Haemodynamics, fluids & transfusion

HIgh versus STAndard blood Pressure target in hypertensive high-risk patients undergoing elective major abdominal surgery: the HISTAP multicenter randomized clinical trial

Intensive Care MedPublished Randomised controlled trial

Primary resultResult — go to the resultRelative risk 0.78 95% CI 0.65–0.93

Authors' conclusion

Among hypertensive patients receiving continuous hemodynamic monitoring and protocolized fluid therapy at increased postoperative risk undergoing major abdominal surgery, targeting an intraoperative MAP ≥ 80 mmHg, compared with ≥ 65 mmHg, reduced major organ dysfunction, primarily due to fewer mild-to-moderate acute kidney injuries.

Study context

Population
Patients aged ≥ 60 years with chronic hypertension requiring home therapy, undergoing elective major abdominal surgery with at least one additional high-risk criterion; 18 Italian centres, March 2023–April 2025630 analysed (ITT)
Participants
636 patients
Comparison
Intraoperative mean arterial pressure (MAP) target ≥ 80 vs ≥ 65 mmHg
Primary endpoint
Composite of:
  • Postoperative mortality
  • At least one major organ dysfunction
Methodological detailsmulticentre
  • Multicentre

Primary result

As reported in the abstract

Relative risk

0.78

95% CI 0.65–0.93

P = 0.006

By group

Treatment vs Control
RR 0.78 (95% CI 0.65–0.93); P = 0.006

Further findings

Mean intraoperative MAP

AKI · significantly less frequent in the Treatment group

P = 0.005

Original publication

HIgh versus STAndard blood Pressure target in hypertensive high-risk patients undergoing elective major abdominal surgery: the HISTAP multicenter randomized clinical trial. Intensive Care Med. Published 29 June 2026. doi:10.1007/s00134-026-08501-7

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