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Chapter 37: Estimating Renal Function

Christopher M. Bland; S. Scott Sutton

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    AMA Citation
    Bland CM, Sutton S. Bland C.M., & Sutton S Bland, Christopher M., and S. Scott Sutton.Estimating Renal Function. In: Sutton S. Sutton S(Ed.),Ed. S. Scott Sutton.eds. McGraw-Hill's NAPLEX® Review Guide, 2e. McGraw-Hill; Accessed July 11, 2020. https://accesspharmacy.mhmedical.com/content.aspx?bookid=1452&sectionid=86250885
    APA Citation
    Bland CM, Sutton S. Bland C.M., & Sutton S Bland, Christopher M., and S. Scott Sutton. (2015). Estimating renal function. Sutton S. Sutton S(Ed.),Ed. S. Scott Sutton. McGraw-Hill's NAPLEX® Review Guide, 2e. McGraw-Hill. https://accesspharmacy.mhmedical.com/content.aspx?bookid=1452&sectionid=86250885
    MLA Citation
    Bland CM, Sutton S. Bland C.M., & Sutton S Bland, Christopher M., and S. Scott Sutton. "Estimating Renal Function." McGraw-Hill's NAPLEX® Review Guide, 2e Sutton S. Sutton S(Ed.),Ed. S. Scott Sutton. McGraw-Hill, 2015, https://accesspharmacy.mhmedical.com/content.aspx?bookid=1452&sectionid=86250885.

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Chapter 37: Estimating Renal Function

AR is a 50-year-old Caucasian woman who is 63 in tall and weighs 165 lb. Her current serum creatinine is 1.6 mg/dL. What is her ideal body weight (IBW)?

a. 125 lb

b. 115 lb

c. 135 lb

d. 165 lb

Answer b is correct.

IBW (women) = 45.5 + 2.3 (3 in over 5 ft) = 52.4 kg × 2.2 lb/1 kg = 115 lb

What is AR’s creatinine clearance as estimated by the Cockcroft-Gault equation?

a. 41 mL/min

b. 35 mL/min

c. 50 mL/min

d. 58 mL/min

Answer b is correct.

CrCl = [(140 − 50) × 52.4 kg /72 × 1.6 mg/dL] × 0.85 = ~35 mL/min

What is AR’s GFR as estimated by the MDRD equation?

a. 25 mL/min

b. 35 mL/min

c. 45 mL/min

d. 55 mL/min

Answer b is correct.

GFR = 186 × 1.6−1.154 × 50−0.203 × 0.742 = ~36 mL/min

TM is a 79-year-old African American man who is 71 in tall and weighs 254 lb. His current serum creatinine is 1.2 mg/dL. What is his ideal body weight (IBW)?

a. 145 lb

b. 156 lb

c. 166 lb

d. 254 lb

Answer c is correct.

IBW (man) = 50 + 2.3 (11 in over 5 ft) = 75.3 kg × 2.2 lb/1 kg = 166 lb

What is TM’s creatinine clearance as estimated by the Cockcroft-Gault equation?

a. 69 mL/min

b. 45 mL/min

c. 81 mL/min

d. 53 mL/min

Answer d is correct.

CrCl = (140 − 79) × 75.3 kg /72 × 1.2 mg/dL = ~53 mL/min

What is TM’s ...

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