: Solute/Solution.
-
Example:
- 1:2 ratio = 1/2 fraction = 50%
IV Infusions
-
Two Types of Infusion Rate Calculations:
- Drops/min: for gravity-fed infusions (fluid replacement).
- ml/hour: for infusions needing accuracy or given in small volumes (infusion or syringe pumps, especially for drug infusions).
Giving Sets
- Standard or Macro-drop set (SGS): 20 drops per ml for clear fluids (sodium chloride, glucose), 15 drops per ml for blood.
- Micro-drop set or Burette: 60 drops per ml.
Flow Rates
- Formula: Flow Rate = Volume / Time
- Example: Normal Saline 1000ml continuous IV for 24 hours. Pump setting ml/hr = 1000 / 24 = 41.67 ml/hr (round up to 42 ml/hr).
Infusion Pump
- Used for accurately delivering specified volumes of fluid over a set period of time.
Syringe Pump
- Delivers precise volumes of fluid over a specified time, particularly for drugs or small volumes.
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Description
Test your knowledge on metric and household measurements with this interactive quiz. You'll explore conversions between common household containers and the metric system, along with weight and volume conversions. Perfect for anyone looking to sharpen their measurement skills!
