Key result
An overhydration increase of 1 L was associated with a 0.523 m/s rise in pulse wave velocity before hemodialysis, indicating hydration status is a major determinant of arterial stiffness.
Why the study?
Does a single hemodialysis session affect arterial stiffness and hydration status in hemodialysis patients?
Observational (n=71)
Does a single hemodialysis session affect arterial stiffness and hydration status in hemodialysis patients?
Effect estimate: 0.523 m/s rise per 1 L OH increase
Hydration status and blood pressure are major determinants of arterial stiffness in hemodialysis patients.
Supports hydration assessment in hemodialysis; hypothesis-generating for whether volume correction reduces arterial stiffness.
Arterial stiffness is evaluated with the measurement of pulse wave velocity (PWV), while overhydration (OH) and nutritional status are evaluated with bioimpedance spectroscopy (BIS). In this study, we investigated the effect of a single dialysis session on arterial stiffness, hydration status, and laboratory parameters. The observational, cross-sectional, cohort study included 71 HD patients with mean age 64 ± 16 yrs. A Complior device was used to perform PWV measurements. The patients were examined immediately before and 15 min after a mid-week hemodialysis session. Body fluids and nutritional status were studied using a Body Composition Monitor (BCM), Fresenius Medical Care. Clinical and laboratory data were also analyzed. Multivariate regression analysis of PWV before HD showed that an OH increase of 1 L relate to a PWV parameter rise before HD of 0.523 m/s. Multivariate regression analysis of PWV after HD showed that a rise of central SBP after HD of 10 mmHg relate to a PWV increase after HD of 0.707 m/s. Our data indicate that hydration status and blood pressure may be major determinants of PWV in HD patients.
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Czyżewski et al. (2017) conducted an observational in Hemodialysis (n=71). Overhydration was evaluated on Pulse wave velocity (PWV) (0.523 m/s rise per 1 L OH increase). An overhydration increase of 1 L was associated with a 0.523 m/s rise in pulse wave velocity before hemodialysis, indicating hydration status is a major determinant of arterial stiffness.
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