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CTRI Number  CTRI/2025/03/081975 [Registered on: 07/03/2025] Trial Registered Prospectively
Last Modified On: 18/02/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Other 
Public Title of Study   Efficacy, Safety, and Feasibility of Opioid-Free Anaesthesia in Laparoscopic Surgeries During Peri and Post Operative Period 
Scientific Title of Study   A Prospective Randomized Double-Blinded Study to Evaluate the Efficacy, Safety, and Feasibility of Opioid-Free Anaesthesia in Laparoscopic Surgeries During the Peri and Post Operative Period 
Trial Acronym  EFFICACY ,SAFETY AND FEASABILITY OF OPIOID FREE ANAESTHESIA IN LAPROSCOPIC SURGERIES DURING PERI AND POST OPERATIVE PERIOD  
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Divyalakshmi T  
Designation  PG resident  
Affiliation  Vinayaka Missions Kirupananda Variyar Medical College 
Address  Department of Anaesthesiology at Vinayaka Missions Kirupananda Variyar Medical College and Hospitals

Salem
TAMIL NADU
636308
India 
Phone  7397312345  
Fax  914272477903  
Email  sirayushidivu@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Divyalakshmi T  
Designation  PG resident  
Affiliation  Vinayaka Missions Kirupananda Variyar Medical College 
Address  Department of Anaesthesiology at Vinayaka Missions Kirupananda Variyar Medical College and Hospitals

Salem
TAMIL NADU
636308
India 
Phone  7397312345  
Fax  914272477903  
Email  sirayushidivu@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr R Brindha  
Designation  Professor and HoD  
Affiliation  Vinayaka Mission’s Kirupananda Variyar Medical College, Salem  
Address  Department of Anaesthesiology at Vinayaka Missions Kirupananda Variyar Medical College and Hospitals

Salem
TAMIL NADU
636308
India 
Phone  9443247021  
Fax  914272477903  
Email  mskbrins63@gmail.com  
 
Source of Monetary or Material Support  
VINAYAKA MISSIONS RESEARCH FOUNDATION 
 
Primary Sponsor  
Name  VINAYAKA MISSIONS RESEARCH FOUNDATION 
Address  KIRUPANANDA VARIYAR MEDICAL COLLEGE HOSPITALS Sankari Main Road Ariyanoor Post Salem 636 308 Tamil Nadu India  
Type of Sponsor  Private medical college 
 
Details of Secondary Sponsor  
Name  Address 
Dept of Anaesthesiology  VMK VMC&H, Salem. 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Divyalakshmi T   Vinayaka Mission’s Kirupananda Variyar Medical College  Vinayaka Missions Kirupananda Variyar Medical College and Hospitals (VMKVMC) in Salem, Tamil Nadu.
Salem
TAMIL NADU 
7397312345

sirayushidivu@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
UNIVERSITY ETHICS COMMITTEE VINAYAKA MISSIONS RESEARCH FOUNDATION DU  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K409||Unilateral inguinal hernia, without obstruction or gangrene,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Opioid-Free Anesthesia (OFA) Protocol, which includes: Lidocaine infusion (1.5 mg/kg) Magnesium sulfate (2 g bolus) Erector Spinae Plane Block (ESPB) for regional analgesia Non-opioid analgesics: Pre-emptive analgesia: IV Dexamethasone (8 mg) and IV Paracetamol (15 mg/kg) Postoperative analgesia: IV Paracetamol (1 g) General anesthesia maintenance: Induction: IV Propofol and Vecuronium Maintenance: Sevoflurane, Nitrous oxide, and Oxygen Monitoring: Haemodynamic parameters, BIS (Bispectral Index) scores  Opioid-based anesthesia using Fentanyl or Morphine for intraoperative and postoperative analgesia. A traditional analgesic regimen including opioid administration for pain control. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Participants eligible for inclusion in the study must meet the following criteria:
Age Range: 18 to 60 years
ASA Classification: American Society of Anesthesiologists (ASA) Grade I and II
Elective Laparoscopic Surgery: Patients scheduled for laparoscopic cholecystectomy, appendectomy, or hernia repair
Ability to Provide Informed Consent: Patients who understand and voluntarily agree to participate in the study
Hemodynamically Stable Patients: No pre-existing severe cardiovascular instability 
 
ExclusionCriteria 
Details   
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Case Record Numbers 
Blinding/Masking   Double Blind Double Dummy 
Primary Outcome  
Outcome  TimePoints 
To study the feasibility and efficacy of opioid-free anesthesia during the intraoperative period by monitoring vitals and BIS (Bispectral Index) scores.
This means the study primarily focuses on assessing how well opioid-free anesthesia maintains hemodynamic stability (heart rate, blood pressure, oxygen saturation, etc.) and the depth of anesthesia (via BIS monitoring) during surgery. 
1. Intraoperative Time Points (During Surgery)
Baseline (Before Induction)
At specific intervals after induction:
0 min
1 min
5 min
10 min
15 min
30 min
45 min
60 min
75 min
90 min
105 min
120 min
135 min
150 min
2. Postoperative Time Points (After Surgery)
Immediately after extubation
Follow-up monitoring at:
0 hours (immediate post-op)
15 minutes
30 minutes
1 hour
2 hours
4 hours
8 hours
12 hours
24 hours
 
 
Secondary Outcome  
Outcome  TimePoints 
The secondary outcome measures include postoperative pain assessment, time to first analgesic request, total postoperative analgesic consumption, incidence of postoperative adverse effects, and postoperative recovery parameters. Pain will be assessed using the Visual Analog Scale (VAS) at multiple time points. The total dose of rescue analgesia required within the first 24 hours will be recorded. Adverse effects such as nausea, vomiting, sedation, and respiratory depression will be monitored. Recovery parameters, including time to ambulation and time to discharge from PACU, will also be evaluated  Postoperative pain (VAS score) will be measured at 0, 15, and 30 minutes, and at 1, 2, 4, 6, 8, 12, and 24 hours. 
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   Phase 4 
Date of First Enrollment (India)   07/04/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
Recruitment Status of Trial (India)  Not Yet Recruiting 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary   This prospective, randomized, double-blinded study aims to evaluate the efficacy, safety, and feasibility of Opioid-Free Anaesthesia (OFA) in laparoscopic surgeries. The study will compare OFA, which includes Lidocaine, Magnesium, and Erector Spinae Plane Block (ESPB), with Standard Opioid-Based Anaesthesia (SOBA) using conventional opioids. The primary outcome measures include hemodynamic stability, BIS scores, and intraoperative analgesic requirements. Secondary outcomes focus on postoperative pain (VAS scores), time to first analgesic request, total postoperative analgesic consumption, incidence of adverse effects, and recovery parameters. A total of 100 adult patients will be recruited and followed for 24 hours postoperatively. The study aims to determine whether OFA can provide effective perioperative pain management while reducing opioid-related side effects. 
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