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CTRI Number  CTRI/2023/04/051720 [Registered on: 18/04/2023] Trial Registered Prospectively
Last Modified On: 09/05/2023
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   To compare pain relief after blocking nerves of legs by 2 types of nerve block  
Scientific Title of Study   Comparative evaluation of Sciatic Obturator Femoral Nerve Block Technique (S.O.F.T Block) versus Central neuraxial blockade for anaesthesia and post operative analgesia for below knee orthopaedic trauma surgeries  
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
U1111-1290-5551  UTN 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Karanbir Singh 
Designation  Post Graduate Resident Doctor 
Affiliation  Teerthanker Mahaveer Medical College & RC 
Address  Room No 204 Second floor Department of Anesthesia National Highway 24 Delhi Rd Bagadpur

Moradabad
UTTAR PRADESH
244001
India 
Phone  7000486410  
Fax    
Email  karankataria36@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Karanbir Singh 
Designation  Post Graduate Resident Doctor 
Affiliation  Teerthanker Mahaveer Medical College & RC 
Address  Room No 204 Second floor Department of Anesthesia National Highway 24 Delhi Rd Bagadpur

Moradabad
UTTAR PRADESH
244001
India 
Phone  7000486410  
Fax    
Email  karankataria36@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Payal Jain 
Designation  Associate Professor 
Affiliation  Teerthanker Mahaveer Medical College & RC 
Address  Room No 204 Second floor Department of Anesthesia National Highway 24 Delhi Rd Bagadpur

Moradabad
UTTAR PRADESH
244001
India 
Phone  9855567933  
Fax    
Email  payalravi1408@gmail.com  
 
Source of Monetary or Material Support  
Teerthanker Mahaveer Medical College & Research Centre Moradabad Uttar Pradesh 
 
Primary Sponsor  
Name  Teerthanker Mahaveer Medical College & Research Centre Moradabad Uttar Pradesh 
Address  Department of Anaesthesia , National Highway 24, Delhi Rd, Bagadpur Uttar Pradesh 
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 Karanbir Singh  Teerthanker Mahaveer Medical College & Research Centre  Department of Anesthesia , Teerthanker Mahaveer Medical College & Research Centre , National Highway 24 Delhi Road Bagadpur
Moradabad
UTTAR PRADESH 
7000486410

karankataria36@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethical Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied
Modification(s)  
Health Type  Condition 
Patients  (1) ICD-10 Condition: S829||Unspecified fracture of lower leg, (2) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent
Modification(s)  
Type  Name  Details 
Intervention  Sciatic Obturator Femoral Nerve Block Technique (S.O.F.T Block)  S.O.F.T Block (Sciatic Obturator Femoral Nerve) Ultrasound Guided. To block the Femoral nerve, 15mL of bupivacaine 0.25% will be injected. To block the obturator nerve, 10mL of bupivacaine 0.25% will be injected . To block the sciatic nerve, 20mL of bupivacaine 0.25% will be injected .Duration to perform S.O.F.T Block is 15 to 20 mins 
Comparator Agent  Spinal Anesthesia  Spinal Anesthesia will be given with hyperbaric bupivacaine 0.5% (15 mg).Duration to perform Spinal anesthesia is 5 to 7 mins. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Informed consent .
ASA physical status I-II
Body mass index 18.5-24.9 kg/m2 
 
ExclusionCriteria 
Details  Patients undergoing bilateral surgery.
Contraindications to regional anesthesia.
Patients with unstable vital signs and patients with head or chest trauma. 
 
Method of Generating Random Sequence   Coin toss, Lottery, toss of dice, shuffling cards etc 
Method of Concealment   Case Record Numbers 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
1 Visual Analogue Score
2 Hemodynamics
3 Sensory characteristics
4 Motor characteristics 
VAS Score 0,15, 30 minutes
1, 3, 6, 12, 18 hours
Hemodynamics monitored 2, 4, 6, 8, 10, 12, 15,
20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80,
85, 90 minutes, till completion of surgery.
Sensory characteristics every 2 minutes interval
till the establishment of the block and every 5
mins till surgery.
Motor characteristics at every 2 mins till the
achievement of Bromage score 3
,then at the end of surgery and then at 15-min
intervals till( Bromage Score-0) 
 
Secondary Outcome  
Outcome  TimePoints 
Nausea, vomiting , rash , pruritis , seizures and
other complications. 
for first 24 hrs 
 
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   N/A 
Date of First Enrollment (India)   28/04/2023 
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="2"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details   nil 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary  
After approval from institutional ethical committee, patients will be identified undergoing below knee
orthopedic trauma surgeries and participant will be recruited as per inclusion and exclusion criteria.

Randomization will be done using chit & box method & two groups both including 35 patients will be
created (Group-T & Group-S)

1. Group T- Central Neuraxial Block with hyperbaric bupivacaine 0.5% (15 mg).

2. Group S- S.O.F.T Block guided by Ultrasound .
To block the Femoral nerve, 15mL of bupivacaine 0.25% will be injected.
To block the obturator nerve, 10mL of bupivacaine 0.25% will be injected .
To block the sciatic nerve, 20mL of bupivacaine 0.25% will be injected .
Patients will be preloaded with RL solution at the rate of 10 ml/kg within 15 to 20 mins before
surgery.
After successfully performing the block in both the groups, Hemodynamics (HR, RR, SBP, DBP,
MAP, SP02) vitals will be monitored every 2 mins up to 15mins and thereafter every 5 mins until the
completion of surgery.
Post OP vitals will be monitored at 1, 2, 6, 12, 24, 48 hrs. Sensory block will be tested every 2
minutes interval till the establishment of the block and every 5 mins during the surgery.
In the recovery room , testing has to be conducted every 10 min until the point of two segment
regression of block. Duration of analgesia will be assessed from the onset of sensory block to first
request for rescue analgesia (Visual analog score >4). Pain will be assessed at 1, 3, 6, 12, 18, 24
hrs.
Motor block will be assessed using a modified Bromage scale at every 2 mins till the achievement
of Bromage score 3
Motor block will be assessed and graded at the end of surgery and then at 15-min intervals using
the modified Bromage scale, until full return of lower extremity motor function (Score-0) will be
noted and the patients will be given 15mg/kg Paracetamol for post operative pain, Injection
Tramadol 2 mg/kg IV will be given as rescue analgesia (if VAS >4).
The patients will be observed for first 24 hours for nausea, vomiting, rash, pruritis, seizures and
other complications.

 
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