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CTRI Number  CTRI/2025/07/090822 [Registered on: 14/07/2025] Trial Registered Prospectively
Last Modified On: 11/07/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   To look for effectiveness of 2 different types of block for pain control after kidney surgery 
Scientific Title of Study   External oblique intercostal block with Rectus sheath block versus erector spinae plane block for post operative analgesia following nephrectomy-A randomised controlled comparative non-inferiority trial  
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Riya Kumari  
Designation  Academic Junior Resident  
Affiliation  Indira Gandhi Institute of Medical Sciences  
Address  Department of Anaesthesiology IGIMS Patna 800014 Bihar
Department of Anaesthesiology IGIMS patna 800014 Bihar
Patna
BIHAR
800014
India 
Phone  9123400970  
Fax    
Email  golden.riya16@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Nidhi Arun  
Designation  Additional professor  
Affiliation  Indira Gandhi Institute of Medical Sciences  
Address  Department of Anaesthesiology IGIMS Patna 800014 Bihar
Department of Anaesthesiology IGIMS Patna 800014 Bihar
Patna
BIHAR
800014
India 
Phone  9523594059  
Fax    
Email  janya.mukesh@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Dr Riya Kumari  
Designation  Academic Junior Resident  
Affiliation  Indira Gandhi Institute of Medical Sciences  
Address  Department of Anaesthesiology IGIMS Patna-800014 Bihar
Department of Anaesthesiology IGIMS Patna-800014 Bihar
Patna
BIHAR
800014
India 
Phone  9123400970  
Fax    
Email  golden.riya16@gmail.com  
 
Source of Monetary or Material Support  
Indira Gandhi Institute of Medical Sciences Patna Bihar 800014 India 
 
Primary Sponsor  
Name  Dr Riya Kumari  
Address  Department of Anaesthesiology IGIMS Patna-800014 Bihar 
Type of Sponsor  Other [Self] 
 
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 Riya Kumari   IGIMS   Ward block ,first floor,Department of Anaesthesiology Patna 800014
Patna
BIHAR 
9123400970

golden.riya16@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics committee ,IGIMS patna   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: N29||Other disorders of kidney and ureter in diseases classified elsewhere, (2) ICD-10 Condition: N288||Other specified disorders of kidney and ureter,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Not applicable   Not applicable  
Intervention  Postoperative analgesia   One group will receive External Oblique lntercostal Block with rectus sheath block using 0.25 percentage of bupivacaine combined with dexmedetomidine for post operative analgesia following nephrectomy in patients  
Intervention  Postoperative analgesia   The other group will receive Erector Spinae Plane Block using 0.25 percent of bupivacaine combined with dexmedetomidine for post-operative analgesia following nephrectomy in patients  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  50.00 Year(s)
Gender  Both 
Details  Posted for elective nephrectomy under general anesthesia
American society of anesthesiologists (ASA)status 1 or 2
 
 
ExclusionCriteria 
Details  Patients refusal
Pregnancy
Patients with allergy to Local anesthesia
BMI greater than 30 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
To compare analgesic efficacy of 2 different regional anesthesia techniques using median pain score during first 24 hours postoperatively   Post operative 1hr 2hr 4hr 8hr 12hr 24hr 
 
Secondary Outcome  
Outcome  TimePoints 
1st request for post-operative analgesia
Total morphine consumption
Patients satisfaction score
Adverse effects  
24hrs 
 
Target Sample Size   Total Sample Size="98"
Sample Size from India="98" 
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 3 
Date of First Enrollment (India)   20/08/2025 
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="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 two types of nerve blocks—external oblique intercostal with rectus sheath block (EOI + RSB) and erector spinae plane block (ESP)—for pain relief after kidney removal surgery (nephrectomy). Both techniques are designed to reduce the need for opioids and their side effects while improving recovery. The study involves 98 patients, who will receive either block after surgery, and their pain levels, time until first pain medication, total morphine use, side effects, and satisfaction will be monitored for 24 hours. The goal is to see if the EOI + RSB combination provides pain relief that is as good as the ESP block, offering another safe and effective option for postoperative care. 
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