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CTRI Number  CTRI/2025/10/095851 [Registered on: 09/10/2025] Trial Registered Prospectively
Last Modified On: 07/10/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Epidural Nefopam or Tramadol: What Works Better for Pain Relief After Lower Abdominal Surgery? 
Scientific Title of Study   Comparative Study Of Epidural Nefopam And Tramadol For Post-operative Pain Management In Lower Abdominal Surgeries: A Randomised Comparative Clinical 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 Prasanna Vadhanan 
Designation  HOD 
Affiliation  Vinayaka Missions Medical College and Hospital 
Address  Room No 1, Department of Anaesthesia, Vinayaka Missions Medical College and Hospital, Keezhakasakudymedu, Kottuchery Post, Karaikal, Puducherry-609609

Karaikal
PONDICHERRY
609609
India 
Phone  9486489690  
Fax    
Email  vadhanan.prasanna@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Mancy ChristabelS 
Designation  Junior Resident/ Post Graduate 
Affiliation  Vinayaka Missions Medical College and Hospital 
Address  Room No.2, Department of Anaesthesia, Vinayaka Missions Medical College and Hospital,Keezhakasakudymedu, Kottuchery Post, Karaikal, Puducherry- 609609

Karaikal
PONDICHERRY
609609
India 
Phone  9790552281  
Fax    
Email  mansichristabel@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Mancy ChristabelS 
Designation  Junior Resident/ Post Graduate 
Affiliation  Vinayaka Missions Medical College and Hospital 
Address  Room No.2, Department of Anaesthesia, Vinayaka Missions Medical College and Hospital,Keezhakasakudymedu, Kottuchery Post, Karaikal, Puducherry- 609609


PONDICHERRY
609609
India 
Phone  9790552281  
Fax    
Email  mansichristabel@gmail.com  
 
Source of Monetary or Material Support  
Nil 
 
Primary Sponsor  
Name  Vinayak Missions Medical College and Hospital 
Address  Vinayaka Missions Medical College and Hospital, Keezhakasakudymedu,Kottuchery Post, Karaikal, Puducherry-609609 
Type of Sponsor  Private medical college 
 
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 Mancy Christabel S  Vinayaka Missions Medical College and Hospital  Department of Anaesthesia,Vinayaka Missions Medical College and Hospital,Keezhakasakudymedu, Kottuchery Post, Puducherry- 609609
Karaikal
PONDICHERRY 
9790552281

mansichristabel@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: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Group Nefopam  Patients will receive 8 ml of 0.125 percentage of Bupivacaine containing 5 mg of Nefopam epidurally at the end of surgery 
Comparator Agent  Group Tramadol  Patients will receive 8 ml of 0.125 percentage of Bupivacaine containing 20 mg of Tramadol epidurally at the end of surgery  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1) ASA physical status I and II
2) Patients scheduled for lower abdominal surgeries
3) Patients capable of providing informed written consent and understanding pain assessment instruction
4) Body Mass Index less than 35 kg per metre square 
 
ExclusionCriteria 
Details  1) Patient refusal
2) Contraindication to neuraxial anaesthesia
3) History of significant cardiovascular, respiratory, hepatic or renal dysfunction
4) Known hypersensitivity to study medications
5) History of chronic pain or regular analgesic medication use
6) Psychiatric disorders or inability to comprehend pain assessment tools
7) Pregnancy or Lactation
8) Body Mass index more than 35 kg per metre square 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Case Record Numbers 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
To assess and compare the analgesic efficacy of epidural nefopam versus tramadol in patients undergoing lower abdominal surgeries using Visual Analog Scale (VAS) pain score.  1st, 2nd, 4th, 6th, 12th ,24th hour 
 
Secondary Outcome  
Outcome  TimePoints 
To compare the incidence and severity of adverse effects associated with epidural nefopam and tramadol  upto first 24 hours postoperatively 
 
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 2/ Phase 3 
Date of First Enrollment (India)   22/10/2025 
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 Applicable 
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  

Summary
This prospective, randomized comparative clinical trial investigates the effectiveness and safety of epidural nefopam versus epidural tramadol for postoperative pain management in adult patients undergoing lower abdominal surgeries. One hundred eligible patients will be randomized into two groups:

  • Group N (Nefopam): 8 ml of 0.125% bupivacaine with 5 mg nefopam epidurally

  • Group T (Tramadol): 8 ml of 0.125% bupivacaine with 20 mg tramadol epidurally

The primary outcome is postoperative pain intensity measured by Visual Analog Scale (VAS) at rest and during movement over 24 hours.
Secondary outcomes include onset and duration of analgesia, need for rescue analgesics, and incidence of adverse effects such as nausea, vomiting, sedation, hypotension, urinary retention, and respiratory depression.

The study aims to determine whether epidural nefopam can provide pain relief comparable to tramadol while reducing opioid-related side effects. Findings are expected to guide clinicians in selecting optimal epidural analgesics for enhanced recovery, improved patient satisfaction, and reduced opioid use in lower abdominal surgery patients.

 
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