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CTRI Number  CTRI/2025/11/097955 [Registered on: 24/11/2025] Trial Registered Prospectively
Last Modified On: 22/11/2025
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Single Arm Study 
Public Title of Study   Incidence of pain after nerve block wears off in patients undergoing arthroscopic shoulder surgeries. 
Scientific Title of Study   Rebound pain in patients undergoing orthopedic shoulder surgeries under interscalene block with general anesthesia: An observational 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  Priya Genevieve Dmello 
Designation  Assistant Professor 
Affiliation  Kasturba medical college 
Address  Department of Anesthesiology Kasturba Medical college Manipal Udupi

Udupi
KARNATAKA
576104
India 
Phone  9480014695  
Fax    
Email  priya.dmelo90@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Priya Genevieve Dmello 
Designation  Assistant Professor 
Affiliation  Kasturba medical college 
Address  Department of Anesthesiology Kasturba Medical college Manipal Udupi

Udupi
KARNATAKA
576104
India 
Phone  9480014695  
Fax    
Email  priya.dmelo90@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Savan Kumar 
Designation  Associate professor 
Affiliation  Kasturba medical college 
Address  Department of Anesthesiology Kasturba medical college Manipal Udupi

Udupi
KARNATAKA
576104
India 
Phone  8105308865  
Fax    
Email  savan.nagesh@manipal.edu  
 
Source of Monetary or Material Support  
Kasturba medical college 
 
Primary Sponsor  
Name  Priya G Dmello 
Address  Department of Anesthesiology KMC Manipal Udupi 
Type of Sponsor  Other [Priya G Dmello] 
 
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 
Priya Dmello  Kasturba Medical College  Operation theater(orthopedic), Department of Anesthesiology,KMC, Manipal, Udupi 576104
Udupi
KARNATAKA 
9480014695

priya.demello@manipal.edu 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Kasturba medical college and Kasturba hospital  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  ,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  ASA 1, 2 and 3
Arthroscopic shoulder repair, rotator cuff tears, Bankarts repair requiring interscalene block and general
anaesthesia  
 
ExclusionCriteria 
Details  Patients who are on strong opioids (morphine, fentanyl, nalbuphine, buprenorphine) or more than 2
analgesics in the preoperative period.
Patients who are contraindicated for interscalene block.
Not able to comprehend the VAS scoring system.
Failed block  
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
1. incidence of rebound pain
 
before the nerve block
postoperatively if NRS score more than 3; then a 24 hour recall of when pain was severe will be recorded on NRS scale. 
 
Secondary Outcome  
Outcome  TimePoints 
Predictors of rebound pain.  at 24 hours 
 
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   N/A 
Date of First Enrollment (India)   10/12/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  10/12/2025 
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 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   The patients undergoing arthroscopic shoulder surgery under interscalene and general anesthesia will be recruited. The patients will be screened for eligibility on the day prior to surgery for consent and for a baseline NRS pain score. After the surgery the patient will be shifted to the postoperative room where the patient who have a pain score of less than 3 will be recruited which will be considered as a successful interscalene block. The patients will be given analgesics over timely periods as per the departmental protocol over the next 24 hours. The patient will be asked to recall the first time at which the pain was unbearable and to score it in the first 24 hour period. Additional analgesics given to the patient will be recorded. It is a time bound study over a period of 1 year recruiting only those patients requiring shoulder arthroscopy. 
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