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Study identifier: NCT04884802 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

The GUARDIAN Trial

Condition: Blood Pressure  ·  Sponsor: The University of Texas Health Science Center, Houston

PhaseNA
Planned participants6254
Who can joinAll sexes, 45 Years to no upper limit
Healthy volunteersNo

About this study

An international randomized trial to test the primary hypothesis that perioperative tight blood pressure management reduces a composite of major perfusion-related complications (myocardial injury, stroke, non-fatal cardiac arrest, Stage 2-3 acute kidney injury, deep or organ-space infection, sepsis, and death) in the 30 days after major non-cardiac surgery. The treatments will be: 1) norepinephrine or phenylephrine infusion to maintain intraoperative MAP ≥85 mmHg (tight pressure management); or, 2) routine intraoperative blood pressure management (routine pressure management).

This description comes directly from the study's public registry record.

Talk to the study team

Valerie L. Anderson, BS  ·  (713) 500-4383  ·  Valerie.L.Anderson@uth.tmc.edu

Daniel Sessler, MD  ·  (713) 500-3062  ·  Daniel.Sessler@uth.tmc.edu

Always discuss trial participation with your own doctor first.

Locations (20)

University of Nebraska Medical CenterOmaha, Nebraska, United StatesCompleted
Wake Forest UniversityWake Forest, North Carolina, United StatesCompleted
MetroHealth Medical CenterCleveland, Ohio, United StatesRecruiting
Cleveland Clinic Fairview HospitalCleveland, Ohio, United StatesCompleted
Cleveland Clinic Main CampusCleveland, Ohio, United StatesCompleted
The University of Texas Health Science Center at HoustonHouston, Texas, United StatesRecruiting
Beijing Shijitan Hospital, Capital Medical UniversityBeijing, ChinaRecruiting
Peking Union Medical College HospitalBeijing, ChinaRecruiting
Peking University First HospitalBeijing, ChinaRecruiting
West China University HospitalChengdu, ChinaRecruiting
Prince of Wales Hospital, Chinese University of Hong Kong, ShatinHong Kong, ChinaRecruiting
Renji Hospital, Shanghai Jiaotong University School of MedicineShanghai, ChinaRecruiting

+ 8 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT04884802