In the creatinine clearance calculation, which constant is used to adjust for body surface area?

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Multiple Choice

In the creatinine clearance calculation, which constant is used to adjust for body surface area?

Explanation:
Normalizing renal function tests to a standard body size lets us compare creatinine clearance across people with different physiques. In practice, creatinine clearance values are adjusted to a body surface area of 1.73 m^2. This is done by multiplying the calculated clearance by the ratio 1.73 divided by the individual’s actual body surface area (CrCl × 1.73 / BSA). The fixed reference constant used in this adjustment is 1.73 m^2. Using this standard allows reporting CrCl as mL/min per 1.73 m^2, making values meaningful across patients of varying sizes.

Normalizing renal function tests to a standard body size lets us compare creatinine clearance across people with different physiques. In practice, creatinine clearance values are adjusted to a body surface area of 1.73 m^2. This is done by multiplying the calculated clearance by the ratio 1.73 divided by the individual’s actual body surface area (CrCl × 1.73 / BSA). The fixed reference constant used in this adjustment is 1.73 m^2. Using this standard allows reporting CrCl as mL/min per 1.73 m^2, making values meaningful across patients of varying sizes.

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