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Chapter 9
Calculations of Oral Liquid Doses
| Question | Answer |
|---|---|
| A physician orders amoxicillin 250 mg po tid for a child with an ear infection. Stock strength: amoxicillin 125 mg/5 mL What volume of medication is needed for one dose? | 10 mL |
| A physician orders cephalexin 375 mg po bid for a child. Stock strength: cephalexin 125 mg/5 mL What volume of medication is needed per dose? | 15 mL |
| A physician orders acetaminophen 160 mg po q4h prn for fever in a child. Stock strength: acetaminophen 80 mg/2.5 mL What volume of medication is needed per dose? | 5 mL |
| A physician orders trimethoprim/sulfamethoxazole 160 mg po bid for a UTI. Stock strength: trimethoprim/sulfamethoxazole 40 mg/5 mL What volume of medication is needed per dose? | 20 mL |
| A physician orders ibuprofen 50 mg po bid for a child with pain and inflammation. Stock strength: 15 mg/mL What volume of medication is needed per dose? Round to the nearest hundredth. | 3.33 mL |
| A physician orders lactulose 20 g po bid for a patient with hepatic encephalopathy. Stock strength: lactulose 10 g/15 mL What volume of medication is needed per dose? | 30 mL |
| A physician orders potassium chloride 750 mg po once daily for hypokalemia. Stock strength: potassium chloride 1.5 g/15 mL What volume of medication is needed per dose? | 7.5 mL |
| A physician orders lactulose 30,000 mg po q12h prn. Stock strength: lactulose 20 g/30 mL What volume of medication is needed per dose? | 45 mL |