[Renal function evaluation methods in the elderly: reliability and clinical implications]

Area of Science:

• Nephrology
• Geriatrics
• Epidemiology

Context:

• Chronic renal disease (CRD) prevalence is high in elderly populations, affecting one-third of those over 65 in Spain.
• Early detection and management of CRD are crucial for improving patient survival and reducing cardiovascular complications.
• Current evaluation of renal function relies on glomerular filtration rate (GFR), but serum creatinine alone is insufficient.

Purpose:

• To evaluate the utility of predictive equations for diagnosing, classifying, and managing CRD in the elderly.
• To compare the accuracy and precision of the Modification of Diet in Renal Disease (MDRD-4) equation versus the Cockcroft-Gault formula in this demographic.

Summary:

• Predictive equations are valuable tools for CRD management in elderly patients.
• The MDRD-4 equation demonstrates superior precision and accuracy compared to the Cockcroft-Gault formula in the elderly population.
• The Cockcroft-Gault formula remains useful for rapid estimations and drug adjustments, provided its limitations are acknowledged.

Impact:

• Implementing accurate GFR estimation methods can enhance patient outcomes and reduce healthcare burdens associated with CRD.
• This study supports the use of the MDRD-4 equation as the preferred method for assessing renal function in elderly CRD patients.
• Improved CRD management strategies can mitigate associated cardiovascular morbidity and mortality, as well as the risk of drug-induced harm.