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CTRI Number  CTRI/2026/02/105062 [Registered on: 27/02/2026] Trial Registered Prospectively
Last Modified On: 26/02/2026
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparison of Two Different Methods of Pain Relief After Abdominal Surgery 
Scientific Title of Study   A Comparative Study of Continuous Epidural Analgesia Versus Patient-Controlled Intravenous Analgesia in Postoperative Pain Management in Patients Undergoing Abdominal Surgeries 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
Nil  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Sri Giridharini 
Designation  Junior resident  
Affiliation  Chettinad hospital and research institute  
Address  12-B sreedharan street Ayyavoo Naidu colony Aminjikarai
Department of anaesthesia 1st floor Chettinad hospital and research institute Rajiv Gandhi Salai Kelambakkam 603103
Chennai
TAMIL NADU
600029
India 
Phone  9791045180  
Fax    
Email  sgiridharini@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Merlin Shalini Ruth S 
Designation  Professor of anaesthesiology  
Affiliation  Chettinad hospital and research institute  
Address  Chettinad hospital and research institute Rajiv Gandhi Salai Kelambakkam
Department of anaesthesia 1st floor Chettinad hospital and research institute Rajiv Gandhi Salai Kelambakkam 603103
Kancheepuram
TAMIL NADU
603103
India 
Phone  9790983957  
Fax    
Email  merlin5shalini@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Merlin Shalini Ruth S 
Designation  Professor of anaesthesiology  
Affiliation  Chettinad hospital and research institute  
Address  Chettinad hospital and research institute Rajiv Gandhi Salai Kelambakkam
Department of anaesthesia 1st floor Chettinad hospital and research institute Rajiv Gandhi Salai Kelambakkam 603103
Kancheepuram
TAMIL NADU
603103
India 
Phone  9790983957  
Fax    
Email  merlin5shalini@gmail.com  
 
Source of Monetary or Material Support  
Nil 
 
Primary Sponsor  
Name  CHRI 
Address  Chettinad hospital and research institute Rajiv Gandhi Salai Kelambakkam chennai 603103 
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 Sri Giridharini   Chettinad hospital and research institute   Department of anaesthesia 1st floor Chettinad hospital and research institute Rajiv Gandhi Salai Kelambakkam
Kancheepuram
TAMIL NADU 
9791045180

sgiridharini@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Human Ethics Committee for Student Research  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 
Comparator Agent  Continuous epidural analgesia   Continuous Epidural Analgesia and General Anaesthesia Patients in this group will undergo placement of an epidural catheter at the thoracic or lumbar level, depending on surgical site, under strict aseptic precautions prior to induction. Correct catheter placement will be confirmed before the administration of general anaesthesia. Postoperatively, the epidural will be activated with an initial bolus dose to assure effective pain relief. Patients will then be maintained on a continuous infusion consisting of Bupivacaine 0.125% combined with Fentanyl 2 µg/mL at 4 mL/hour. Adequacy of analgesia and possible complications will be closely monitored throughout the postoperative period 
Intervention  Intravenous Patient-Controlled Analgesia (IV PCA)  All patients will receive a standardized general anaesthesia protocol. Premedication will be administered with intravenous Midazolam 1 mg. Patients will be pre-oxygenated with 100% oxygen for 3 minutes, followed by induction using Propofol 1.5–2 mg/kg, Fentanyl 2–3 mcg/kg, and Atracurium 0.5 mg/kg to facilitate endotracheal intubation. Anaesthesia will be maintained with Isoflurane or Sevoflurane at 0.8–1 MAC in an oxygen-air mixture. Intravenous Paracetamol 15 mg/kg will be administered 30 minutes before the end of surgery and continued 8 hourly postoperatively as part of multimodal analgesia. Postoperative analgesia in this group will be provided using intravenous Patient-Controlled Analgesia (PCA) with morphine. After extubation, an initial intravenous bolus dose of 2 mg morphine will be administered. The PCA device will be programmed to deliver a demand dose of 1 mg morphine with a lockout interval of 20 minutes and no background infusion. Patients will be instructed preoperatively regarding the use of the PCA device. Pain scores will be assessed at predefined intervals, and patients will be monitored for opioid-related adverse effects such as nausea, vomiting, sedation, pruritus, and respiratory depression. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  Adults aged 18-70 years, ASA physical status I-III undergoing elective
abdominal surgeries. Patients able to communicate pain intensity effectively and operate the
PCA device independently 
 
ExclusionCriteria 
Details  Allergy to study drugs, coagulopathy or
anticoagulation therapy, and infection at the insertion site 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
Comparison of postoperative pain scores between the two groups using Visual Analog Scale (VAS)   2,6,12,24,48 hours 
 
Secondary Outcome  
Outcome  TimePoints 
Total opioid consumption in 24 hours
Requirement of rescue analgesia
Quality of recovery (QoR-15 score)
Hemodynamic parameters (HR, BP)
Incidence of adverse effects:
Hypotension
Bradycardia
Nausea/vomiting
Sedation
Respiratory depression 
2,6,24,48hours  
 
Target Sample Size   Total Sample Size="40"
Sample Size from India="40" 
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)   16/03/2026 
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 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   Postoperative pain management plays a crucial role in enhancing recovery and reducing complications following abdominal surgeries. Continuous Epidural Analgesia (CEA) and Intravenous Patient-Controlled Analgesia (IV PCA) are commonly used modalities for postoperative pain relief, each with its own advantages and limitations. This prospective randomized comparative study aims to evaluate and compare the efficacy of continuous epidural analgesia and intravenous patient-controlled analgesia in patients undergoing abdominal surgeries.
All patients will receive standardized general anaesthesia. Postoperatively, one group will receive continuous epidural infusion of local anaesthetic with opioid, while the other group will receive intravenous morphine through a patient-controlled analgesia pump. Postoperative pain scores, opioid consumption, quality of recovery, hemodynamic parameters, and adverse effects will be assessed and compared between the two groups.
 
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