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CTRI Number  CTRI/2018/03/012271 [Registered on: 01/03/2018] Trial Registered Retrospectively
Last Modified On: 29/08/2021
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Single Arm Study 
Public Title of Study   TO know the lowest volume of a drug combination to block the nerves of the hand 
Scientific Title of Study   Estimation of minimum effective local anaesthetic volume for ultrasound guided targeted peritruncal injection brachial plexus block 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
P.G Dissertation/2017/05/79  Protocol Number 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Sripriya R 
Designation  Associate professor 
Affiliation  Mahatma Gandhi Medical College and Research Institute 
Address  Department of Anaesthesiology Second floor Hospital block Mahatma Gandhi Medical College and Research Institute Pondicherry Cuddalore ECR, Pillayarkuppam Pondicherry

Pondicherry
PONDICHERRY
607402
India 
Phone  9365815939  
Fax    
Email  docsripriya@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Charulatha R 
Designation  Assistant Professor 
Affiliation  Mahatma Gandhi Medical College and Research Institute 
Address  Department of Anaesthesiology Second Floor Hospital BLock Mahatma Gandhi Medical College and Research Institute

Pondicherry
PONDICHERRY
607402
India 
Phone  9894909652  
Fax    
Email  ravindrancharulatha@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Charulatha R 
Designation  Assistant Professor 
Affiliation  Mahatma Gandhi Medical College and Research Institute 
Address  Department of Anaesthesiology Second Floor Hospital BLock Mahatma Gandhi Medical College and Research Institute

Pondicherry
PONDICHERRY
607402
India 
Phone  9894909652  
Fax    
Email  ravindrancharulatha@gmail.com  
 
Source of Monetary or Material Support  
Mahatma Gandhi Medical College and Research Institute Pondicherry Cuddalore ECR, Pillayarkuppam, Puducherry 607402 
 
Primary Sponsor  
Name  Mahatma Gandhi Medical College and Research Institute 
Address  Pondicherry Cuddalore ECR, Pillayarkuppam, Puducherry 607402 
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 Gobinath J  Mahatma Gandhi Medical College and Research Institute  Department of Anaesthesiology Second floor Hospital block Pondicherry Cuddalore ECR, Pillayarkuppam, Puducherry 607402
Pondicherry
PONDICHERRY 
8098023218

gobigopi@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Mahatma Gandhi Medical College and Research institute  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  Male patients age between 20 and 40 years with below elbow fractures,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Nil  Nil 
Intervention  Targeted intratruncal injection of brachial plexus and estimation of minimum effective volume using Masseys up and down method  Dixon and massey’s up and down methodology will be followed to determine the minimum effective volume in 50% of patients. The first patient will receive a block volume of 18 ml of 2%lignocaine with adrenaline and 0.5% bupivacaine 50:50 mixture. The volume for the subsequent patient will be determined by success or failure of the block. The drug volume will be increased by 3 ml in case of block failure and decreased by 3 ml in case of block success. This will be continued till 3 consecutive up and downs are observed. After three consecutive up and downs are observed, the drug volume will be altered by 1.5 ml and study continued till three consecutive up- downs are observed. The mid point of the down to up values will be taken as minimum effective volume in 50 % of individuals. 
 
Inclusion Criteria  
Age From  20.00 Year(s)
Age To  40.00 Year(s)
Gender  Male 
Details  ASA 1 and 2
Patients posted for bony surgery below elbow 
 
ExclusionCriteria 
Details  1) Patient refusal for the block
2) History of bleeding disorders
3) Local infection at the site of block
4) Pre-existing neurological deficit
5) Respiratory compromise.
6) Known allergy to local anaesthetic drug.
7) Patients in whom the supraclavicular sono-anatomy is not clear.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
volume of mixture of 2 % lignocaine with adrenaline and bupivacaine that can produce a successful motor and sensory block at 30 minutes.   Assessment of sensory and motor block every 10 minutes upto 30 minutes 
 
Secondary Outcome  
Outcome  TimePoints 
Duration of analgesia  Every 2 hrs till 6 hours 
 
Target Sample Size   Total Sample Size="20"
Sample Size from India="20" 
Final Enrollment numbers achieved (Total)= "21"
Final Enrollment numbers achieved (India)="21" 
Phase of Trial   Phase 4 
Date of First Enrollment (India)   25/05/2017 
Date of Study Completion (India) 31/07/2019 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) 31/07/2019 
Estimated Duration of Trial   Years="1"
Months="6"
Days="15" 
Recruitment Status of Trial (Global)
Modification(s)  
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  

When using LA to provide surgical anesthesia , we need to provide

1. Dense blockade

2. The duration of block should be such that it covers the entire duration of surgery and also provides adequate pain relief during the immediate post –operative period.

Our previous experience with supraclavicular brachial plexus block, has shown that lignocaine- bupivacaine combination can satisfy these two requirements.

The previous study by Trans etal, (3) have reported that 23 ml of the drug combination is the MEV required to produce block in 50 % of patients and MEV 95 is 42 ml.

We are however able to produce block in all patients by using 20 ml of the drug combination. So we decided to conduct this study to estimate the minimum effective volume to produce effective block using Masseys up and down method and hence determine the ED 95 

 
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