Local Wound Infiltration With 0.5% Levobupivacaine for Postoperative Pain After Laparoscopic Colorectal Surgery.

Colorectal Cancer Clinical Trial

Official title:

A Prospective Randomized Controlled Trial of Postoperative Analgesic Effects of Local Wound Infiltration With 0.5% Levobupivacaine in Laparoscopic Colorectal Surgery.

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03433014
• Other study ID #: 2016/200
• Status: Completed
• Phase: N/A
• Start date: March 31, 2018
• Est. completion date: December 30, 2020

Study information

• Verified date: September 2021
• Source: Mahidol University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The study design is a prospective randomized, double-blind, controlled trial of patients who are due to have elective laparoscopic colorectal surgery in Ramathibodhi Hospital. The primary objective is to measure pain scores (Visual Analog Scale) in the postoperative period. The secondary objective is to compare the VAS scores between the two types of technique used for specimen retrieval incision.After approval by the ethics committee, patients scheduled for elective laparoscopic colorectal surgery under general anesthesia who are eligible for inclusion criteria were recruited for this study after informed consent by surgical residents or surgical staff at the Outpatient Department (OPD). Patients who meet the exclusion criteria will be excluded.

Description:

During a preoperative visit, the patients are introduced to the concept of the visual analogue scale (VAS), which ranges from 0 = no pain to 10 = worst pain.

Once given general anesthesia in the operating room, the patient will be randomly selected into one of the two arms of this report's diagram (1:1 ratio) through the drawing of a sealed, opaque envelope by one of the surgical residents in charge or by the attending surgeon. The infiltration group will receive local infiltration with 0.5% Levobupivacaine. The trocar insertion sites are infiltrated before the skin incision is made. Using the Lap-Assist Transversus Abdominis Plane Block Technique, the total volume of infiltrated 0.5% Levobupivacaine is 20 ml, divided proportionally according to the length of the skin incision (2 ml for the 5-mm trocar and 3 ml for the 10-mm trocars, and 10 mL for specimen retrieval incision). The control group will not receive any local infiltrative agent.After induction, the pneumoperitoneum will be created via the Open Hasson Technique and using a 10-12-mm trocar. During surgery, intraabdominal pressure is maintained at 12-15 mmHg. In addition to the Hasson trocar, one 10-mm and two to three 5-mm trocars will be used. The specimen retrieval incision will be performed in one of two techniques, depending on the surgeon's preference, a 4-6 cm length midline incision (extending from the Hasson trocar incision) or a 4-6 cm length Pfanensteil incision.

A standardized plan for postoperative analgesia is prepared. All patients will receive one 500 mg tablet of oral paracetamol every 6 hours when postoperative oral intake is allowed by the attending doctor. In patients with VAS scores >3, parenteral opioid (Morphine) is given.

The hospital volunteer nurses caring for the patients during the preoperative and postoperative course are given standard pain evaluation protocols. All study pain evaluators and patients are blinded to treatment assignments throughout the pain assessment process.

After the operation, the inpatient ward nurse will record the patients' pain score at 4 hours after surgery using the VAS score and record the results in the study data recording form attached to each patient's medical record chart. Additional morphine usage data is also recorded.

All side effects, such as tinnitus, nausea, vomiting, headache, dizziness, seizure, cardiovascular instability, and local wound complication will be recorded and treated by the attending resident or consultant doctor.

All data is collected by the main investigator from the patient chart and data recording form. Data is expressed as mean ± SD. Parametric data is compared between groups. Statistical significance is set at a level of p< 0.05.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: December 30, 2020
• Est. primary completion date: August 1, 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Patients scheduled for elective laparoscopic colorectal surgery under general anesthesia.

• ASA (American Society of Anesthesiologists) classification 1 and 2

• Laparoscopic colorectal surgery including Laparoscopic segmental colonic resection, laparoscopic anterior resection and laparoscopic low anterior resection

Exclusion Criteria:

• Conversion to open surgery.

• Patients receive epidural anesthesia.

• Patients have history allergy to aminoamides.

Related Conditions & MeSH terms

• Colorectal Cancer
• Colorectal Neoplasms
• Laparoscopic Colorectal Surgery

Intervention

Procedure:
• 0.5% Levobupivacaine
The infiltration group will receive local infiltration with 0.5% Levobupivacaine. The trocar insertion sites are infiltrated before the skin incision is made. Using the Lap-Assist Transversus Abdominis Plane Block Technique, the total volume of infiltrated 0.5% Levobupivacaine is 20 ml, divided proportionally according to the length of the skin incision (2 ml for the 5-mm trocar and 3 ml for the 10-mm trocars, and 10 mL for specimen retrieval incision). The specimen retrieval incision will be performed in one of two techniques, depending on the surgeon's preference, a 4-6 cm length midline incision (extending from the Hasson trocar incision) or a 4-6 cm length Pfanensteil incision.

Other:
• Control
No infiltration

Locations

Country	Name	City	State
Thailand	Chairat Supsamutchai	Bangkok	Bankok

Sponsors (2)

Lead Sponsor	Collaborator
Mahidol University	Ramathibodi Hospital

Country where clinical trial is conducted

Thailand, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	measure pain scores (Visual Analog Scale) in the postoperative period	After the operation, the inpatient ward nurse will record the patients' pain score at 4 hours after surgery using the VAS score and record the results in the study data recording form attached to each patient's medical record chart.standardized plan for postoperative analgesia is prepared. All patients will receive one 500 mg tablet of oral paracetamol every 6 hours when postoperative oral intake is allowed by the attending doctor. In patients with VAS scores >3, parenteral opioid (Morphine) is given.	4 hours after surgery using the VAS score
Secondary	objective is to compare the VAS scores between the two types of technique used for specimen retrieval incision	The secondary objective is to compare the VAS scores between the two types of technique used for specimen retrieval incision.. The specimen retrieval incision will be performed in one of two techniques, depending on the surgeon's preference, a 4-6 cm length midline incision (extending from the Hasson trocar incision) or a 4-6 cm length Pfanensteil incision.	4 hours after surgery using the VAS score