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CTRI Number  CTRI/2018/01/011076 [Registered on: 01/01/2018] Trial Registered Retrospectively
Last Modified On: 20/11/2018
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Single injection vs double injection technique in USG guided supraclavicular brachial plexus block  
Scientific Title of Study   A comparative analysis of single needle pass two injection technique versus single corner pocket injection technique using Ropivacaine in USG guided supraclavicular brachial plexus block 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Bhanu Pratap Swain 
Designation  Assistant Professor 
Affiliation  Tata Main Hospital 
Address  Department of Anaesthesiology and Critical Care Tata Main Hospital Inner Circle Road Northern Town Bistupur Jamshedpur
Inner Circle Road Northern Town Bistupur Jamshedpur Pin: 831001
Purbi Singhbhum
JHARKHAND
831001
India 
Phone  9471519719  
Fax    
Email  bhanu_swain@yahoo.co.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr Bhanu Pratap Swain 
Designation  Assistant professor 
Affiliation  Tata Main Hospital 
Address  Department of Anaesthesiology and Critical Care Tata Main Hospital Inner Circle Road, Bistupur Northern Town, Bistupur, Jamshedpur
Inner Circle Road Northern Town Bistupur Jamshedpur Pin:831001
Purbi Singhbhum
JHARKHAND
831001
India 
Phone  9471519719  
Fax    
Email  bhanu_swain@yahoo.co.in  
 
Details of Contact Person
Public Query
 
Name  Dr Maneesha Mrigank 
Designation  PG student 
Affiliation  Tata Main Hospital 
Address  Department of Anaesthesiology and Critical Care Tata Main Hospital Inner Circle Road, Bistupur Northern Town, Bistupur, Jamshedpur
Inner Circle Road Northern Town Bistupur Jamshedpur Pin: 831001
Purbi Singhbhum
JHARKHAND
831001
India 
Phone  7042700710  
Fax    
Email  mrigank.maneesha@gmail.com  
 
Source of Monetary or Material Support  
Tata Main Hospital C Road West, Northern Town Bistupur, Jamshedpur 831001 Jharkhand (IND) 
 
Primary Sponsor  
Name  Tata Main Hospital 
Address  Inner Circle Road, Northern Town, Bistupur, Jamshedpur, Jharkhand 831001 
Type of Sponsor  Private hospital/clinic 
 
Details of Secondary Sponsor  
Name  Address 
Dr Maneesha Mrigank  Department of Anesthesiology & Critical care Tata Main Hospital Inner circle Road Northern town, Bistupur Jamshedpur Jharkhand 831001 
Dr Pratap Rudra Mohanty  Department of Anesthesiology & Critical care Tata Main Hospital Inner circle Road Northern town, Bistupur Jamshedpur Jharkhand 831001  
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Bhanu Pratap Swain  Tata Main Hospital  Department of Anaesthesia & Critical Care C Road Bistupur Jamshedpur
Purbi Singhbhum
JHARKHAND 
06576641166

bhanu_swain@yahoo.co.in 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Ethics Committee Tata Main Hospital  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied
Modification(s)  
Health Type  Condition 
Patients  All patients planned for upper limb surgery under supraclavicular brachial plexus block with in a age group of 17 to 70 years in Tata Main Hospital, (1) ICD-10 Condition: S629||Unspecified fracture of wrist andhand,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Arm 1: single needle pass two injection technique of USG guided supraclavicular brachial plexus block  Nerve block needle will be introduced from lateral to medial in plane with the ultrasound probe in such a manner that the needle will be positioned in the corner pocket formed by the subclavian artery and 1st rib (Imaginary 5 O’ clock position of artery) by passing through the neural cluster. Ropivacaine 0.5% 10 ml will be the injected in the corner pocket after confirming negative aspiration of blood. Then needle will be withdrawn and rest 20 ml of 0.5% Ropivacaine will be injected in the center of the neural cluster. No needle redirection will be done in this technique. 
Comparator Agent  Arm 2: Single corner pocket injection technique of USG guided supraclavicular brachial plexus block   In single injection arm 30 ml of Ropivacaine 0.5% will be injected in the corner pocket formed by the subclavian artery & 1st rib 
 
Inclusion Criteria  
Age From  17.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  ASA 1 to 3 patients who are planned for forearm surgery
 
 
ExclusionCriteria 
Details  1. Uncooperative patients
2. Patients with neurological disorder or preexistin neurological deficits in the operative limb
3. Patients allergic to Ropivacaine
4. Infection at the site of injection
5. BMI>35
6.Severe coagulopathy
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   On-site computer system 
Blinding/Masking   Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To assess and compare onset of block (time to complete sensory and motor block in the distribution of ulnar, median, radial and musculocutaneus nerves) in both arms
 
Sensory and motor blocks will be evaluated post injection every 5 min until 30 min by an anesthesiologist blinded to the technique of injection. 
 
Secondary Outcome  
Outcome  TimePoints 
Duration of sensory block:
Duration of motor block:
Duration of analgesia:
Time to perform the block:
Complication if any: 
Duration of sensory block is defined as the time elapsed from onset sensory block to complete recovery of sensation to touch. Duration of motor block is defined as the time elapsed from onset motor block to complete recovery of motor movement in all muscles. Duration of analgesia is defined as the time from the onset of complete block till the patient requires rescue analgesia for the first time.
 
 
Target Sample Size   Total Sample Size="80"
Sample Size from India="80" 
Final Enrollment numbers achieved (Total)= "100"
Final Enrollment numbers achieved (India)="100" 
Phase of Trial   N/A 
Date of First Enrollment (India)   02/06/2016 
Date of Study Completion (India) 01/11/2017 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   "None yet" 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Brief Summary  

Ultrasound guided supraclavicular brachial plexus block provides fast onset, complete, safe and reliable anesthesia for upper limb surgery. However there were limited literatures describing the optimal injection technique in the brachial plexus under ultrasound guidance. Few literatures suggest that the single injection of local anesthetics in the corner pocket formed by the intersection between subclavian artery and the 1st rib is enough to get adequate surgical anaesthesia. Others suggested multiple injections to achieve adequate spread of drug in the plexus. However the overall success of surgical anesthesia didn’t differ significantly at the end of 30 minutes. 

In most places double injection technique of ultrasound guided supraclavicular block (half of total volume of local anesthetic injected in the corner pocket and other half inside the plexus or upper part of brachial plexus) is followed and taught. However double injection technique requires multiple needle passes, which increases patient discomfort.

Though single corner pocket injection is associated with less no of needle passes and less procedural time, but associated with delayed onset and sometimes less successful block of the musculocutaneus nerve. 

Therefore we felt the need to find out a technique that will combine the benefits of both the above techniques to ensure quick and effective block with minimal needle passes. So we modified the double injection technique where two injections are given in a single needle pass. In this technique we injected only 1/3rd of drug (10 ml of Ropivacaine 0.5%) at the corner pocket and rest 2/3rd of drug (20 ml of 0.5% Ropivacaine) in the center of neural cluster while withdrawing the needle. No needle redirection is done during the 2nd injection as needle is just withdrawn in to the neural cluster after injecting in the corner pocket. 

To find out the effectiveness of this novel technique, we set up a study to compare it with single corner pocket injection technique (30 ml of 0.5% Ropivacaine deposited in the corner pocket formed by 1st rib and subclavian artery) in terms of onset and quality of block.

We hypothesise that the two injection technique will lead to quicker and complete block of upper limb than the single injection technique.



 
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