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Impact of an ERAS-Based Surgical Care Bundle Implementation for Preventing Anastomotic Leakage in Minimally Invasive

Koji Tamura¹, Takaaki Fujimoto¹, Jinghui Zhang¹

¹Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.

World Journal of Surgery

|January 24, 2026

Abstract

Background:

Anastomotic leakage (AL) remains a severe complication after low anterior resection (LAR) for rectal cancer, despite advances in minimally invasive (MI) techniques. This study aimed to evaluate the impact of a surgery-focused care bundle, implemented on an enhanced recovery after surgery (ERAS)-based perioperative protocol, on preventing AL and improving postoperative outcomes in patients with MI-LAR.

Methods:

In this retrospective historically controlled cohort study, a total of 306 patients who underwent MI-LAR between 2011 and 2024 were included. A late-phase cohort (n = 81) receiving the care bundle with an ERAS-based protocol (from September 2019) was compared with a historical early-phase cohort (n = 225). The surgery-focused care bundle included robot surgery, preoperative oral antibiotics, indocyanine green blood flow evaluation, diverting stoma, transanal drainage tubes, and anastomotic reinforcement. Our institutional ERAS protocol was developed in accordance with the ERAS Society guidelines. Propensity score matching (PSM) was used to adjust for baseline differences between cohorts.

Results:

The AL rate significantly decreased from 14.7% (33/225) to 2.5% (2/81) after bundle implementation (p < 0.01). Post-PSM, AL rates remained significantly lower in the late-phase cohort (18.0% vs. 1.3% and p < 0.001). Severe complications (Clavien-Dindo grade ≥ 3) and surgical site infections (SSIs) were also significantly reduced, and no reoperations were required in the late-phase cohort. Multivariate analysis identified lack of care bundle (odds ratio [OR]: 6.36, 95% confidence interval [CI]: 1.42-28.4, and p = 0.01) and male sex (OR: 3.05, 95% CI: 1.24-7.52, and p = 0.01) as significant risk factors for AL.

Conclusions:

Implementation of a surgery-focused care bundle, integrated within an ERAS-based perioperative framework, significantly reduced AL, severe complications, and SSIs after MI-LAR, suggesting potential long-term benefits by improving short-term postoperative outcomes.

Keywords:

anastomotic leakage laparoscopic surgery low anterior resection rectal cancer robot‐assisted surgery

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