European Journal of Cardiovascular Medicine

Intraoperative fluid management is a critical component of perioperative care in gastrointestinal (GI) surgery. The balance between under-resuscitation and over-resuscitation can significantly influence postoperative outcomes. Inadequate fluid administration may lead to hypovolemia, impaired organ perfusion, and delayed recovery of gastrointestinal function, while excessive fluid can result in tissue edema, increased intra-abdominal pressure, and compromised wound healing [1,2].

Recent studies have highlighted the importance of goal-directed fluid therapy (GDFT) in optimizing intraoperative fluid management. GDFT aims to maintain adequate tissue perfusion and oxygen delivery by tailoring fluid administration to individual patient needs, often guided by dynamic monitoring techniques such as stroke volume variation or pulse pressure variation [3,4]. Evidence suggests that GDFT can reduce postoperative complications, including anastomotic leaks, infections, and acute kidney injury, thereby enhancing recovery and shortening hospital stays [5,6].

This review examines the role of intraoperative fluid management in reducing postoperative complications in gastrointestinal surgery, focusing on the efficacy of restrictive versus liberal fluid strategies and the application of GDFT protocols [7,8,9,10].

Study Design and Setting: This was a prospective observational study conducted at Konaseema institute of medical science Amalapuram, AP, India, over a period of 1 years from July 2023 to July 2024. The study protocol was approved by the Institutional Ethics Committee, and informed written consent was obtained from all participants. Patient Selection: Adult patients (≥18 years) undergoing elective gastrointestinal surgery, including colorectal resections, gastrectomies, and small bowel resections, were included. Exclusion criteria were emergency surgery, pre-existing renal failure, severe cardiac dysfunction (ejection fraction <30%), liver failure, or refusal to participate. Sample Size: The sample size was calculated based on previous studies showing a 20% difference in postoperative complications between goal-directed and standard fluid therapy groups.Assuming α = 0.05 and power of 80%, a minimum of 80 patients per group was required. Grouping and Fluid Management Protocol: Patients were divided into two groups based on intraoperative fluid management strategy: Standard/Liberal Fluid Group (LF): Received fluid based on conventional parameters (body weight, estimated blood loss, and maintenance requirements). Goal-Directed Fluid Therapy Group (GDFT): Received individualized fluid administration guided by dynamic hemodynamic monitoring (stroke volume variation, cardiac output, or pulse pressure variation) using esophageal Doppler or arterial waveform analysis . Anesthetic and Surgical Procedure: All patients received standardized general anesthesia and perioperative care according to institutional protocols. Surgical technique was determined by the attending surgeon, with the approach (open or laparoscopic) recorded. Data Collection: Demographic data, comorbidities, ASA physical status, type and duration of surgery, and intraoperative fluid volume were recorded. Postoperative outcomes included: Length of hospital stay Incidence of postoperative complications: surgical site infection, anastomotic leak, postoperative ileus, pulmonary complications, and acute kidney injury (AKI) Time to first flatus and bowel movement Statistical Analysis: Data were analyzed using SPSS version 26. Continuous variables were expressed as mean ± standard deviation or median (interquartile range) and compared using Student’s t-test or Mann–Whitney U test. Categorical variables were expressed as percentages and compared using Chi-square or Fisher’s exact test. A p-value <0.05 was considered statistically significant.