Effect of preoperative systolic blood pressure on acute kidney injury after coronary artery bypass grafting
10.3760/cma.j.cn112434-20200208-00031
- VernacularTitle:术前收缩压对冠状动脉旁路移植术后急性肾损伤的影响
- Author:
Hui ZHENG
;
Guoliang FAN
;
Zhengqing WANG
;
Zhigang LIU
;
Xuefen LI
- From:
Chinese Journal of Thoracic and Cardiovascular Surgery
2021;37(5):297-302
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe the risk factors of acute renal injury(AKI) after coronary artery bypass grafting(CABG) and the influence of blood pressure on AKI.Methods:980 patients in CABG of Cardiology Department of TEDA International Cardiovascular Hospital were diagnosed with AKI according to the AKIN standard, with 706 males and 274 females, averaged(61.9±8.0)years old. Patients were divided into two groups according to whether AKI occurred: AKI group(86 cases) and non AKI group(894 cases). The baseline clinical data, operation related data were compared between the two groups. At the same time, according to the preoperative mean systolic blood pressure(SBP) level, LSP[mean systolic blood pressure<120 mmHg(1 mmHg=0.133 kPa), 374 cases], MSP(mean systolic blood pressure 120-140 mmHg, 481 cases) and HSP(mean systolic blood pressure≥140 mmHg, 125 cases) were classified as covariates, and the influencing factors of dependent variable AKI were analyzed by multivariate logistic regression.Results:The prevalence of AKI was 8.7%(86/980). Compared with non-AKI group, preoperative SBP[(129.8±13.8)mmHg vs.(124.4±13.3)mmHg, P=0.000], mean arterial pressure[(91.9±8.8)mmHg vs.(88.8±9.1)mmHg, P=0.004], and mean pulse pressure[(56.9±10.7)mmHg vs.(53.2±9.8)mmHg, P=0.001]were increased significantly. After adjusted for other risk factors, preoperative SBP elevation, hypertension history, cardiopulmonary bypass(CPB), use of intra-aortic-balloon-pump(IABP), secondary thoracotomy, preoperative diuresis, intraoperative blood transfusion and baseline low glomerular filtration rate(eGFR) were independent risk factors for AKI after CABG. Compared with LSP group, the relative risk of AKI after CABG in HSP group was 2.743(95% CI: 1.595-4.715). In patients with hypertension history, AKI in HSP group was significantly higher than that in LSP group(18.4% vs. 8.1%, P=0.001). However, the preoperative blood pressure level of patients who denied the history of hypertension had no effect on AKI. Conclusion:Preoperative SBP is a risk factor for AKI after CABG. The incidence of AKI after CABG can be significantly reduced by controlling SBP below 140 mmHg in patients with hypertension.
