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Kidney Week

Abstract: FR-PO581

Difference between Central and Peripheral Blood Pressure during Hemodialysis

Session Information

Category: Hypertension

  • 1104 Hypertension: Clinical and Translational - Salt and Hypertension

Authors

  • Al-Said, Jafar, Bahrain Specialist Hospital, Manama, Bahrain
  • Suyao, Corazon, Bahrain Specialist Hospital, Manama, Bahrain
Background

Difference between the peripheral and central pressure had been confirmed in multiple studies. During hemodialysis, the blood pressure is measured regularly. Whether the difference between the peripheral and central pressure measurements is significant enough to favor checking the central rather than the peripheral pressure during the session is not known?

Methods

During regular hemodialysis treatments for 10 of our ESRD patients, we measured the central and the peripheral BP through one full session. The average systolic and diastolic pressures were estimated. The pulse pressure was calculated for the peripheral as well as the central pressure. The paired T test was used to determine the statistical significance.

Results

Among the 10 patients 70% were females. Mean age was 57.7 years (SE3.8). All of them were having hypertension and 80% were diabetic. The mean peripheral systolic pressure was 149mmHg. (SE 6.9). The mean central systolic pressure was 129mmHg (SE 5.8). The mean peripheral diastolic pressure was 77mmHg. (SE 4.8). The mean central diastolic pressure was 80mmHg (SE 4.6). The mean peripheral pulse pressure was 72mmHg (SE 6). The mean central pulse pressure was 49mmHg (SE 4.6). The difference between peripheral and central measurements for the systolic, diastolic and pulse pressure were statistically significant. The systolic pressure was 20mmHg higher in the peripheral measurement with P 0.012. The diastolic pressure was 3 mmHg lower in the peripheral measurement P 0.009. The pulse pressure was 22 mmHg higher in the peripheral measurement P 0.006.

Conclusion

There was a significant difference between the peripheral and central pressure measurements during dialysis. It suggests that monitoring of the central pressure would be more accurate than the peripheral pressure during the hemodialysis sessions. The difference was noticed more among patients with high CV risks.