ࡱ> ` S&bjbjss .dS808080800L^41L1111 Q Q Q$h|HTHV QHTHT115XWXWXWHT11XWHTXWXW|01(1 C80UZ}$.0^}R,W"RHRX QQXWRS/ Q Q QNW Q Q Q^HTHTHTHT$$ 63-274 Level 2 Lab Pediatric Calculation Practice Questions ANSWERS Doctors order: Digitoxin elixir 0.048 mg po, qd for a 1-month-old infant weighing 9 pounds. Recommended daily dose: 10 to 12 mcg/kg/day for a child under 2 years Digitoxin elixir is available as 100 mcg / mL Is the ordered individual dose safe?  Low: 10 mcg 9 lbs 1 kg 10 x 9 90 = 40.9 mcg/dose kg/day 2.2 lbs 2.2 2.2 Recommended Weight Conversion Dose  High: 12 mcg 9 lbs 1 kg 12 x 9 108 = 49.09 mcg/dose kg/day 2.2 lbs 2.2 2.2 Recommended Weight Conversion  Dose  Doctors Order: 0.048 mg 1000 mcg 1 day = 48 mcg = 48 mcg/dose day 1 mg dose dose Ordered Conversion Dose  Compare: Recommended Ordered dose Recommended Low dose High Dose 40.9 mcg 48 mcg 49.1 mcg Answer: The ordered dose fits within the recommended range therefore it is safe. Is the ordered daily dose safe? Answer: There is only one dose per day thus the ordered daily dose is the same as the ordered individual dose and it is safe. How many mL will you administer to this child? 0.048 mg 1 mL 1000 mcg 0.048 x 1000 48 = 0.48 mL dose 100 mcg 1 mg 100 100 dose Ordered Available Conversion Dose Drug Answer: I will administer 0.48 mL of digitoxin elixir to this child. Reference: Modified from Boston Reed College, Pharmacy Technician Training Program. Practice Problems - Dosage Calculations. Retrieved January 29, 2007 from:  HYPERLINK "http://www.bostonreed.com/students/coursematerials/pharmtech/ptweek19.pdf" http://www.bostonreed.com/students/coursematerials/pharmtech/ptweek19.pdf BMcLaughlin Jan07 2. Doctors order: Versed 1 mg IM stat preoperatively for a child weighing 30.8 pounds. The recommended dosage of Versed is 0.05 to 0.1 mg/kg per dose preoperatively. Versed is available in 10 mg per mL vials. Is the ordered individual dose safe?  Low: 0.05 mg 30.8 lbs 1 kg 0.05 x 30.8 1.54 = 0.7 mg/dose kg/dose 2.2 lbs 2.2 2.2 Recommended Weight Conversion Dose  High: 0.1 mg 30.8 lbs 1 kg 0.1 x 30.8 3.08 = 1.4 mg/dose kg/dose 2.2 lbs 2.2 2.2 Recommended Weight Conversion Dose Compare: Recommended Ordered dose Recommended Low dose High Dose 0.7 mg 1 mg 1.4 mg Answer: The ordered dose fits within the recommended range therefore it is safe. Is the ordered daily dose safe? Answer: There is only one dose per day thus the ordered daily dose is the same as the ordered individual dose and it is safe. How many mL will you administer to this child? 1 mg 1 mL 1 = 0.1 mL / dose dose 10 mg 10 Ordered Available Dose Drug Answer: I will administer 0.1 mL of versed to this child. Reference: Modified from Boston Reed College, Pharmacy Technician Training Program. Practice Problems - Dosage Calculations. Retrieved January 29, 2007 from:  HYPERLINK "http://www.bostonreed.com/students/coursematerials/pharmtech/ptweek19.pdf" http://www.bostonreed.com/students/coursematerials/pharmtech/ptweek19.pdf BMcLaughlin Jan07 3. Doctors order: Fentanyl 0.025 mg IV preoperatively for a child weighing 26 pounds. The recommended dosage of fentanyl IV preoperatively is 1 to 2 mcg/kg/dose. Fentanyl is available as 0.05 mg/mL. Is the ordered individual dose safe?  Low: 1 mcg 26 lbs 1 kg 26 = 11.8 mcg/dose kg/dose 2.2 lbs 2.2 Recommended Weight Conversion Dose  High: 2 mcg 26 lbs 1 kg 2 x 26 52 = 23.6 mcg/dose kg/dose 2.2 lbs 2.2 2.2 Recommended Weight Conversion Dose  Doctors Order: 0.025 mg 1000 mcg 1 day 0.025 x 1000 = 25 mcg/dose dose 1 mg dose Ordered Conversion Dose  Compare: Recommended Recommended Ordered Low dose High Dose Dose 11.8 mcg 23.6 mcg 25 mcg Answer: The ordered dose does not fit within the recommended range therefore it Is not safe. Is the ordered daily dose safe? Answer: There is only one dose per day thus the ordered daily dose is the same as the ordered individual dose and it is not safe. How many mL will you administer to this child? Answer: Zero. I will clarify this dose of fentanyl with the doctor. Reference: Modified from Boston Reed College, Pharmacy Technician Training Program. Practice Problems - Dosage Calculations. Retrieved January 29, 2007 from:  HYPERLINK "http://www.bostonreed.com/students/coursematerials/pharmtech/ptweek19.pdf" http://www.bostonreed.com/students/coursematerials/pharmtech/ptweek19.pdf BMcLaughlin Jan07 4. Doctors order: Codeine 20 mg p.o. q3h p.r.n., pain for a child who weighs 88 pounds. Recommended daily dose: 0.5 mg/kg/dose, not to exceed 6 doses per day. Codeine liquid is available as 15 mg/mL. Is the ordered individual dose safe?  Recommended: 0.5 mg 88 lbs 1 kg 0.5 x 88 44 = 20 mg/dose kg/dose 2.2 lbs 2.2 2.2 Recommended Weight Conversion Dose  Compare: Recommended Ordered Dose Dose 20 mg 20 mg Answer: The ordered dose is the same as the recommended individual dose, therefore it is safe. Is the ordered daily dose safe?  24 hours 1 dose 24 = 8 doses day q3h 3 Answer: The number of doses per day exceeds the recommended, thus it is not a safe daily dose. How many mL will you administer to this child? Answer: Zero, until I clarify the frequency of administration of this dose with the doctor. d) If the ordered frequency is every 4 hours, how many mL will you administer? 20 mg 1 mL 20 4 = 1.3 mL dose 15 mg 15 3 Ordered Available Dose Drug Answer: If the child has pain, I will administer 1.3mL of codeine. Reference: Modified from Boston Reed College, Pharmacy Technician Training Program. Practice Problems - Dosage Calculations. 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