Hemodialysis access type is associated with blood pressure variability and echocardiographic changes in end-stage renal disease patients

  • Ruoxi Liao
  • Liya Wang
  • Jiameng Li
  • Liping Lin
  • Si Sun
  • Yunqin Xiong
  • Yupei Li
  • Mei Han
  • Baihai SuEmail author
Original Article


Arteriovenous fistula (AVF) strategy has been recommended in clinical guidelines for a long time due to the survival benefits associated with it. However, the underlying mechanism still needs to be explored. This retrospective cohort study included 611 patients who received hemodialysis in West China Hospital Medical Center between January 1, 2014 and December 31, 2014. Patient characteristics, dialysis parameters, and 1-year blood pressure records were collected at baseline. Echocardiographic changes and clinical outcomes were assessed during the 59-month follow-up. Our study showed that fistulas were associated with lower long-term systolic blood pressure (SBP) standard deviation (SD) (P < 0.0001), lower long-term SBP residual metric (P < 0.0001), and lower intradialytic SBP residual (P = 0.001). Fistulas were also associated with a higher but non-significant proportion of the newly developed left ventricular (LV) hypertrophy (8.29% vs. 6.78%, P = 0.116) and increased LV volume (8.29% vs. 4.52%, P = 0.139), as well as a lower proportion of the newly developed left ventricular ejection fraction (LVEF) dysfunction (1.62% vs. 2.82%, P = 0.586). After a median of 59-month follow-up, catheter group showed a higher risk of cardiovascular events (hazard ratio [HR] 1.21; 95% confidence interval [95%CI] 1.01–1.52), all-cause infection (HR 1.25; 95%CI 1.07–1.47), and access-related infection (HR 2.88; 95%CI 1.76–4.68). However, the advantage of fistulas only retained in low-albumin subgroup (serum albumin < 40 g/l) except for access-related infections. Our results suggested the possible attribution of BPV and other patient factors to fistula-associated survival benefits.


Hemodialysis Vascular access Blood pressure Echocardiography Prognosis 



We gratefully acknowledge all the clinicians, statisticians, and laboratory technicians who contributed to this study.


This work was financially sponsored by the National Natural Science Foundation of China (Grant no. 51433007-1), the State Key Research Development Program of China (Grant no. 2016YFC1103004), and the Key Project of Research and Development of Science and Technology Department of Sichuan Province (Grant no. 2018FZ0102).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.

Supplementary material

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Supplementary material 1 (DOCX 14 KB)
40620_2018_574_MOESM2_ESM.pdf (199 kb)
Supplementary material 2 (PDF 198 KB)


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Copyright information

© Italian Society of Nephrology 2019

Authors and Affiliations

  1. 1.Department of Nephrology, West China HospitalSichuan UniversityChengduChina

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