Comparison Between End-to-side and Side-to-side Anastomosis After Laparoscopic Right Hemicolectomy

A Comparison of Surgical Outcomes Between End-to-side and Side-to-side Anastomosis After Laparoscopic Right Hemicolectomy: A Prospective Randomized Controlled Trial

The purpose of this study is to evaluate the efficacy of end-to-side anastomosis after laparoscopic right hemicolectomy compared with that of side-to-side anastomosis. The investigators hypothesize that the end-to-side anastomosis may be associated with superior recovery compared with side-to-side anastomosis after laparoscopic right hemicolectomy under enhanced recovery program. The primary endpoint is the cumulative recovery rate, consisting of the recovery time of diet, pain, ambulation, and afebrile status.

Study Overview

• Status: Completed
• Conditions: Anastomosis
• Intervention / Treatment: Procedure: ES anastomosis; Procedure: SS anastomosis

Detailed Description

All patients will be received a laparoscopic right hemicolectomy by three experienced colorectal surgeons and randomly divided into two groups according to the method of anastomosis: - the end-to-side anastomosis group and the side-to-side anastomosis group. After the surgery, enhanced recovery program will be implemented. The primary endpoint is the cumulative recovery rate according to the method of anastomosis. The cumulative recovery rate is defined as the percentage of patients who are satisfied with all aspects of recovery time, including i) tolerance of diet for 24 hours, 2) analgesic-free (oral or intravenous (IV) analgesic drugs not necessary after cessation of patient-controlled analgesia (PCA)), 3) safe ambulation (ambulation of 600m without assistance), 4) afebrile status without major complications (fever was defined as body temperature greater than 37.2°C at axilla). Secondary endpoints are postoperative hospital stay, complications, the failure rate of the enhanced recovery program, and the readmission rate within 1 month after surgery. The expected cumulative recovery rate in postoperative day 7 is 90% in the end-to-side anastomosis group and 70% in the side-to-side anastomosis group. The sample size of 130 patients was calculated as follow: Based on the assumption that cumulative recovery rate will increase to 20% using the end-to-side anastomosis, it was calculated that 65 patients should be in each group. The sample size was calculated by the formula for a power 80%, alpha error of 0.05 and dropout rate of 10%.

• Study Type: Interventional
• Enrollment (Actual): 130
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Korea, Republic of
  • Seongnam, Korea, Republic of, 463-707
    • Seoul National University Bundang Hospital
  • Gyeonggido
    • Seongnam, Gyeonggido, Korea, Republic of, 463-707
      • Seoul National Univercity Bundang Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 76 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria: Patients who have all of the following:

• Age: 18 - 80
• Right-sided colon cancer (adenocarcinoma, located in cecum to hepatic flexure)
• Appropriate laboratory (Bone marrow) findings (Hemoglobin ≥ 10g/dl, White blood cell count ≥ 4,000/mm3, Platelet ≥ 100,000/mm3)
• Appropriate renal function (Creatinine ≤ 1.5 mg/dl)
• Appropriate cardio-pulmonary functions
• Appropriate understanding of the study and provide the informed consent

Exclusion Criteria: Patients who have 1 or more of the following:

• Distant metastasis or locally advanced tumor which required combined resection of other organs, such as the ureter, duodenum, or small bowel.
• Not suitable for laparoscopic surgery
• Currently taking medication for dyschezia, such as constipation or diarrhea.
• Not suitable for adapting enhanced recovery program due to underlying diseases, such as cardio-pulmonary disease, mental disorder, and etc.
• Not suitable for participation in this clinical trial based on the judgment of the investigators

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: ES anastomosis; Stapled end-to-side anastomosis	Procedure: ES anastomosis; The side wall of the transverse colon will be anastomosed to the end of the distal ileum with one circular stapler, and the blind end of the transverse colon will be closed with one linear stapler.
Active Comparator: SS anastomosis; Stapled side-to-side anastomosis	Procedure: SS anastomosis; The side wall of the transverse colon will be anastomosed to the side wall of the distal ileum with two linear staplers.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Cumulative Recovery Rate	The cumulative recovery rate is defined as the percentage of patients who are satisfied with all aspects of recovery time. Recovery time includes the following: Tolerance of diet for 24hours; Analgesic-free status (oral or intravenous (IV) analgesic drugs not necessary after cessation of patient-controlled analgesia (PCA)),; Safe ambulation (ambulation of 600m without assistance),; Afebrile status without major complications (fever was defined as body temperature greater than 37.2°C at axilla).	at 7 days after operation

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Postoperative Hospital Stay	Time(days) from operation to discharge	at discharge from hospital, an average of 1 week
Postoperative Complications	Includes any minor complication (ileus, wound infection) to major complications requiring re-intervention	at 30 days
Failure Rate of the Enhanced Recovery Program	the number of patients who failed to adhere to the ERAS protocol	at discharge from hospital, an average of 1 week
Readmission Rate Within 1 Month After Surgery	the number of patients who were re-admitted after discharge within 1 month after surgery	at 30 days

Collaborators and Investigators

• Sponsor: Seoul National University Hospital
• Investigators: Principal Investigator: Sung-Bum Kang, M.D, Ph.D., Seoul National University College of Medicine Seoul National University Bundang Hospital

Study record dates

Study Major Dates

• Study Start (Actual): September 1, 2016
• Primary Completion (Actual): August 1, 2019
• Study Completion (Actual): July 1, 2020

Study Registration Dates

• First Submitted: September 2, 2016
• First Submitted That Met QC Criteria: September 7, 2016
• First Posted (Estimated): September 13, 2016

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: February 11, 2025
• Last Verified: February 1, 2025

More Information

Terms related to this study

• Keywords: Ileocolic, stapled, laparoscopy, right hemicolectomy
• Other Study ID Numbers: B-1607-354-004

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO