Application of GFR estimation equations in elderly patients with measured GFR below 60 mL/min/1.73 m 2
Aging Clinical and Experimental Research(2019)
Abstract
Background Estimated glomerular filtration rate (eGFR) equations can be inaccurate when applied to elderly patients. Newly, the full-age-spectrum (FAS) equation was developed for use in elderly patients. Aim We compared the available eGFR equations in elderly Chinese patients with mGFRs < 60 mL/min/1.73 m 2 . Methods Measured glomerular filtration rates (mGFRs) were obtained using 99m Tc-DTPA (diethylene-triamine-pentaacetic acid) scans, 220 patients ≥ 80 years with mGFRs < 60 mL/min/1.73 m 2 were enrolled. Serum creatinine (SCr) levels were measured simultaneously, and eGFRs based on SCr were calculated using four formulas: the modification of diet in renal disease (MDRD), chronic kidney disease epidemiology collaboration (CKD-EPI-SCr), Berlin initiative study (BIS1), and the FAS-SCr equations. Results All the equations tended to overestimate GFR. The FAS-SCr equation provided the least bias (1.84), the highest proportion of eGFR within 30% of mGFR (P30, 72.7%), the bias and P30 of the BIS1 equation were 3.45 and 72.3%, respectively. In patients with mGFRs of 30–60 mL/min/1.73 m 2 , the BIS1 and FAS-SCr equations demonstrated better performances than the MDRD and CKD-EPI-SCr equations. While in patients with mGFR < 30 mL/min/1.73 m 2 , the accuracy of all equations was poor. Discussion In older patients with mGFRs of 30–60 mL/min/1.73 m 2 , the BIS1 and the FAS-SCr equations exhibited good performance, none of the equations based on SCr were suitable for older subjects with mGFRs < 30 mL/min/1.73 m 2 . Conclusions The BIS1 and FAS-SCr equations may be optimal for older patients with moderately reduced kidney function.
MoreTranslated text
Key words
Elderly patients,Equation,Serum creatinine,Glomerular filtration rate
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined