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CTRI Number  CTRI/2026/03/106410 [Registered on: 17/03/2026] Trial Registered Prospectively
Last Modified On: 15/03/2026
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Comparison of two Ultrasound guided nerve blocks for pain relief after breast cancer surgery 
Scientific Title of Study   comparative study of ultrasound guided STIL (subtransverse interligamentary) vs ESP block (erector spinae plane) in patients undergoing MRM (modified radical mastectomy) at tertiary care hospital in Eastern India:A Randomised 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 MONISHA PATRA 
Designation  ACADEMIC JUNIOR RESIDENT 
Affiliation  ALL INDIA INSTITUTE OF MEDICAL SCIENCES, KALYANI 
Address  DEPARTMENTOFANAESTHESIA,1ST FLOOR, IPD BUILDING,AIIMS KALYANI,NH-34 CONNECTOR,, BASANTAPUR,SAGUNA,KALYANI,DISTRICT NADIA,WEST BENGAL 741245

Nadia
WEST BENGAL
741245
India 
Phone  9123352053  
Fax    
Email  monisha.anaesth_acjr25@aiimskalyani.edu.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr. KUMARI SNEHA 
Designation  ASSOCIATE PROFESSOR , DEPARTMENT OF ANAESTHESIA  
Affiliation  ALL INDIA INSTITUTE OF MEDICAL SCIENCES, KALYANI 
Address  DEPARTMENTOFANAESTHESIA,1ST FLOOR, IPD BUILDING,AIIMS KALYANI,NH-34 CONNECTOR,, BASANTAPUR,SAGUNA,KALYANI,DISTRICT NADIA,WEST BENGAL 741245

Nadia
WEST BENGAL
741245
India 
Phone  9818234861  
Fax    
Email  kumari.anesth@aiimskalyani.edu.in  
 
Details of Contact Person
Public Query
 
Name  Dr. KUMARI SNEHA  
Designation  ASSOCIATE PROFESSOR , DEPARTMENT OF ANAESTHESIA  
Affiliation  ALL INDIA INSTITUTE OF MEDICAL SCIENCES, KALYANI 
Address  DEPARTMENTOFANAESTHESIA,1ST FLOOR, IPD BUILDING,AIIMS KALYANI,NH-34 CONNECTOR,, BASANTAPUR,SAGUNA,KALYANI,DISTRICT NADIA,WEST BENGAL 741245

Nadia
WEST BENGAL
741245
India 
Phone  9818234861  
Fax    
Email  kumari.anesth@aiimskalyani.edu.in  
 
Source of Monetary or Material Support  
CENTRAL PHARMACY,1ST FLOOR,AIIMS Kalyani,NH-34 connector, Basantapur, saguna,kalyani, district Nadia, West Bengal 741245 
 
Primary Sponsor  
Name  Dr MONISHA PATRA 
Address  MARRIED HOSTEL, AIIMS KALYANI NH-34 CONNECTOR, BASANTAPUR, SAGUNA, KALYANI, NADIA,WEST BENGAL 741245 
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 MONISHA PATRA  AIIMS KALYANI  DEPARTMENT OF ANAESTHESIOLOGY,1ST FLOOR IPD BUILDING,NH-34 CONNECTOR BASANTAPUR SAGUNA KALYANI NADIA WEST BENGAL 741345
Nadia
WEST BENGAL 
9123352053

monisha.anaesth_acjr25@aiimskalyani.edu.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee All India Institute of Medical Sciences, Kalyani   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  ultrasound guided STIL (subtransverse interligamentary)   20ml of 0.2% Ropivacaine with4mg dexamethasone in each group 
Comparator Agent  ESP block (erector spinae plane) in patients undergoing MRM (modified radical mastectomy)  20ml of 0.2% Ropivacaine with4mg dexamethasone in each group 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Female 
Details  1. Female patients aged 18-65years, undergoing Modified Radical Mastectomy(MRM) under GA.
2. American Society of Anesthesiologist (ASA) performance status I and II patients. 
 
ExclusionCriteria 
Details  Refusal to participate in the study, obese patients BMI more then 35kg/m2, patients with local infection at needle insertion site, patient with history of psychiatric illness and on antipsychotic medications, patient with history of chronic pain. 
 
Method of Generating Random Sequence   Permuted block randomization, variable 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
comparison of postoperative pain, documented as NRS (Numeric Rating Scale) after STIL and ESP block in patient undergoing MRM surgery  after administration of block, comparison of intraoperative SBP,HR and postoperative pain scores at 0,2,6,12 and 24 hrs.  
 
Secondary Outcome  
Outcome  TimePoints 
comparison of time of first rescue analgesia, time taken for each procedure, intraoperative opioid requirement, total analgesic consumption, patient satisfaction score.  comparison of intraoperative rescue analgesia requirement 
 
Target Sample Size   Total Sample Size="66"
Sample Size from India="66" 
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)   27/03/2026 
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="2"
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   It is a prospective, randomized, double blinded comparative study to compare the analgesic efficacy of STIL vs ESP block in patients undergoing MRM (modified radical mastectomy) at tertiary care hospital in Eastern India.
Parameters that will be compared between the two groups will be the comparison of time to first rescue analgesia, time taken for each procedure, intraoperative opioid requirement after surgical incision, total analgesic consumption, patient satisfaction score according to Likerts scale.
 
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