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

Study Overview
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Brief Summary
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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.

Detailed Description
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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%.

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

Conditions
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Anastomosis

Intervention / Treatment
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* Procedure: ES anastomosis
* Procedure: SS anastomosis


Participation Criteria
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Eligibility Criteria
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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

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

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


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: ES anastomosis<br>Stapled end-to-side anastomosis | Procedure: ES anastomosis<br>* 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.<br>|
| Active Comparator: SS anastomosis<br>Stapled side-to-side anastomosis | Procedure: SS anastomosis<br>* The side wall of the transverse colon will be anastomosed to the side wall of the distal ileum with two linear staplers.<br>|

What is the study measuring?
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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 rate of adherence to the ERAS protocol | at discharge from hospital, an average of 1 week | 
| Readmission rate within 1 month after surgery | Readmissions after discharge | at 30 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Ileocolic, stapled, laparoscopy, right hemicolectomy