ASN's Mission

To create a world without kidney diseases, the ASN Alliance for Kidney Health elevates care by educating and informing, driving breakthroughs and innovation, and advocating for policies that create transformative changes in kidney medicine throughout the world.

learn more

Contact ASN

1401 H St, NW, Ste 900, Washington, DC 20005

email@asn-online.org

202-640-4660

The Latest on X

Kidney Week

Abstract: TH-OR114

The HOME-BP Trial: Treating Home vs. Predialysis Blood Pressure in Patients on Hemodialysis

Session Information

Category: Dialysis

  • 801 Dialysis: Hemodialysis and Frequent Dialysis

Authors

  • Bansal, Nisha, University of Washington, Seattle, Washington, United States
  • Heagerty, Patrick James, University of Washington, Seattle, Washington, United States
  • Comstock, Bryan A., University of Washington, Seattle, Washington, United States
  • Schmicker, Robert, University of Washington, Seattle, Washington, United States
  • Rivara, Matthew B., University of Washington, Seattle, Washington, United States
  • Cohen, Jordana B., University of Pennsylvania, Philadelphia, Pennsylvania, United States
  • Sarathy, Harini, University of California San Francisco, San Francisco, California, United States
  • Mehrotra, Rajnish, University of Washington, Seattle, Washington, United States
  • Hsu, Chi-yuan, University of California San Francisco, San Francisco, California, United States
Background

Treatment targets for hypertension in hemodialysis patients are unknown. Observational data show a U-shaped association between pre-dialysis systolic blood pressure (SBP) and adverse outcomes; but a stepwise linear relationship between higher out of dialysis unit SBP (e.g. home BP) and higher risk of these outcomes. The HOME-BP trial (NCT05159999) was the first multi-center trial to determine the efficacy of treating home SBP <140mmHg vs. pre-dialysis SBP<140 mmHg.

Methods

This was a 10-month, pragmatic cross-over RCT of 200 hemodialysis participants testing a strategy to treat home SBP <140 mmHg vs. pre-dialysis SBP<140 mmHg. Participants were randomized to either treatment of home vs. pre-dialysis SBP for the initial 5-month period and then crossed-over to the alternative treatment strategy for the 2nd 5-month period (with blinding to SBP readings not being targeted). Participants measured their home BP twice a week (three measurements per sitting) on a non-dialysis day for the entire trial. Pre-dialysis BPs were obtained as part of clinical care. Target SBP for both treatment strategies was achieved using volume management and anti-hypertensive medications. The primary outcome was rate of intradialytic hypotension (IDH), defined as the percent of dialysis sessions with at least one intradialytic SBP<90mmHg.

Results

The median age of the study population was 58 (IQR 47-65) years and 73% were male. At baseline, mean (SD) home SBP was 143.6 (20.6) and mean pre-dialysis SBP was 147.6 (16.6) (r = 0.68). Pre-dialysis SBP was higher than home BP in on average (median 4.0 [(IQR -5.0, 15.5]mmHg) but home BP was higher 37% of the time. Trends of SBP are shown in Figure 1. Rates of IDH did not differ by targeting home (6.6%) vs. pre-dialysis SBP (6.3%) (aRR [95% CI] = 0.99 [0.82 – 1.20]). Rates of serious adverse events were similar with both treatment strategies.

Conclusion

In this pragmatic cross-over RCT, targeting home SBP < 140 mmHg did not reduce rates of IDH compared with targeting pre-dialysis SBP <140 mmHg.

Funding

  • NIDDK Support