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CTRI Number  CTRI/2025/09/094973 [Registered on: 17/09/2025] Trial Registered Prospectively
Last Modified On: 21/09/2025
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 compare different concentrations and volumes of bupivacaine for open inguinal hernia surgery in children 
Scientific Title of Study   Comparison of Post Operative Analgesic Efficacy of Quadratus Lumborum Block With Bupivacaine of Same Dose and Different Concentrations in Paediatric Patients Undergoing Unilateral Open Inguinal Hernia Repair 
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 Mayank Singh 
Designation  PG Resident  
Affiliation  VMMC and Safdarjung Hopital 
Address  Department of Anaesthesia and Intensive care , Vardhman Mahavir medical college and Safdarjung Hospital, Ansari Nagar West, New Delhi,

South West
DELHI
110029
India 
Phone  7023799729  
Fax    
Email  mayank07singh007@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Arushi Gupta 
Designation  Professor  
Affiliation  VMMC and Safdarjung Hopital 
Address  Department of Anaesthesia and Intensive care , Vardhman Mahavir medical college and Safdarjung Hospital, Ansari Nagar West, New Delhi,

South West
DELHI
110029
India 
Phone  8800660246  
Fax    
Email  drarushigupta@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Arushi Gupta 
Designation  Professor  
Affiliation  VMMC and Safdarjung Hopital 
Address  Department of Anaesthesia and Intensive care , Vardhman Mahavir medical college and Safdarjung Hospital, Ansari Nagar West, New Delhi,

South West
DELHI
110029
India 
Phone  8800660246  
Fax    
Email  drarushigupta@gmail.com  
 
Source of Monetary or Material Support  
VMMC and Safdarjung Hospital ,Ansari Nagar East , New Delhi , Pincode- 110029 
 
Primary Sponsor  
Name  VMMC and Safdarjung Hospital 
Address  VMMC and Safdarjung Hospital ,Ansari Nagar East , New Delhi , Pincode- 110029 
Type of Sponsor  Government 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 Mayank Singh  First floor, Main OT building , Safdarjung Hospital  Department of Anaesthesia and Intensive care , Vardhman Mahavir medical college and Safdarjung Hospital, Ansari Nagar West, New Delhi,
South West
DELHI 
7023799729

mayank07singh007@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics committee, VMMC and Safdarjung Hospital  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied
Modification(s)  
Health Type  Condition 
Patients  (1) ICD-10 Condition: K409||Unilateral inguinal hernia, without obstruction or gangrene,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Ultrasound guided Quadratus lumborum block with 0.3ml/kg of 0.25% bupivacaine  Ultrasound-guided Quadratus Lumborum block will be administered after induction of anesthesia using 0.3 ml/kg of 0.25% bupivacaine (single-shot). The route of administration will be peripheral nerve block under ultrasound guidance. Only a single dose will be given, with no repeat dosing planned. The expected duration of analgesic effect is approximately 12–18 hours postoperatively, depending on patient response.  
Intervention  Ultrasound guided Quadratus lumborum block with 0.6ml/kg of 0.125% bupivacaine  Ultrasound-guided Quadratus Lumborum block will be administered after induction of anesthesia using 0.6 ml/kg of 0.125% bupivacaine (single-shot). The route of administration will be peripheral nerve block under ultrasound guidance. Only a single dose will be given, with no repeat dosing planned. The expected duration of analgesic effect is approximately 12–18 hours postoperatively, depending on patient response. 
 
Inclusion Criteria  
Age From  1.00 Year(s)
Age To  7.00 Year(s)
Gender  Both 
Details  Patients aged 1 – 7 years with American Society of Anesthesiologists physical status
I-II scheduled for unilateral open inguinal hernia surgery. 
 
ExclusionCriteria 
Details  EXCLUSION CRITERIA
1. Infection at the site of block
2. Coagulopathy
3. Pre-existing neurological disease
4. Allergy to local anesthetics 
 
Method of Generating Random Sequence   Stratified block randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To compare post operative analgesic efficacy of Quadratus lumborum block with bupivacaine
of same dose and different concentrations in paediatric patients undergoing open inguinal
hernia repair using the CHEOPS score at 6 hours. 
CHEOPS score at 6 hours. 
 
Secondary Outcome  
Outcome  TimePoints 
1.To compare CHEOPS score at 0,3,8,18 and 24 hours.
2.To compare time to first rescue analgesia
3.To compare Total doses of analgesics over 24 hours duration .
4.To evaluate intraoperative fentanyl requirement 
CHEOPS score at 0,3,8,18 and 24 hours post operative. 
 
Target Sample Size   Total Sample Size="76"
Sample Size from India="76" 
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 2 
Date of First Enrollment (India)   01/10/2025 
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 is a prospective, interventional trial designed to assess the effectiveness of ultrasound-guided Quadratus Lumborum Block (QLB) for postoperative pain relief in children aged 1 to 7 years undergoing unilateral open inguinal hernia surgery. The research compares two groups receiving the same total dose of bupivacaine (0.75 mg/kg) but at different concentrations and volumes: Group A receives 0.3 ml/kg of 0.25% bupivacaine, while Group B receives 0.6 ml/kg of 0.125% bupivacaine. The primary outcome is pain score measured using the CHEOPS scale at 6 hours post-surgery. Secondary outcomes include pain scores at additional time intervals, time to first rescue analgesia, total analgesic consumption over 24 hours, and intraoperative fentanyl usage. The goal is to determine whether a lower concentration with higher volume offers pain relief comparable to a higher concentration with lower volume, while remaining within safe limits for pediatric patients. 
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