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Updated: Apr 30, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Aortic to brachial pulse pressure amplification as functional marker and predictor of renal function loss in chronic
Siegfried Wassertheurer1, Klaus Burkhardt, Uwe Heemann
1Health & Environment Department, AIT Austrian Institute of Technology, Vienna, Austria; Department of Analysis and Scientific Computing, Vienna University of Technology, Vienna, Austria.
Insights
Pulse pressure amplification (PPA) is reduced in chronic kidney disease (CKD) patients and predicts worsening renal function. Low PPA indicates a higher risk of renal endpoints in advanced CKD.
Area of Science:
- Cardiovascular physiology
- Nephrology
- Arterial function
Background:
- Pulse pressure amplification (PPA) is an indicator of large artery function.
- The role of PPA in the progression of chronic kidney disease (CKD) is not fully understood.
- CKD affects cardiovascular health, and understanding arterial function is crucial.
Purpose of the Study:
- To assess the association between PPA and CKD progression.
- To determine if PPA predicts renal endpoints in patients with CKD stages 2-4.
- To investigate the relationship between PPA, renal function decline, and renal outcomes.
Main Methods:
- Longitudinal study of 128 CKD patients (stages 2-4) and 89 controls over 42 months.
- Measurement of PPA and estimated glomerular filtration rate (eGFR).
- Cox regression analysis to identify predictors of renal endpoints (50% eGFR loss or renal replacement therapy).
Main Results:
- CKD patients exhibited reduced PPA compared to controls.
- Lower PPA was associated with a faster decline in renal function.
- PPA, eGFR, and proteinuria were significant predictors of renal endpoints.
- Patients with stage 4 CKD and low PPA had the highest risk of renal endpoints.
Conclusions:
- PPA is diminished in CKD patients and correlates with declining renal function.
- Low PPA is a significant predictor of adverse renal outcomes, particularly in advanced CKD.
- Systolic blood pressure is a key determinant of PPA in the context of CKD.
Abstract:
Pulse pressure amplification (PPA) reflects large artery function. Its contribution in chronic kidney disease (CKD) remains uncertain. The authors assessed PPA in CKD progression in patients with CKD stage 2 to 4 (n=128) and 89 controls (follow-up: 42 months). PPA was reduced in CKD patients as compared with control patients and associated with decline in renal function. Sixteen renal endpoints, defined by 50% loss of renal function or start of renal replacement therapy, were detected. In Cox regression analysis, PPA, estimated glomerular filtration rate, and proteinuria predicted renal endpoints. Patients with CKD stage 4 and low PPA had the highest risk for developing renal endpoints (unadjusted 8.1; 2.4-27.7 and adjusted for age and proteinuria 5.6; 1.5-21.9, log-rank P<.001). Taken together, PPA is reduced in CKD and is associated with declining renal function. In addition, low PPA predicts renal endpoints in severe CKD. Furthermore, this study emphasizes the role of systolic blood pressure as a major determinant of PPA.
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