Multiple step calculations

1. Prescribing Medication
January 16, 2014
Objective: multiple­step calculations
Jan 5­3:00 PM
HW worksheet pg. 29
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2. Prescribing Medication
January 16, 2014
Jan 6­11:41 AM
HW worksheet pg. 29
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3. Prescribing Medication
January 16, 2014
It may be necessary to convert from one unit to another first before
solving a dosage problem.
Steps:
1. Set up proportion
2. Convert to like units
3. Substitute converted unit into proportion
4. Cross multiply and solve.
Example: 240 mg are ordered. Medication is available in 2 grains/ 1 tablet.
How many tablets should be given?
For your warm up today ­ begin writing this information in your notes.
Remember that you should have notebook paper in your note book.
Jan 5­3:01 PM
HW worksheet pg. 29
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4. Prescribing Medication
January 16, 2014
Example 2:
Ordered: 0.016 gm
Available: 4 mg/1 ml
How many ml should be given?
Jan 5­3:03 PM
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5. Prescribing Medication
January 16, 2014
Example 3:
Ordered: gr xss orally
Available: 0.3 gm/5cc
How many cc's should be given?
Jan 5­3:04 PM
HW worksheet pg. 29
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6. Prescribing Medication
January 16, 2014
Example 4:
Ordered: Two tablespoons of a liquid every 2 hours for 12 hours.
How many cc's of the drug will the client receive over the 12 hour period?
Jan 5­3:16 PM
HW worksheet pg. 29
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7. Prescribing Medication
January 16, 2014
Example 5:
A client is to receive 2 gm of a drug. The drug comes 500mg/5cc.
Each vial contains 10 cc's. How many vials would you need?
Jan 5­3:18 PM
HW worksheet pg. 29
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8. Prescribing Medication
January 16, 2014
Bellwork
Ordered: 0.056 gm
Available: 8 mg/3 ml
How many ml should be given?
Jan 10­7:41 AM
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9. Prescribing Medication
January 16, 2014
Jan 16­11:13 AM
HW worksheet pg. 29
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10. Prescribing Medication
January 16, 2014
Jan 14­10:55 AM
HW worksheet pg. 29
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