Perioperative medicine & outcomes

The Use of Prophylactic Insulin in Surgical Patients Without Diabetes: A Pilot Randomized, Controlled Trial

Ann SurgPublished Randomised controlled trial

Authors' conclusion

Prophylactic insulin improves glycemic outcomes and may improve clinical outcomes, possibly in part through anti-inflammatory mechanisms.

Study context

Population
Nondiabetic patients undergoing major abdominopelvic surgeryof 248 eligible
Participants
103 patients
Comparison
Prophylactic glucose-insulin-potassium vs placebo
  • GIKn = 50
  • Placebon = 53reference
Primary endpoint
Feasibility (willingness to randomise, treatment completion)
Methodological detailspilot, placebo-controlled
  • Pilot
  • Placebo-controlled

Primary result

As reported in the abstract

Feasibility

Eligible patients randomised

103 of 248

Treatment completed

97%

Further findings

Perioperative euglycaemia (<125 mg/dL)

P < 0.01

Hyperglycaemia (BG >140 mg/dL)

P < 0.05

OutcomeGIKPlaceboEstimate
Use of treatment insulin26%45%Absolute Risk Reduction (aRR) 0.6 (95% CI 0.4–0.9)
ComplicationsWide CIs12%21%aRR 0.5 (95% CI 0.2–1.5)
OutcomeDelta (95% CI)
Rise in neutrophil:lymphocyte ratio, preoperative to POD 1 · postoperative day 1Lower in GIK0.5 (−6.23 to 3.32)

Safety

No episodes of severe hypoglycaemia

Original publication

The Use of Prophylactic Insulin in Surgical Patients Without Diabetes: A Pilot Randomized, Controlled Trial. Ann Surg. Published 18 June 2026. doi:10.1097/sla.0000000000007119

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