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Cockcroft-Gault Equation for Creatinine Clearance Calculation
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Cockcroft-Gault Equation for Creatinine Clearance Calculation

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Questions and Answers

How many drops/minute should be given to administer 25 mg of the drug per hour with an infusion set that delivers 10 drops/ml?

  • 15
  • 8 (correct)
  • 18
  • 23
  • If a prescription calls for 10 mg of the active ingredient, what is the aliquot quantity?

  • 200 mg
  • 140 mg (correct)
  • 80 mg
  • 100 mg
  • How many grams of bismuth subsalicylate are needed for 50 suppositories?

  • 140 g (correct)
  • 210 g
  • 70 g
  • 280 g
  • If a hyperalimentation fluid needs the addition of 30 mEq of K+, how many milliliters of the solution should be used?

    <p>12 ml</p> Signup and view all the answers

    For a patient requiring 5000 kcal daily, with 700 kcal from protein, what volume of fat, amino acid, and dextrose are required according to the mentioned percentages?

    <p>Fat: 1500 ml, Amino Acid: 300 ml, Dextrose: 200 ml</p> Signup and view all the answers

    If a vial contains 2mg/ml of a drug and you need to administer 30 mg, how many milliliters should be withdrawn from the vial?

    <p>13 ml</p> Signup and view all the answers

    What parts of a 15% lotion and a 3% lotion should be combined to attain the desired concentration for the acne lotion?

    <p>3 parts 15% and 5 parts 3%</p> Signup and view all the answers

    In preparing the Magnesium Citrate prescription, how many milliliters (mL) of glycerin are needed?

    <p>12</p> Signup and view all the answers

    For the Cefazolin reconstitution, how many milliliters (mL) of sterile water should be added to prepare a 400 mg/mL concentration from a 500 mg vial?

    <p>1</p> Signup and view all the answers

    In the given prescription, how much B-caine should be used to prepare 5 pounds of the product?

    <p>216 g</p> Signup and view all the answers

    To prepare a compound with a 1:15 ratio of E.S. to diluent, how much diluent should be combined with 200 mg of E.S.?

    <p>2800 mg</p> Signup and view all the answers

    If each capsule contains 0.4 mg atropine, how many milligrams of a 1:25 trituration of atropine should be used for a prescription requiring 40 capsules?

    <p>$\frac{16}{5}$ mg</p> Signup and view all the answers

    What is the estimated creatinine clearance using the Cockcroft-Gault equation for a 50 year old male patient who weighs 140 pounds and measures 66 inches, with a serum creatinine of 1.5 mg/dL?

    <p>38.7 mL/min</p> Signup and view all the answers

    What is the nitrogen balance for a patient with a 24-hour protein intake of 80 g and urinary urea nitrogen collection of 30 g?

    <p>Positive 6g</p> Signup and view all the answers

    Calculate the serum creatinine level for a patient with an estimated creatinine clearance of 40 mL/min, weighing 120 pounds and measuring 64 inches.

    <p>1.1 mg/dL</p> Signup and view all the answers

    What is the daily fluid requirement for a 60 year old patient who weighs 165 pounds and measures 68 inches?

    <p>2700 mL/day</p> Signup and view all the answers

    If a patient's total cholesterol is 200 mg/dL, HDL is 50 mg/dL, and TRG is 70 mg/dL, what would be the LDL level?

    <p>120 mg/dL</p> Signup and view all the answers

    A patient's estimated creatinine clearance is 48 mL/min and their serum creatinine level is 1.6 mg/dL. What would be the patient's age if they weigh 130 pounds and measure 62 inches?

    <p>54 years old</p> Signup and view all the answers

    What is the pH of the buffer prepared by mixing 40 mL of 0.1 M acetic acid with 60 mL of 0.1 M sodium acetate? (pKa of acetic acid is 4.76)

    <p>4.8</p> Signup and view all the answers

    How many grams of sodium acetate (MW = 82 g/mol) are needed to prepare a 250 mL buffer solution with pH 5.2 using 0.1 M acetic acid and sodium acetate? (pKa of acetic acid is 4.76)

    <p>4.10 g</p> Signup and view all the answers

    In the preparation of 500 mL of a buffer solution at pH 6.5 using 0.2 M benzoic acid (pKa = 4.20) and sodium benzoate, how many milliliters of 0.1 M sodium benzoate should be added?

    <p>400 mL</p> Signup and view all the answers

    Calculate the pH of a buffer solution prepared by mixing 25 mL of 0.2 M chloroacetic acid with 75 mL of 0.1 M sodium chloroacetate. The pKa of chloroacetic acid is 2.86.

    <p>3.6</p> Signup and view all the answers

    If you want to prepare a buffer solution with a pH of 8.0 using 0.15 M hypochlorous acid (pKa = 7.54) and sodium hypochlorite, how many milliliters of 0.1 M sodium hypochlorite should be mixed with 40 mL of the acid?

    <p>70 mL</p> Signup and view all the answers

    What volume of 0.05 M hydrochloric acid should be added to 50 mL of 0.1 M sodium hydroxide to prepare a buffer solution with a pH of 10? (Hint: pKa of HCl is very low)

    <p>40 mL</p> Signup and view all the answers

    What is the amount of liothyronine needed to compound the capsules?

    <p>1.4 mg</p> Signup and view all the answers

    How many grams of diluent are required to compound the capsules?

    <p>13.5 g</p> Signup and view all the answers

    If you need to prepare 700 mL of 25% ethanol, how much 70% ethanol should be mixed with 20% ethanol?

    <p>400 mL of 70% ethanol</p> Signup and view all the answers

    For a new formula with Lidocaine 5%, Epinephrine 1:3000, Tetracaine 1%, and Gel base, how much gel base would be needed to compound this formula?

    <p>28 g</p> Signup and view all the answers

    If you have to make 120 mL of the Pilocarpine HCl spray, and only have Pilocarpine HCl 10% solution and Oralube, what volumes do you need?

    <p>Pilocarpine HCl = 18 mL; Oralube = 102 mL</p> Signup and view all the answers

    If a bedridden patient needs enteral nutrition at a rate of 30 kcal/kg/day, how many total calories per day would a patient weighing 160 lb need?

    <p>$1680 kcal/day$</p> Signup and view all the answers

    Study Notes

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    Practice calculating estimated creatinine clearance using the Cockcroft-Gault equation for different patient scenarios. Age, gender, weight, height, and serum creatinine values are provided for each case.

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