Abstract: Abstract： Objective To investigate the correlation of short-term systolic blood pressure variability (SBPV) with esti⁃ mated glomeruar filtration rate (eGFR) in the elderly. Methods In physical examination for the third time of kailuan group, the method of cluster sampling was used to collect randomly retired employees, age ≥60 in kailuan group. The 24-hour am⁃ bulatory blood pressure monitoring was given to these objects. Finally, 1 405 participants with integral data were recruited in⁃ to the survey. SBPV indices were standard deviation of systolic blood pressure (SD), variability independent of the mean (VIM), maximum-minimum difference (MMD), and average real variability (ARV). Multivariate stepwise linear regression models were used to analyze the influence of short-term SBPV on eGFR. Results (1) Among 1 405 participants (67.16± 5.82) years, 933 individuals (66.4%) were male and 472 (33.6%) were female. (2) Study population were divided into four groups based on the 24-hour mean SBP, daytime mean SBP, night time mean SBP (group 1: mean SBP<120 mmHg, group 2: 120≤mean SBP＜140 mmHg, group 3: 140≤mean SBP＜160 mmHg, group 4: mean SBP≥160 mmHg), respectively. Values of SD, MMD and ARV, but not VIM were increased with increased mean SBP. (3) The participants were grouped according to the median SBPV with between-group comparison of the eGFR. The average eGFR levels were lower in the high 24-hour SB⁃ PV group (SD, VIM, MMD and ARV), day-time SBPV group (SD, VIM, MMD and ARV) and night-time SBPV group (SD, MMD and ARV) than those in the low SBPV groups (P < 0.05). (4) Multivariate stepwise linear regression showed that eGFR increased with 3 indices of 24-hour SBPV (SD, MMD and ARV) and 2 indices of day-time SBPV (MMD and ARV) but not for night-time SBPV (β=-0.07, -0.11, -0.07, -0.12 and -0.07, respectively). Conclusion There is a certain degree of asso⁃ ciation between short -term SBPV indices and eGFR.

Key words: blood pressure, blood pressure monitoring, ambulatory, glomerular filtration rate, aged, systolic blood pressure variability