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Phenylephrine and nafazolin solutions are used as decongestants to relieve nasal congestion. Your patient has been given the following prescription below. You need to prepare 100 g of this nasal spray and make it isotonic. 1. There is an available 25% w/w Phenylephrine solution in the pharmacy. How many g of this solution will you need to supply the needed 0.5% of the patient? A. 1.0 g B. 1.5 g C. 2.0 g D. 4.0 g

Phenylephrine and nafazolin solutions are used as decongestants to relieve nasal congestion. Your patient has been given the following prescription below. You need to prepare 100 g of this nasal spray and make it isotonic. 1. There is an available 25% w/w Phenylephrine solution in the pharmacy. How many g of this solution will you need to supply the needed 0.5% of the patient? A. 1.0 g B. 1.5 g C. 2.0 g D. 4.0 g

Curren'S Math For Meds: Dosages & Sol
Curren'S Math For Meds: Dosages & Sol
11th Edition
ISBN:9781305143531
Author:CURREN
Publisher:CURREN
Chapter10: Reconstitution Of Powdered Drugs
Section: Chapter Questions
Problem 7.2P
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Phenylephrine and nafazolin solutions are used as decongestants to relieve nasal congestion. Your patient has been given the following prescription below. You need to prepare 100 g of this nasal spray and make it isotonic. 1. There is an available 25% w/w Phenylephrine solution in the pharmacy. How many g of this solution will you need to supply the needed 0.5% of the patient? A. 1.0 g В. 1.5 g С. 2.0 g D. 4.0 g 2. Given the amount calculated on the previous item, and if the E value of phenylephrine HCl is 0.32, calculate its corresponding sodium chloride tonicic equivalent. А. 0.16 B. 0.64 С. 1.60 D. 6.40 3. If the E value of nafazolin is 0.27, what is the sodium chloride tonicic equivalent of the patient's needed nafazolin? A. 0.0135 B. 0.1350 1.3500 D. 13.500 4. What is the combined sodium chloride tonicic equivalent of the remaining ingredients (edetate disodium (E =0.24) and sodium metabisulfite (E = 0.7)? A. 1.060 B. 0.106 С. 1.290 D. 0.129 5. To make the solution isotonic, what should be the total tonicic sodium chloride content of the spray? A. 0.090 g В. 0.900 g C. 9.000 g D. 0.009 g 6. How much sodium chloride in grams must be added to make the nasal spray isotonic? A. 0.0621 g B. 0.1242 g C. 0.1405 g D. 0.6205 g 7. Should a readily available normal saline is present in the laboratory instead of NaCl powders, how many mL of this solution must be used to make the solution isotonic? A. 1.38 mL B. 6.90 mL C. 15.61 mL D. 68.94 mL 8. If ever sodium chloride is not present in the compounding laboratory, boric acid may be used (E = 0.52). Should this be the case, how many grams of boric acid must be added in lieu of sodium chloride? A. 0.0064 g B. 0.1194 g C. 0.2702 g D. 1.1932 g
Transcribed Image Text:Phenylephrine and nafazolin solutions are used as decongestants to relieve nasal congestion. Your patient has been given the following prescription below. You need to prepare 100 g of this nasal spray and make it isotonic. 1. There is an available 25% w/w Phenylephrine solution in the pharmacy. How many g of this solution will you need to supply the needed 0.5% of the patient? A. 1.0 g В. 1.5 g С. 2.0 g D. 4.0 g 2. Given the amount calculated on the previous item, and if the E value of phenylephrine HCl is 0.32, calculate its corresponding sodium chloride tonicic equivalent. А. 0.16 B. 0.64 С. 1.60 D. 6.40 3. If the E value of nafazolin is 0.27, what is the sodium chloride tonicic equivalent of the patient's needed nafazolin? A. 0.0135 B. 0.1350 1.3500 D. 13.500 4. What is the combined sodium chloride tonicic equivalent of the remaining ingredients (edetate disodium (E =0.24) and sodium metabisulfite (E = 0.7)? A. 1.060 B. 0.106 С. 1.290 D. 0.129 5. To make the solution isotonic, what should be the total tonicic sodium chloride content of the spray? A. 0.090 g В. 0.900 g C. 9.000 g D. 0.009 g 6. How much sodium chloride in grams must be added to make the nasal spray isotonic? A. 0.0621 g B. 0.1242 g C. 0.1405 g D. 0.6205 g 7. Should a readily available normal saline is present in the laboratory instead of NaCl powders, how many mL of this solution must be used to make the solution isotonic? A. 1.38 mL B. 6.90 mL C. 15.61 mL D. 68.94 mL 8. If ever sodium chloride is not present in the compounding laboratory, boric acid may be used (E = 0.52). Should this be the case, how many grams of boric acid must be added in lieu of sodium chloride? A. 0.0064 g B. 0.1194 g C. 0.2702 g D. 1.1932 g
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