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CTRI Number  CTRI/2025/10/096521 [Registered on: 28/10/2025] Trial Registered Prospectively
Last Modified On: 27/10/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Reducing the tourniquet pain by using Ultrasound guided intercostobrachial nerve block following axillary brachial plexus block during forearm surgeries. 
Scientific Title of Study   Effect of ultrasound guided and landmark guided intercostobrachial nerve block on tourniquet pain following axillary brachial plexus block in patients undergoing forearm surgeries A Double blinded randomized 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 Dinesh Naik 
Designation  Professor 
Affiliation  S Nijalingappa medical college 
Address  Department of Anaesthesiology SNMC and HSK hospital ,BAGALKOT-587102 India

Bagalkot
KARNATAKA
587102
India 
Phone  9986514559  
Fax    
Email  dinesh.jnmc2002@gmail.com   
 
Details of Contact Person
Scientific Query
 
Name  Dr Dinesh Naik 
Designation  Professor 
Affiliation  S Nijalingappa medical college 
Address  Department of Anaesthesiology SNMC and HSK hospital ,BAGALKOT-587102 India

Bagalkot
KARNATAKA
587102
India 
Phone  9986514559  
Fax    
Email  dinesh.jnmc2002@gmail.com   
 
Details of Contact Person
Public Query
 
Name  Dr Soumya 
Designation  Junior Resident  
Affiliation  S Nijalingappa medical college 
Address  Department of Anaesthesiology SNMC and HSK hospital ,BAGALKOT-587102 India

Bagalkot
KARNATAKA
587102
India 
Phone  7892183131  
Fax    
Email  soumya2177@gmail.com  
 
Source of Monetary or Material Support  
Patients coming to S Nijalingappa Medical College and HSK hospital,Nvanagar Bagalkot,India pincode-587103 who are posted for forearm surgeries. 
 
Primary Sponsor  
Name  S Nijalingappa Medical college  
Address  Department of Anaesthesiology, Second floor, S NIjalingappa medical college and HSK hospital ,Navanagar,Bagalkot,India Pincode-587103 
Type of Sponsor  Private 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 Dinesh Naik  S Nijalingappa Medical college and HSK Hospital,   Ortho OT Complex ,Ground floor ,S nijalingappa medical college and HSK hospital,Navanagar Bagalkot 587103
Bagalkot
KARNATAKA 
09986514559

dinesh.jnmc2002@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
S NIJALINGAPPA MEDICAL COLLEGE AND HANAGAL SHRI KUMARESHWAR HOSPITAL AND RESEARCH CENTRE BAGALKOT  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  Forearm surgeries 
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Axillary nerve block  The axillary block(control group) will be performed by injecting 30 mL of 1.5% lignocaine with adrenaline using US guidance and next to each nerve, 6-8mL of 1.5% lignocaine with adrenaline injected.  
Intervention  Landmark guided-Intercostobrachial nerve block  the ICBN block will be performed without US guidance and based on the landmark using superficial anatomy and nerve pathway by subcutaneous injection of 6mL of 1.5% lignocaine with adrenaline at the site of the axillary pulse. 
Intervention  Ultrasound guided-Intercostobrachial nerve block  ICBN will be identified by sonography on the axillary artery and superficial to deep fascia; the block will be performed by injecting 6mL of 1.5% lignocaine with adrenaline.  
 
Inclusion Criteria  
Age From  20.00 Year(s)
Age To  50.00 Year(s)
Gender  Both 
Details  American society of Anaesthesiologists(ASA) physical status I-II
Indication of forearm and hand surgery lasting at least 90minutes
Body mass index between 23 and 28
 
 
ExclusionCriteria 
Details  History of allergy to local anaesthetics
Coagulation problems
Upper extremity neuropathy
Vasculitis
Unstable hemodynamics
History of seizures
Patient who cannot communicate with investigator

 
 
Method of Generating Random Sequence   Random Number Table 
Method of Concealment   Not Applicable 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Reduced tourniquet pain and delayed onset of pain during forearm surgeries.
Ultrasound -guided intercostobrachial nerve (ICBN) block may offer greater accuracy and
effectiveness compared to the traditional landmark-guided technique.
 
Intraoperative  
 
Secondary Outcome  
Outcome  TimePoints 
Consumption of rescue analgesics with the onset of tourniquet pain  Intraoperative  
 
Target Sample Size   Total Sample Size="105"
Sample Size from India="105" 
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/ Phase 3 
Date of First Enrollment (India)   10/11/2025 
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  
•The aim of this study is to compare the intensity of tourniquet induced pain between the group A(Ultrasound guided Axillary block),group B(Ultrasound guided axillary block with landmark guided Intercostobrachial nerve block),group C(Ultrasound guided Axillary block with Ultrasound guided Intercostobrachial nerve block) following axillary brachial plexus block in patients undergoing forearm surgeries. And also To compare the onset of tourniquet pain between the study groups and To compare the total analgesics consumption between the study groups
•The axillary block of the brachial plexus is a routine and efficient method for anesthesia of the upper limb during forearm and hand surgery . A tourniquet is used to control bleeding in the surgical field.Application of tourniquet can cause intolerable dull, achy pain in the tissues underneath.Tourniquet pain may have cutaneous and ischemic components.Despite the axillary block , a tourniquet can cause pain that is not tolerable for the patient and disrupts the surgical process, because part of the inner arm is innervated by the intercostobrachial nerve lateral cutaneous branch of the second intercostal nerve (i.e ICBN)
•The intercostobrachial nerve (ICBN) is a pure sensory nerve that arises primarily from the second intercostal nerve (T2).The posterolateral and medial aspect of the arm is supplied by the axillary (AXN) and intercostobrachial nerves (ICBN), which are not anaesthetised by an axillary brachial plexus block (ABPB)
•Blocking the brachial plexus in the axillary area has no side effects (such as pneumothorax, phrenic nerve injury, and recurrent laryngeal nerve injury), as seen with other methods of blocking this plexus, making it the most suitable approach. It seems that in addition to the axillary block of the brachial plexus, this problem can be overcome by blocking the ICBN. Therefore, in the present clinical trial, in addition to axillary block in patients with surgery of the hand and forearm, we also block the ICBN to examine whether the pain caused by a tourniquet during surgery disappears.
•Hence this study is to compare Intercostobrachial nerve (ICBN) block with and without Ultrasound guidance in reducing the intensity of tourniquet induced pain during the axillary block in forearm surgeries.
The use of an ICBN block may associated with reduced tourniquet pain and delayed onset of pain during the procedure. Ultrasound -guided intercostobrachial nerve (ICBN) block may offer greater accuracy and effectiveness compared to the  landmark-guided technique 
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