Abstract: SA-PO1039
Monitoring the Subendocardial Viability Ratio During Hemodialysis and the Correlation with Central and Peripheral Blood Pressure Components
Session Information
- Hemodialysis: Risk Factors, Epidemiology, and Outcomes
October 24, 2026 | Location: Exhibit Hall A, Convention Center
Abstract Time: 10:00 AM - 12:00 PM
Category: Dialysis
- 801 Dialysis: Hemodialysis and Frequent Dialysis
Authors
- Morrow, Alexandra, Ochsner Medical Center, New Orleans, Louisiana, United States
- Olsen, Sarah A., Ochsner Medical Center, New Orleans, Louisiana, United States
- Alsaid, Jafar, Ochsner Medical Center, New Orleans, Louisiana, United States
Background
Subendocardial Viability Ratio (SEVR) measurement is linked with coronary oxygen supply. In this study, we evaluated the correlation between SEVR and central and peripheral blood pressure (BP) components during hemodialysis (HD).
Methods
Prospective observation single center cohort study started in 2024. Included HD ESRD inpatients admitted for reasons other than access failure, CHF, Acute coronary syndrome, CVA, shock, or HTN crises. Central and peripheral BP were measured every 15 minutes with SphygmoCor AtCore system during HD. SEVR was calculated using pulse wave analysis. Pearson correlation and multivariate regression were used to assess the relationship between SEVR and systolic, diastolic, MAP and pulse pressure (PP) for both central and peripheral BP measurements.
Results
Thirty-two patients consented, through 85 dialysis sessions a total of 1,351 peripheral BP readings and 846 central BP readings were recorded. Mean age 54.8+15 years, 60% males, and mean BMI was 29 kg/sqm + 6.7. Comorbidities included HTN (100%), DM (73%), CAD (38%) and CHF (57%).
Mean SEVR was 123.9% +35.9, woth a range 41–311%. Mean peripheral BP values were: systolic 140+23.2 mmHg, diastolic 75 + 12.9 mmHg, MAP 97+14.8 mmHg, and PP 65+17.8 mmHg. Mean central BP values were: systolic 126 mmHg+ 21.7, diastolic 79 + SD 14.3 mmHg, MAP 96 + 16.6 mmHg, and PP 47 + 14.3 mmHg.
SEVR was significantly correlated with peripheral systolic BP (r = –0.28, P<0.002), PP (r = –0.40, P< 0.001), and MAP (r = –0.12, P<0.001), as well as central systolic BP (r = –0.24, P<0.001), PP (r = –0.35, P<0.001), and MAP (r = –0.13, P< 0.001). But not with peripheral or central diastolic BP.
BMI, diabetes, CHF, pulse rate, ultrafiltration rate, and BP component were n independently associated in multivariate regression with SEVR were (R square = 0.9). Central systolic BP had the highest Beta coefficient –0.54, P<0.001. Peripheral systolic, and diastolic, and central diastolic BP were not significantly associated.
Conclusion
Noninvasive measurements for SEVR were significantly associated with central and peripheral systolic blood pressure, MAP and PP but not diastolic blood pressure. Central systolic pressure demonstrated the strongest independent association. Further investigation using central BP monitoring during HD is warranted to determine its impact on major cardiovascular outcomes.
Acknowledgment
Hemodialysis unit nursing team at Ochsner Medical Center.