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Chinese Journal of Kidney Disease Investigation(Electronic Edition) ›› 2024, Vol. 13 ›› Issue (05): 241-248. doi: 10.3877/cma.j.issn.2095-3216.2024.05.001

• Original Articles •    

Analysis of risk factors for short-term poor prognosis in cardiology-wards patients undergoing renal replacement therapy due to acute kidney injury

Xiaolong Wang1, Jie Wu1,(), Zhe Feng1, Hao Wen1, Shuwei Duan1, Shuang Liang1, Guangyan Cai1   

  1. 1.Department of Nephrology, First Medical Center of Chinese PLA General Hospital, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Diseases, Beijing 100853, China
  • Received:2023-11-16 Online:2024-10-28 Published:2024-11-18
  • Contact: Jie Wu

Abstract:

Objective

To investigate the clinical characteristics and analyze the risk factors for short-term poor prognosis in cardiology-wards patients undergoing renal replacement therapy (RRT) due to acute kidney injury (AKI).

Methods

A retrospective analysis was performed on AKI patients treated with RRT in the Cardiology Department of the First Medical Center of the Chinese PLA General Hospital from January 1,2009 to December 31,2018. The AKI patients' data were collected,including demography,concomitant diseases,etiology of AKI,vital signs at RRT initiation,laboratory results,duration of RRT treatment,indications for RRT,vasoactive inotropic score (VIS),norepinephrine equivalent (NEE),acute physiologic assessment and chronic health evaluation II (APACHE II) score,duration of critical and severe illness,and the patients' survival plus renal prognosis at 28 days after RRT treatment. According to the patients' prognosis,they were divided into a survival group and a death group. These AKI patients were divided into a survival group and a death group according to the prognosis,while risk factors affecting the prognosis were analyzed by logistic regression method.

Results

A total of 143 AKI patients were enrolled,of which 91 (63.6%) were males,whose median age was 75.0 (65.0,81.0) years,among whom a total of 87 patients died after 28 days,with a mortality rate of 60. 8%. Most of the patients had multiple underlying diseases at the time,and the main cause of AKI was renal hypoperfusion (63.3%),but the main RRT indication was volume overload (81.1%). After 4 weeks of RRT treatment,56 patients survived,of whom 14 (25%) were able to be off dialysis while 42 (75%) still required dialysis. The APACHE Ⅱscore of the total enrolled AKI patients was (20.65 ±5.63),but there was no significant difference between the two groups (P=0.187). The death group disclosed higher scores of VIS and NEE than the survival group(P < 0. 05). Univariate logistic regression analysis showed that advanced age,low body mass index(BMI),low mean arterial pressure,high hemoglobin,low creatinine at initiation of RRT,prothrombin time(PT),prolonged plasma activated partial thrombin time,cerebral infarction/cerebral hemorrhage,acute myocardial infarction,and high VIS/NEE score were risk factors for the patients' death. Multivariate logistic regression analysis showed that low BMI (OR =0.794,95%CI: 0.648-0.930,P =0.004),low serum creatinine at initiation of RRT (OR =0. 736,95% CI: 0. 558-0. 971,P =0. 030),and prolonged PT(OR=1.019,95%CI:1.004-1.035,P=0.016) were risk factors for the patients' death.

Conclusion

Low BMI at admission,low creatinine at RRT initiation,and prothrombin time prolongation were risk factors for death in the patients undergoing RRT due to AKI in the cardiology wards.

Key words: Cardiology department, Renal replacement therapy, Mortality rate

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