Perioperative Fluid Optimization and Gastrointestinal Recovery after Major Abdominal Surgery

Abstract

Introduction: Excessive perioperative fluid administration may contribute to intestinal edema and delayed recovery. This review evaluates the relationship between goal-directed fluid therapy (GDT) and return of gastrointestinal function after major abdominal procedures.

Methods: A systematic literature search was conducted in MEDLINE, EMBASE, and Cochrane Library for randomized controlled trials comparing GDT using dynamic parameters (stroke volume variation, pulse pressure variation) versus standard fluid regimens. Inclusion criteria were adult patients undergoing elective major abdominal surgery and reporting time to first flatus, stool, or feeding tolerance.

Results: Fourteen trials comprising 2,847 patients met inclusion. Pooled analysis showed that GDT significantly reduced time to first flatus by a mean of 0.8 days and time to hospital discharge by 1.4 days compared to liberal or restrictive regimens without hemodynamic targets. No difference in anastomotic leak rate was observed.

Discussion: GDT likely enhances gastrointestinal recovery by avoiding both hypovolemia-induced splanchnic hypoperfusion and hypervolemia-induced bowel wall edema. However, heterogeneity in fluid protocols and monitoring devices limits generalizability. Some studies used invasive arterial waveform analysis while others employed esophageal Doppler, introducing variability.

Conclusions: Perioperative GDT facilitates earlier gastrointestinal recovery and shorter hospitalization after major abdominal surgery. Implementation requires appropriate monitoring and clinician training.