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CTRI Number  CTRI/2025/05/087855 [Registered on: 28/05/2025] Trial Registered Prospectively
Last Modified On: 19/05/2025
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   Comparison of Diaphragmatic Weakness In Extrafascial and Inrtafascial Interscalene Brachial Plexus Block 
Scientific Title of Study   Impact Of Interscalene Brachial Plexus Block Causing Hemidiphragmatic Paresis in Extrafascial And Intrafascial Injections : A Prospective Double Blind Randomized Clinical 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  DrKeerthana 
Designation  Resident doctor in Department of Anaesthesia 
Affiliation  Government medical college, Baroda 
Address  Room No 56,New RMO hostel ,jail road ,Anandpura, Government Medical College , Baroda Vadodara, Gujarat
Room No 56,New RMO hostel ,jail road ,Anandpura, Government Medical College , Baroda Vadodara, Gujarat
Vadodara
GUJARAT
390001
India 
Phone  8610038510  
Fax    
Email  keerthana.rk2023@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Neha Shah 
Designation  Associate Professor in Department of Anaesthesia 
Affiliation  Government medical college, Baroda 
Address  2nd Floor ,New Surgical BLock Department of Anaesthesiology,Government Medical College , Baroda Vadodara, Gujarat
2nd Floor ,New Surgical BLock Department of Anaesthesiology,Government Medical College , Baroda Vadodara, Gujarat
Vadodara
GUJARAT
390001
India 
Phone  8610038510  
Fax    
Email  nehakinitshah@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Neha Shah 
Designation  Associate Professor in Department of Anaesthesia 
Affiliation  Government medical college, Baroda 
Address  2nd Floor ,New Surgical BLock Department of Anaesthesiology,Government Medical College , Baroda Vadodara, Gujarat
2nd Floor ,New Surgical BLock Department of Anaesthesiology,Government Medical College , Baroda Vadodara, Gujarat
Vadodara
GUJARAT
390001
India 
Phone  8610038510  
Fax    
Email  nehakinitshah@gmail.com  
 
Source of Monetary or Material Support  
Department of Anesthesiology, SSG hospital Vadodara 390001, Gujarat,India 
 
Primary Sponsor  
Name  Government Medical college,Baroda 
Address  Department of Anesthesiology, New surgical block, SSG hospital Vadodara 390001, Gujarat, India 
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 
DrKeerthana  SSG Hospital Vadodara  Trauma Operation theatre,, first floor, New surgical block, Government Medical College, Vadodara
Vadodara
GUJARAT 
8610038510

keerthana.rk2023@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional ethics committee for Biomedical and health research,government medical college baroda   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Extrafascial interscalene Block  A 22 G Needle is inserted under ultrasound guidance connected to a peripheral nerve stimulator along the brachial plexus sheath identified as hyperechoic layer surrounding the C6,C7,C8 roots and transducer is manipulated as necessary to bring the needle into the imaging axis of the transducer through the middle scalene muscle towards the brachial plane. (The brachial plexus usually appears as the ‘The stop light sign’, made up of three root structures C5,C6,C7). Thereafter, needle should be slowly advanced towards the lateral border of brachial plexus sheath .The final needle tip position will be lateral to the brachial plexus sheath . The on-screen calliper measurement tool will be used to define this distance of 3-4 mm, with the proximal calliper placed on the lateral border of the plexus sheath and the distal calliper extended laterally until the designated distance is reached, marking the target end point for the needle tip position and drug is injected extrafascially. 
Comparator Agent  Intrafascial Interscalene Nerve block  The needle should be slowly advanced till it pierce brachial plexus sheath. The final needle tip position will be within the brachial plexus sheath in between the C5 and C6 nerve roots and drug is injected intrafascially 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patient posted for mid shaft and distal humerus surgeries
Age Group in the range of 18 to 65 years of either sex.
Weight in the range of 45 to 70 kilogram.
ASA grade 1 and 2
Duration of Surgery Less than 3 hours.
Patient able to give written and informed consent.
 
 
ExclusionCriteria 
Details  Patient not willing for procedure.
Existing neurological deficit in the upper limb, history of neck surgery or radiotherapy severe pulmonary disease, chest deformity, Contraindications to peripheral nerve block(allergy to local anaesthetics, coagulopathy, infection in the area), and pregnancy.
Patients with significant history of drug or alcohol abuse, psychiatric illness. 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   On-site computer system 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Comparing the Hemidiaphragmatic paresis by measuring the percentage of reduction in diaphragmatic excursion with the help of M-mode ultrasonography.   Before and 30 minutes after the interscalene block in all patients. 
 
Secondary Outcome  
Outcome  TimePoints 
To be observed for difference in
Peak expiratory flow rate
FEV1 ( Forced expiratory volume in 1 sec)
Measured by digital spirometer-peak flow meter device before and 30 minutes
after giving block.
To be observed for change in Respiratory rate and SpO2 perioperatively by pulse oximeter.
Sensory block will be assessed by observing time to achieve complete sensory effect and its duration.
Motor block will be assessed by observing time to achieve complete motor effect and its duration.
To be observed for block efficacy (success rate) in terms of additional anaesthsia requirement during surgery (such as IV Fentanyl 1-2mcg/kg , local infiltration, Inj. Ketofol 1:1 ) .
Perioperatively haemodynamic parameters will be observed ( pulse rate, mean arterial pressure).
Complications if any will be observed perioperatively for 24 hrs. 
After standard instructions, the patient in a sitting
upright position will be asked to inspire maximally and blow into the device as fast and strong as possible. The test will be repeated three times and the best value will be recorded with a bedside peakflow meter
before procedure and 30 minutes after procedure.
 
 
Target Sample Size   Total Sample Size="70"
Sample Size from India="70" 
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 4 
Date of First Enrollment (India)   01/09/2025 
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="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 aim of study is to compare Extrafascial and intrafascial injections using interscalene approach of brachial plexus block causing hemidiphragmatic paresis in midshaft and distal humerus surgeries.

in Group E , patients will be given interscalene nerve block via Extrafascial injection  under USG guidance.

in Group I, patients will be given interscalene nerve block via Intrafascial injection under USG guidance.

Total 15ml volume of drug solution will be prepared with 0-5% bupivacaine 15 ml with 5 microgram of Adrenaline (1:200000)

The primary outcome is to compare hemidiaphragmatic paresis with M-mode ultrasonography befor / 30 minuts after the interscalere block.

Secondary outcome, difference in Peak expiratony flow rate, Forced expiratory  Volume in /sec, change in respiratory rate., assesment of sensory block in terms of time to achieve complete effect and duration, and requirement of additional anaesthesia  in terms of IV Fentanyl, local infiltration, IV Ketamine and propofol will be observed for satisfactory  anaesthesia. 

Success rate  will be  calculated accordingly. Hemodynamic parameters such as pulse, mean arterial pressure, SPo2, ECG. perioperative complications.

 
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