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CTRI Number  CTRI/2025/05/087154 [Registered on: 20/05/2025] Trial Registered Prospectively
Last Modified On: 16/05/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   A study to compare how well low doses of ketamine or lignocaine work to prevent pain when propofol is injected into a vein. The study is done in a fair and unbiased way, where neither the patients nor the researchers know who gets which medicine 
Scientific Title of Study   A Randomised Double-Blind Controlled Study to Evaluate the Efficacy of Low-Dose Intravenous Ketamine Versus Intravenous Lignocaine for Prevention of Pain Associated With Intravenous Injection of Propofol 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Veena Patodi 
Designation  Senior Professor 
Affiliation  Jawahar lal nehru medical college  
Address  Department of Anaesthesiology, new OT,1st floor JLN medical hospital kalabagh,Ajmer Rajastan Ajmer RAJASTHAN

Ajmer
RAJASTHAN
305001
India 
Phone  9414008276  
Fax    
Email  veenapatodi@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Veena Patodi 
Designation  Senior Professor 
Affiliation  Jawahar lal nehru medical college  
Address  Department of Anaesthesiology, new OT,1st floor JLN medical hospital kalabagh,Ajmer Rajastan Ajmer RAJASTHAN

Ajmer
RAJASTHAN
305001
India 
Phone  9414008276  
Fax    
Email  veenapatodi@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Veena Patodi 
Designation  Senior Professor 
Affiliation  Jawahar lal nehru medical college  
Address  Department of Anaesthesiology, new OT,1st floor JLN medical hospital kalabagh,Ajmer Rajastan Ajmer RAJASTHAN

Ajmer
RAJASTHAN
305001
India 
Phone  9414008276  
Fax    
Email  veenapatodi@gmail.com  
 
Source of Monetary or Material Support  
Department of anaesthesiology JLN medical college and hospitals, Kalabhag road, Ajmer Rajastan 305001 
 
Primary Sponsor  
Name  JLN medical college 
Address  kalabagh,Ajmer,Rajasthan,India pin code- 305001 
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 
Dr Mohit Gurjar  JLN medical college and hospital   Department of Anaesthesiology, new OT 1st floor, JLN hospital kalabagh Ajmer RAJASTHAN
Ajmer
RAJASTHAN 
7737800956

drmohitgurjar@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
institutional ethical committee Jawaharlal nehru medical college and hospitals ajmer   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  GROUP A - inj. Ketamine  inj. ketamine 0.2 mg/kg iv 
Comparator Agent  GROUP B- Inj. Lidocaine  Inj. Lidocaine 0.5mg/kg iv 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1. ASA grade I, II
2. Elective surgical procedure under general anesthesia
3. Patients willing to give written informed consent. 
 
ExclusionCriteria 
Details  1. Patients having known allergy to propofol and anesthetic agents will be used in
study.
2. Hemodynamically unstable patient, Pregnant women, morbidly obese, history of
neurological & psychological disorders, with acute or chronic pain syndromes,
patients with difficulty in communication and patients who had received any
sedatives and analgesic medications before surgery
3.Patients who are unwilling to participate in the study. 
 
Method of Generating Random Sequence   Random Number Table 
Method of Concealment   Case Record Numbers 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
1. Difference in number of cases who experience pain on injection in both groups.
 
To assess and compare prevention of pain associated with iv injection of propofol in both groups at different time intervals. 
 
Secondary Outcome  
Outcome  TimePoints 
1. Difference in hemodynamic variations from base line at different time interval in
both groups.
2. Difference in number of cases who has side effect in both groups. 
Baseline 
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
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)   27/05/2025 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  27/05/2025 
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   Propofol (2,6-diisopropylphenol) is currently the most widely used intravenous anesthetic agent due to its favorable pharmacological profile, including smooth induction, effective sedation, rapid recovery, and anti-emetic properties compared to agents such as thiopental
However, its use is frequently accompanied by a significant drawback: pain on injection, which is a common and distressing issue for patients.
The pain associated with propofol injection is believed to be primarily due to the concentration of free propofol in the aqueous phase of the emulsion .As a phenol derivative, propofol can irritate the skin, mucous membranes, and venous intima. Injection pain may be immediate, due to direct irritation of afferent nerve endings, or delayed.
Various strategies have been proposed to mitigate this pain, including altering the temperature or concentration of propofol, using larger veins for injection, and pre-treatment with intravenous agents such as lidocaine, ondansetron, metoclopramide, opioids, magnesium, or thiopental, with or without a tourniquet.
Among these, lidocaine pre-treatment remains the most commonly used method to reduce propofol injection pain.However, lidocaine does not entirely eliminate the discomfort.
Ketamine, known for its potent analgesic and local anesthetic effects, has also been explored as a potential alternative.As an NMDA receptor antagonist, ketamine may reduce pain through peripheral mechanisms and central modulation of pain pathways 
 Furthermore, ketamine’s sympathetic stimulatory effects can help stabilize hemodynamics following propofol administration, a potential added benefit over lidocaine
Variability in pain perception.
This study compares lignocaine and ketamine in prevention of pain associated with iv injection of propofol.
 
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