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CTRI Number  CTRI/2017/05/008467 [Registered on: 03/05/2017] Trial Registered Retrospectively
Last Modified On: 28/04/2017
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Multiple Arm Trial 
Public Title of Study   To find out whether sciatic nerve is blocked accidentally following pain relief nerve block for piles surgery 
Scientific Title of Study   randomised trial comparing the incidence of unintended sciatic nerve block following ultrasound guided pudendal nerve block with two different volumes of ropivacaine for hemorrhoidectomy 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Krishnagopal Vinod 
Designation  Associate professor 
Affiliation  Shri Sathya Sai Medical College and Research Institute 
Address  Faculty Room,Department of Anaesthesiology, Second Floor OT complex, Shri Sathya Sai Medical college and Research Institute Ammapettai,Sembakkam Post,Chengalpattu Taluk,Kancheepuram District
Department of Anaesthesiology, Shri Sathya Sai Medical college and Research Institute,Tiruporur Guduvancherry road, Ammapettai,Sembakkam Post,Chengalpattu Taluk.
Kancheepuram
TAMIL NADU
603108
India 
Phone  04427440700  
Fax    
Email  vinodkrishnagopal@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Krishnagopal Vinod 
Designation  Associate professor 
Affiliation  Shri Sathya Sai Medical College and Research Institute 
Address  Faculty Room,Second Floor OT Complex,Department of Anaesthesiology, Shri Sathya Sai Medical college and Research Institute Ammapettai,Sembakkam Post,Chengalpattu Taluk,Kancheepuram District
Department of Anaesthesiology, Shri Sathya Sai Medical college and Research Institute,Tiruporur Guduvancherry road, Ammapettai,Sembakkam Post,Chengalpattu Taluk.
Kancheepuram
TAMIL NADU
603108
India 
Phone  04427440700  
Fax    
Email  vinodkrishnagopal@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Krishnagopal Vinod 
Designation  Associate professor 
Affiliation  Shri Sathya Sai Medical College and Research Institute 
Address  Faculty Room,Second Floor OT complex,Department of Anaesthesiology, Shri Sathya Sai Medical College and Research Institute Ammapettai,Sembakkam Post,Chengalpattu Taluk,Kancheepuram District
Department of Anaesthesiology, Shri Sathya Sai Medical college and Research Institute,Tiruporur Guduvancherry, Ammapettai,Sembakkam Post,Chengalpattu Taluk.
Kancheepuram
TAMIL NADU
603108
India 
Phone  04427440700  
Fax    
Email  vinodkrishnagopal@gmail.com  
 
Source of Monetary or Material Support  
Shri Sathya Sai Medical College and Research Institute,Tiruporur Guduvanchery Road,Ammapettai,Sembakkam Post-603108,Chengalpattu Taluk,Kancheepuram 
 
Primary Sponsor  
Name  Shri Sathya Sai Medical College and Research Institute 
Address  Tiruporur Guduvanchery road,Ammapettai,Kancheepuram 
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 
Krishnagopal Vinod  Shri Sathya Sai medical college and research institute  Department of Anaesthesiology, Operation Theatre complex
Kancheepuram
TAMIL NADU 
04427440700

vinodkrishnagopal@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
shri sathya sai medical college and research institute  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  patients sufferring from hemorrhoids,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Pudendal nerve block under ultrasound guidance  Perinueral injection given in the interligamentous plane blocking both the right and left pudendal nerve 
Comparator Agent  Two different volumes of local anaesthetic Ropivacaine  Group I would recieve 10ml of 0.25% of Ropivcaine and Group II would recieve 5ml of 0.25% of Ropivacaine each side 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1) Patients aged between 18 to 60 years posted for elective hemorrhoidectomy .
2) Patients belonging to ASA physical status I and II.
2) Willingness to participate in the study.
 
 
ExclusionCriteria 
Details  1) ASA III and above.
2) Psychiatric illness.
3) Patients on anticoagulants .
4) Any neuropathic illness 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   On-site computer system 
Blinding/Masking   Participant, Investigator and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
Compare the Incidence of unintended sciatic nerve block with two different volumes of ropivacaine  1)Spread of drug to the sciatic nerve confirmed with ultrasound 2)Signs of motor or sensory involvement in the ditribution of sciatic nerve in the first 24 hrs after surgery 
 
Secondary Outcome  
Outcome  TimePoints 
1)Time of block would be taken as time zero,time of first analgesic requirement would be calculated in minutes from this point
2)Total demand of analgesics in 24 hours would be noted
3)The quality of pain relief would be assessed by NPRS numeric pain rating scale
4)Patients satisfaction was assessed by a three point scale excellent, satisfactory and unsatisfactory 
1)Time of block would be taken as time zero,time of first analgesic requirement would be calculated in minutes from this point
2)Total demand of analgesics in 24 hours would be noted
3)The quality of pain relief would be assessed by NPRS numeric pain rating scale
4)Patients satisfaction was assessed by a three point scale excellent, satisfactory and unsatisfactory 
 
Target Sample Size   Total Sample Size="30"
Sample Size from India="30" 
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)   13/02/2017 
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="0"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Open to Recruitment 
Publication Details   None Yet 
Individual Participant Data (IPD) Sharing Statement

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

Brief Summary   30 patients undergoing elective hemorrhoidectomy would be dived randomly divided into to two groups.Written informed consent would be obtained from the patient.All the patients would be fasted pre operatively for 6 hours.On the day of surgery ,the motor power  and sensation of the sciatic nerve would be noted.An intravenous cannula would be started and the patient would be loaded with 10ml/kg RL.The patients vitals would be monitored and the patient would be place in the prone position.For patient belonging to group I ,the pelvis would be scanned with a 3-6 mega hertz ultrasound probe starting from the Posterior superior illiac spine and advanced down to identify the Greater sciatic foraman and the Piriformis.Once when the piriformis is identified then the probe is still moved caudally until the piriformis disappears and the sacrospinous and the sacrotuberous ligament is noted.The probe is adjusted such that the sciatic nerve is visualised lateral to the ischial spine and the pudendal nerve and artery is visualised medial to the ischial spine in the interligamentous plane.the neerdle is advanced under real time ultrasound guidance till the tip reaches the inter ligamentous plane medial to the pudendal artery.Once when the position is confirmed 10 ml of 0.25% of ropivacaine is injected incrementally after repeated aspiration for blood and the spread of injectate to the sciatic nerve would be noted.The same procedure would be repeated in the opposite side.For patients belonging to group II the same procedure would be repeated but the volume of 0.25% ropivacaine injected would be 5ml on each side.Following the block the patient would be turned to supine position and general anaesthesia induced and appropriate sized LMA would be inserted and the surgical procedure would be completed.After the procedure the patient would be reversed from general anaesthesia and the outcomes would be assessed. 
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