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CTRI Number  CTRI/2025/08/092608 [Registered on: 07/08/2025] Trial Registered Prospectively
Last Modified On: 14/07/2025
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 different pain reducing regimens/drugs to reduce pain in patients undergoing abdominal surgery 
Scientific Title of Study   Intraoperative Dexmedetomidine Versus Ketamine-Dexmedetomidine Infusion For Postoperative Analgesia In Major Abdominal Surgery: A Randomized Controlled Trial 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Shreem Rawal 
Designation  Senior Resident  
Affiliation  Institute of Liver and Biliary Sciences 
Address  Dept. of Anaesthesiology, Institute of Liver and Biliary Sciences
D1 Vasant Kunj, Ghitorni
New Delhi
DELHI
110070
India 
Phone  8827058005  
Fax    
Email  shreem.rawal@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Udit Dhingra 
Designation  Associate Professor  
Affiliation  Institute of Liver and Biliary Sciences 
Address  Dept. of Anaesthesiology, 3rd floor phase 2 Institute of Liver and Biliary Sciences
D1 Vasant Kunj, Ghitorni
New Delhi
DELHI
110070
India 
Phone  8861987684  
Fax    
Email  uddh1989@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Udit Dhingra  
Designation  Associate Professor  
Affiliation  Institute of Liver and Biliary Sciences 
Address  Dept. of Anaesthesiology, 3rd floor phase 2 Institute of Liver and Biliary Sciences
D1 Vasant Kunj, Ghitorni
New Delhi
DELHI
110070
India 
Phone  8861987684  
Fax    
Email  uddh1989@gmail.com   
 
Source of Monetary or Material Support  
Institute of Liver and Biliary Sciences D1 Vasant Kunj , Ghitorni, New Delhi , India 110070 
 
Primary Sponsor  
Name  ILBS 
Address  D1 Vasant Kunj, New Delhi 110070 
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
NIL  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Shreem Rawal  Institute of Liver and Biliary Sciences  Dept. of Anaesthesiology, 3rd floor phase 2 Institute of Liver and Biliary Sciences D1 Vasant Kunj new Delhi 110070
South
DELHI 
8827058005

shreem.rawal@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: K00-K95||Diseases of the digestive system,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Drug:Dexmedetomidine   Route: Intravenous Dose: 0.5mcg/kg/hr 
Intervention  Drug:Dexmedetomidine with Ketamine  Route: Intravenous Dose: 0.3mcg/kg/hr and 0.3mg/kg/hr respectively 
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  ASA class 1 & 2 
 
ExclusionCriteria 
Details  Patient refusal
Contraindication to study drugs
History of drug abuse
Insufficient comprehension to use of PCA
ASA class 3 & 4
 
 
Method of Generating Random Sequence   Permuted block randomization, fixed 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare the postoperative fentanyl consumption for the first 24 hours using IV PCA in following two groups of patients undergoing major abdominal surgery
Group A – Intraoperative IV dexmedetomidine infusion
Group B – Intraoperative IV ketodex infusion
 
Post Operative 24hr
 
 
Secondary Outcome  
Outcome  TimePoints 
To compare the intraoperative anesthetic requirements  End of Surgery 
To compare the intraoperative fentanyl requirements   End of surgery 
To compare the postoperative pain scores using NRS  0,2,4,12,24hrs 
To compare the time of first rescue analgesia requirement  Post Operative  
To record incidence of post operative nausea and vomiting  Post Operative 
To record incidence of post operative delirium using CAM ICU score   post operative 
- To compare the postoperative sedation score using the Modified Ramsay Sedation Scale(MRSS)  postoperative 
To compare the intraoperatively hemodynamic parameters  15mins 
 
Target Sample Size   Total Sample Size="50"
Sample Size from India="50" 
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   N/A 
Date of First Enrollment (India)   25/08/2025 
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="0"
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  

Effective amelioration of pain following major abdominal surgery remains a fundamental challenge.       Acute postoperative pain after abdominal surgery can be a significant problem because it has been shown to alter the metabolic response, delayed recovery with a longer stay and increased morbidity, as well as the development of a chronic pain

 The intrinsic antinociceptive and anti-hyperalgesia properties of dexmedetomidine reportedly reduces postoperative opioid consumption.

      Perioperative ketamine has a consistent opioid-sparing effect, minimizes the development of tolerance, and reduces the postoperative pain scores

       Several pharmacological options exist for adequate perioperative pain management. However, each drug has its pros and cons limiting its broad applicability.

     Opioids remain the cornerstone of perioperative analgesia but they produce numerous side effects, including respiratory depression,postoperative hyperalgesia, nausea, vomiting, ileus, and urinary retention

       To the best of our knowledge, no study has assessed the postoperative analgesia produced by the simultaneous use of ketamine and dexmedetomidine (ketodex infusion) as intraoperative anesthetic adjuvants.

Multimodal approach to perioperative analgesia is recommended in clinical guidelines and is essential to Enhanced Recovery After Surgery (ERAS) clinical practice 
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