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CTRI Number  CTRI/2025/04/085212 [Registered on: 21/04/2025] Trial Registered Prospectively
Last Modified On: 13/04/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparing Two Types of Anaesthesia (with and without Opioids) for patients undergoing keyhole Abdominal Surgeries.  
Scientific Title of Study   Opioid-free (OFA) versus Opioid-based(OBA) Anaesthesia in Laparoscopic Abdominal Surgeries:A Prospective Randomized Controlled Trial  
Trial Acronym  OFA and OBA  
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Lalit Kumar 
Designation  PG student  
Affiliation  Army Hospital Research and Referral 
Address  Department of Anaesthesiology and Critical Care, Army Hospital Research and Referral,Delhi Cantt,New Delhi

New Delhi
DELHI
110010
India 
Phone  8787021323  
Fax    
Email  dr.lalit.94@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Bhavna Hooda 
Designation  Professor  
Affiliation  Army Hospital Research and Referral 
Address  Department of Anaesthesiology and Critical Care, Army Hospital Research and Referral,Delhi Cantt,New Delhi

New Delhi
DELHI
110010
India 
Phone  9910663810  
Fax    
Email  drbhavnahooda@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Bhavna Hooda 
Designation  Professor  
Affiliation  Army Hospital Research and Referral 
Address  Department of Anaesthesiology and Critical Care, Army Hospital Research and Referral,Delhi Cantt,New Delhi

New Delhi
DELHI
110010
India 
Phone  9910663810  
Fax    
Email  drbhavnahooda@gmail.com  
 
Source of Monetary or Material Support  
Army Hospital Research and Referral, New Delhi 
 
Primary Sponsor  
Name  Bhavna Hooda 
Address  Department of Anaesthesiology and Critical Care, Army Hospital Research and Referral,Delhi Cantt,New Delhi 
Type of Sponsor  Other [self] 
 
Details of Secondary Sponsor  
Name  Address 
Gaurav Purohit  Department of Anaesthesiology and Critical Care, Army Hospital Research and Referral,Delhi Cantt,New Delhi 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Bhavna Hooda  Army Hospital Research and Referral  Department of Anaesthesiology and Critical Care, Army Hospital Research and Referral,Delhi Cantt,New Delhi
New Delhi
DELHI 
9910663810

drbhavnahooda@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K800||Calculus of gallbladder with acutecholecystitis,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Opioid Based Anaesthesia(OBA)  Control Group (Standard Opioid-Based Anaesthesia): Induction done with- Fentanyl: 1–2 µg/kg Propofol: 1.5–2.5 mg/kg Atracurium 0.5mg/kg Maintenance: Anaesthesia will be maintained by Sevoflurane in Air and oxygen mixture to maintain anaesthesia depth and boluses of Atracurium for muscle relaxation. Additional fentanyl boluses as required. (increase in HR or MAP more than 10% of baseline).  
Intervention  Opioid Free Anaesthesia(OFA)  Induction done with- Dexmedetomidine: Loading dose of 0.6 µg/kg over 10 minutes, followed by a maintenance infusion of 0.5 µg/kg/h. Ketamine: Bolus of 0.5 mg/kg at induction. Propofol: 1.5-2.5 mg/kg Atracurium 0.5mg/kg Maintenance: Additional ketamine boluses of 0.25 mg/kg will be administered as needed. (on the basis of increase in HR or MAP more than 10% of baseline) Anaesthesia will be maintained by Sevoflurane in Air and oxygen mixture to maintain anaesthesia depth.  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  1. Adult aged 18 years and older undergoing laparoscopic abdominal surgeries. 2. ASA classification I-II .3. Patients capable of providing informed consent or with consent provided by legal guardian 
 
ExclusionCriteria 
Details  1.Patients with contraindications or allergies to study medications.
2.Patients with chronic opioid use or opioid dependence.
3. Pregnant or lactating women.
4.Patients refusal. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare postoperative pain scores in both groups by using Numeric Rating Scale(NRS).  At immediate postop, 06 hours,12 hours,24 hours postoperatively. 
 
Secondary Outcome  
Outcome  TimePoints 
To determine analgesic requirement within first 24 hours.
Time to first analgesic request
Incidence of postoperative nausea and vomiting
Sedation scores(RASS Scale) and patient satisfaction. 
At 06 hours , 12hours , 24 hours postoperatively. 
 
Target Sample Size   Total Sample Size="80"
Sample Size from India="80" 
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 2 
Date of First Enrollment (India)   24/04/2025 
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="0"
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 - YES
  1. What data in particular will be shared?
    Response - All of the individual participant data collected during the trial, after de-identification.

  2. What additional supporting information will be shared?
    Response -  Study Protocol
    Response - Informed Consent Form

  3. Who will be able to view these files?
    Response - Anyone

  4. For what types of analyses will this data be available?
    Response - Any purpose.

  5. By what mechanism will data be made available?
    Response (Others) - 

  6. For how long will this data be available start date provided 21-04-2025 and end date provided 10-04-2028?
    Response - Immediately following publication. No end date.

  7. Any URL or additional information regarding plan/policy for sharing IPD? 
    Additional Information - NIL
Brief Summary   Anaesthesia is built upon four pillars that ensure a safe and effective perioperative experience. The four pillars being hypnosis, autonomic stability ,muscle relaxation and analgesia. Opioids have long been the primary choice for managing perioperative pain due to their strong analgesic effects. However, their use is fraught with significant adverse effects such as respiratory depression ,post-operative nausea ,vomiting, ileus and the risk of dependence or addiction. Apart from this ,the opioid epidemic is a global public health crisis characterized by the widespread misuse of opioid medications ,leading to addiction ,overdose and death. The over-reliance on opioids for pain management , particularly in perioperative care ,has contributed to this crisis, necessitating alternative approaches.
Opioid free anaesthesia (OFA) aims to achieve analgesia without the use of opioids ,instead utilizing a multimodal analgesic regimen with non opioid analgesics, regional anaesthesia techniques,and adjunctive pharmacologic agents .Moreover, OFA has been increasingly integrated into Enhanced recovery after surgery (ERAS) protocols, promoting faster recovery, reduced opioid related complications and improved postoperative outcomes.
Given the ongoing opioid epidemic and the rising awareness of opioid related morbidity and mortality, there is an urgent need to re evaluate perioperative opioid use and explore opioid sparing straregies that maintain effective analgesia while enhancing recovery. This prospective, randomized controlled trial aims to compare the efficacy of OFA versus traditional opioid based anaesthesia(OBA) in patients undergoing laparoscopic abdominal surgeries.
 
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