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CTRI Number  CTRI/2025/11/097177 [Registered on: 11/11/2025] Trial Registered Prospectively
Last Modified On: 10/11/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia
Other (Specify) [Pain relief]  
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A Study to Compare Two Pain Medicines given with a Numbing Drug Through a Tube in the Back to Control Pain After Lower Umbilical Surgery 
Scientific Title of Study   Efficacy of Nalbuphine versus Fentanyl as Epidural Adjuvants to Bupivacaine for Postoperative Analgesia in Infraumbilical Surgeries: A Comparative Study 
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. R. Brindha 
Designation  Professor and HOD - Department of Anaesthesiology 
Affiliation  Vinayaka Missions Kirupananda Variyar Medical College and Hospitals 
Address  Room number 15 Department of Anaesthesiology Vinayaka Missions Kirupananda Variyar Medical College and Hospitals

Salem
TAMIL NADU
636308
India 
Phone  9443247021  
Fax    
Email  mskbrins63@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr R Brindha 
Designation  Professor and HOD Department of Anaestheiology 
Affiliation  Vinayaka Missions Kirupananda Variyar Medical College and Hospitals 
Address  Room number 15 Department of Anaesthesiology Vinayaka Missions Kirupananda Variyar Medical College and Hospitals

Salem
TAMIL NADU
636308
India 
Phone  9443247021  
Fax    
Email  mskbrins63@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Aupama M 
Designation  Post Graduate - Department of Anaestheiology 
Affiliation  Vinayaka Missions Kirupananda Variyar Medical College and Hospitals 
Address  Room number 15 Department of Anaesthesiology Vinayaka Missions Kirupananda Variyar Medical College and Hospitals

Salem
TAMIL NADU
636308
India 
Phone  8754028970  
Fax    
Email  anu.mohankumar@gmail.com  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  Vinayaka Missions Kirupananda Variyar Medical College & Hospital 
Address  Chinna Seeragapadi, Salem – 636 308, Tamil Nadu India 
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 M Anupama  Vinayaka Missions Kirupananda Variyar Medical College and hospitals Salem  Room number 15 Department of Anaesthesiology Vinayaka Missions kirupananda variyar medical college and hospitals
Salem
TAMIL NADU 
8754028970

anu.mohankumar@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee, Vinayaka Missions Kirupananda Variyar Medical College and Hospitals, Salem  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  for surgical procedures 
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Fentanyl  Single shot Fentanyl 100mcg will be given along with 0.125% Bupivacaine diluted to 10 mL in normal saline via epidural catheter, postoperatively when sensory level drops to the umbilicus level 
Intervention  Nalbuphine  Single-shot Nalbuphine 10mg will be given along with 0.125% Bupivacaine diluted to 10 mL in normal saline via epidural catheter, postoperatively when sensory level drops to the umbilicus level 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1. ASA Physical Status 1 and 2
2. Patients undergoing elective infraumbilical surgeries under combined spinal-epidural
anaesthesia
3. Patients willing to provide informed consent 
 
ExclusionCriteria 
Details  1. Patients on opioids, tricyclic antidepressants, or alpha-2 agonists
2. Patients with coagulation defects and patients on anticoagulants
3. Patients with neuromuscular disorders
4. Patients with disease and deformities of spinal cord
5. Patients allergic to local anaesthetic drugs 
 
Method of Generating Random Sequence   Coin toss, Lottery, toss of dice, shuffling cards etc 
Method of Concealment   Case Record Numbers 
Blinding/Masking   Double Blind Double Dummy 
Primary Outcome  
Outcome  TimePoints 
Duration of postoperative analgesia, defined as the time from epidural drug
administration to the first request for rescue analgesia 
0 min, 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 1 hr, 1.5 hr, 2 hr, 2.5 hr, 3 hr, 3.5 hr, 4 hr, 4.5 hr, 5 hr, 5.5 hr, 6 hr, 7 hr, 8 hr, 10 hr, 12 hr after administering drug 
 
Secondary Outcome  
Outcome  TimePoints 
Pain scores at rest & movement using the Visual Analog Scale (VAS) at predefined
time intervals 
From 0 min of administering drug & 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 1 hr, 1.5 hr, 2 hr, 2.5 hr, 3 hr, 3.5 hr, 4 hr, 4.5 hr, 5 hr, 5.5 hr, 6 hr, 7 hr, 8 hr, 10 hr, 12 hr after administering drug 
Incidence of side effects & derangement in haemodynamic parameters  From 0 min of administering drug & 5 min, 10 min, 15 min, 20 min, 25 min, 30 min, 1 hr, 1.5 hr, 2 hr, 2.5 hr, 3 hr, 3.5 hr, 4 hr, 4.5 hr, 5 hr, 5.5 hr, 6 hr, 7 hr, 8 hr, 10 hr, 12 hr after administering drug 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
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)   21/11/2025 
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 study aims to compare the efficacy and safety of nalbuphine and fentanyl as epidural adjuvants to 0.125 percent bupivacaine for postoperative analgesia in patients undergoing infraumbilical surgeries. Inadequate pain control after surgery can delay recovery and increase complications therefore optimizing epidural analgesia is crucial. Fentanyl a commonly used opioid offers effective pain relief but may cause side effects such as respiratory depression and nausea. Nalbuphine a kappa agonist and partial mu antagonist provides comparable analgesia with fewer side effects. Sixty adult patients ASA I and II scheduled for elective infraumbilical surgeries under combined spinal epidural anaesthesia will be randomly assigned to receive either nalbuphine 10 mg or fentanyl 100 mcg with 0.125 percent bupivacaine via the epidural route. Postoperative parameters including duration of analgesia pain scores using the Visual Analog Scale haemodynamic stability and side effects will be monitored. The expected outcome is that nalbuphine will produce longer lasting analgesia lower pain scores and fewer opioid related adverse effects compared to fentanyl. 
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