Cockcroft-Gault and MDRD estimates do not accurately measure kidney function in which group?

Prepare for the ITE Nephrology Test with a comprehensive study guide. Engage with flashcards and multiple-choice questions. Each question provides hints and explanations to help you succeed!

Multiple Choice

Cockcroft-Gault and MDRD estimates do not accurately measure kidney function in which group?

Explanation:
The main issue is that these creatinine-based estimates assume stable kidney function and steady creatinine production. In pregnancy, kidney function changes dramatically: GFR rises by roughly 50%, plasma volume expands, and creatinine production and serum levels shift downward. Serum creatinine decreases even when GFR is higher, so the MDRD and Cockcroft-Gault formulas—calibrated in nonpregnant populations and relying on creatinine—do not reliably reflect true kidney function during pregnancy. Therefore, pregnant women are the group in which these estimates are not accurate. In practice, direct GFR measurements or alternative markers may be needed, since standard equations aren’t validated for pregnancy.

The main issue is that these creatinine-based estimates assume stable kidney function and steady creatinine production. In pregnancy, kidney function changes dramatically: GFR rises by roughly 50%, plasma volume expands, and creatinine production and serum levels shift downward. Serum creatinine decreases even when GFR is higher, so the MDRD and Cockcroft-Gault formulas—calibrated in nonpregnant populations and relying on creatinine—do not reliably reflect true kidney function during pregnancy. Therefore, pregnant women are the group in which these estimates are not accurate. In practice, direct GFR measurements or alternative markers may be needed, since standard equations aren’t validated for pregnancy.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy