Clinical study of the new intelligent determination and analysis system for glomerular filtration rate

Abstract

To discuss the clinical application value of determining glomerular filtration rate(GFR) with the new intelligent determination and analysis system for GFR (B&G System). GFR of 216 hospitalized patients suffering from the different diseases was determined accurately by clearance rate of (99m)Tc-diethylene triamine pentaacetic acid ((99m)Tc-DTPA) (Tc-GFR), and the serum creatinine (SCr) and blood urea nitrogen (BUN) were also determined. At the same time GFR was determined by B&G system and Robert formula (B&G-GFR, Robert-GFR), and creatinine clearance rate (CCr) and GFR were calculated by Cockcroft/Gault formula(CG-CCr-GFR). All the results were compared, and correlation analysis was done for the three groups of data. Among 216 patients, B&G-GFR and Tc-GFR in 106 patients with renal insufficiency and 110 patients with normal renal function showed no significant difference (ml · min(-1)· 1.73 m(-2): 29.13 ± 18.96 vs. 32.28 ± 25.03, 121.13 ± 49.79 vs. 118.48 ± 43.25, both P >0.05), while Robert-GFR (ml · min(-1) · 1.73 m(-2): 21.45 ± 15.67, 93.54 ± 30.01) and CG-CCr-GFR (ml · min(-1) · 1.73 m(-2): 11.87 ± 8.69, 86.27 ± 21.44)were significantly lower than Tc-GFR (P<0.05 or P <0.01 ). The values of B&G-GFR, Robert-GFR, CG-CCr-GFR and Tc-GFR in renal insufficiency group (ml · min(-1) · 1.73 m(-2) :6.15 ± 14.07, 13.83 ± 11.36, 23.41 ± 24.34) were respectively significantly lower than that of normal renal function group (ml · min(-1) · 1.73 m(-2):7.65 ± 6.54, 24.94 ± 13.24, 32.21 ± 21.81, all P <0.05). B&G-GFR, Robert-GFR, and CG-CCr-GFR of both groups were positively correlated with Tc-GFR (P<0.05 or P <0.01), but negatively correlated with SCr (P<0.05 or P <0.01). B&G-GFR, Robert-GFR and CG-CCr-GFR , to a certain extent, do accurately reflect GFR. However, B&G-GFR is more accurate than others, and it can take the place of Tc-GFR clinically. B&G system has the advantage of accuracy, simplicity, speed, safety and low-price compared with other methods for the determination of GFR, and it warrants popularization.