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CTRI Number  CTRI/2013/11/004168 [Registered on: 22/11/2013] Trial Registered Retrospectively
Last Modified On: 17/11/2019
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 analgesic action of two doses of dexmedetomidine, when used in addition to bupivacaine, in femoral nerve block given to reduce post operative pain after total knee replacement surgery 
Scientific Title of Study   EFFECT OF DEXMEDETOMIDINE AS AN ADJUVANT TO BUPIVACAINE IN FEMORAL NERVE BLOCK FOR PERIOPERATIVE ANALGESIA IN PATIENTS UNDERGOING TOTAL KNEE REPLACEMENT ARTHROPLASTY UNDER SUBARACHNOID BLOCK - A DOSE RESPONSE STUDY 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Senthil Packiasabapathy 
Designation  junior resident (academic) 
Affiliation  All India Institute of Medical Sciences 
Address  Department of Anaesthesiology, 5th floor, Teaching block, All India Institute of Medical sciences, Ansari Nagar, New Delhi

South West
DELHI
110029
India 
Phone  9968889932  
Fax    
Email  ksenps@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Prof Lokesh Kashyap 
Designation  professor 
Affiliation  All India Institute of Medical Sciences 
Address  Room no.5018, 5th floor, Teaching block, All Inddia Institute of Medical sciences, Ansari Nagar, New Delhi

South West
DELHI
110029
India 
Phone  9868397821  
Fax    
Email  lokeshkashyap@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Prof Lokesh Kashyap 
Designation  professor 
Affiliation  All India Institute of Medical Sciences 
Address  Room no.5018, 5th floor, Teaching block, All Inddia Institute of Medical sciences, Ansari Nagar, New Delhi

South West
DELHI
110029
India 
Phone  9868397821  
Fax    
Email  lokeshkashyap@yahoo.com  
 
Source of Monetary or Material Support  
All India Institute of Medical Sciences 
 
Primary Sponsor  
Name  All India Institute of Medical Sciences 
Address  All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029 
Type of Sponsor  Research institution and hospital 
 
Details of Secondary Sponsor  
Name  Address 
All India Institute of Medical Sciences  All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Senthil Packia Sabapathy  All India Institute of Medical Sciences  Department of aneaesthesia, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029
South West
DELHI 
9968889932

ksenps@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institute ethics committee, ethics subcommittee, AIIMS  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Approved/Obtained 
 
Health Condition / Problems Studied
Modification(s)  
Health Type  Condition 
Patients  American Society of Anesthesiologists Physical status classes 1, 2, (1) ICD-10 Condition: M171||Unilateral primary osteoarthritisof knee,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  dexmedetomidine  Dexmedetomidine is used as an adjuvant to prolong the analgesic action of local anesthetic agent. In one group dose given is 1 microgram per kilogram bodyweight. In second group dose is 2 microgram per kilogram. It is given along with 20 mL of 0.25% bupivacaine in both the groups as a single injection femoral nerve block prior to the surgery.  
Intervention  femoral nerve block  nerve stimulator guided femoral nerve block is used for post operative analgesia in total knee replacement 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  75.00 Year(s)
Gender  Both 
Details  ASA 1, 2 patients undergoing unilateral primary total knee replacement arthroplasty 
 
ExclusionCriteria 
Details  ASA 3,4, bilateral, revision TKR,focal neurological deficits, pre existing peripheral neuropathy,uncontrolled diabetes mellitus,coagulation disorders 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Quality of post operative analgesia as assessed by,
1) VAS (0-10 scale; 0-no pain; 10-worst possible pain)
• pain at rest at 0, 4, 8, 12, 24, 48 hours after surgery
• pain at motion (knee flexion) at 12, 24, 48 hours after surgery
2) Post operative opioid consumption: Total dose of PCA morphine consumed, dose of rescue analgesia used.
3) Duration of analgesia: Time to first use of patient controlled analgesia
 
Quality of post operative analgesia as assessed by,
1) VAS (0-10 scale; 0-no pain; 10-worst possible pain)
• pain at rest at 0, 4, 8, 12, 24, 48 hours after surgery
• pain at motion (knee flexion) at 12, 24, 48 hours after surgery
2) Post operative opioid consumption: Total dose of PCA morphine consumed, dose of rescue analgesia used.
3) Duration of analgesia: Time to first use of patient controlled analgesia
 
 
Secondary Outcome  
Outcome  TimePoints 
Adverse effects of dexmedetomidine in peripheral nerve block such as nausea, vomiting, pruritus, sedation, hypotension, bradycardia, neuropathy in the perioperative period will be recorded  Adverse effects of dexmedetomidine in peripheral nerve block such as nausea, vomiting, pruritus, sedation, hypotension, bradycardia, neuropathy in the perioperative period will be recorded 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
Final Enrollment numbers achieved (Total)= "60"
Final Enrollment numbers achieved (India)="60" 
Phase of Trial   N/A 
Date of First Enrollment (India)   01/08/2013 
Date of Study Completion (India) 31/12/2014 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) 31/12/2014 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   not published 
Individual Participant Data (IPD) Sharing Statement

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

Brief Summary   Total knee replacement is a very painful procedure, post operative pain impairs early patient mobilization which is the key to the success of the procedure. Dexmedetomidine when used as an adjuvant to local anesthetic agent in peripheral nerve blocks is found to increase duration of the block, in various studies. This adjuvant property of dexmedetomidine is studied in this thesis to provide good quality post operative analgesia in patients undergoing TKR.   This study is a dose comparison study which includes three groups, one control group receiving plain bupivacaine in femoral nerve block, second group receiving 1microgram/kilogram of dexmedetomidine along with bupivacaine in the block. The third group receiving 2microgram/kilogram of dexmedetomidine along with bupivacaine in the block. The post operative pain scores, opioid consumption as well as adverse effects are compared. The data will be statistically analyzed.This is a randomized, controlled, double blinded study. The sample size is sixty. 
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