PRO STRESS Trial: Proactive Low-Dose Norepinephrine to Reduce Intraoperative Fluid Administration in Patients at High-Risk for Postoperative Pulmonary Complications Undergoing Laparoscopic Abdominal Surgery
Starting soon · Not applicable · Has a placebo group
Conditions studied: Intraoperative Hypotension, Postoperative Pulmonary Complications (PPCs), Fluid Over-load
In brief
Intraoperative hypotension is commonly treated with fluid administration; however, excessive fluid therapy may contribute to postoperative pulmonary complications. This randomized double-blind controlled trial evaluates whether proactive administration of fixed low-dose norepinephrine reduces intraoperative crystalloid administration while maintaining hemodynamic stability in high-risk patients undergoing laparoscopic abdominal surgery. One hundred and thirty patients will be randomized to receive either norepinephrine infusion (0.03 µg/kg/min) or placebo from induction until skin closure within a protocolized hemodynamic strategy guided by mean arterial pressure and pulse pressure variation.
Key facts
- Study ID
- NCT07627360
- Run by
- Suez Canal University
- People needed
- 130
- Starts
- 2026-07-15
- Expected to finish
- 2026-11-01
- Last updated by the study team
- 2026-07-13
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Adult patients aged 18 years or older.
- American Society of Anesthesiologists (ASA) physical status I-III.
- Scheduled for elective laparoscopic major abdominal surgery under general anesthesia with an expected duration greater than 2 hours.
- Patients with ARISCAT score ≥ 45 indicating high risk for postoperative pulmonary complications.
You may not qualify if…
- Known hypersensitivity to norepinephrine.
- Severe left ventricular dysfunction with ejection fraction < 35%.
- Significant cardiac arrhythmia.
- Uncontrolled hypertension defined as systolic blood pressure ≥ 180 mmHg or diastolic blood pressure ≥ 110 mmHg.
- End-stage renal disease.
- Requirement for vasopressor support before induction of anesthesia.
- Emergency surgery.
Where it is running
- Suez Canal University Hospitals — Ismailia, Ismailia Governorate, Egypt
Full record on ClinicalTrials.gov
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