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CTRI Number  CTRI/2025/03/083669 [Registered on: 28/03/2025] Trial Registered Prospectively
Last Modified On: 26/03/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   A Comparative Study Of Dexmedetomidine And Labetalol For Attenuation of Haemodynamic Stress Response to Laryngoscopy and Intubation 
Scientific Title of Study   A Comparative Study Of Dexmedetomidine And Labetalol For Attenuation of Haemodynamic Stress Response to Laryngoscopy and Intubation: A Randomized Clinical Trial 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Pranesh Gurung 
Designation  Post Graduate Trainee 
Affiliation  Regional Institute Of Medical Sciences Imphal Manipur  
Address  Department of Anaesthesiology Regional Institute Of Medical Sciences Imphal Imphal West MANIPUR 795004

Imphal West
MANIPUR
795004
India 
Phone  8348580211  
Fax    
Email  Pranesh.grng@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  N Anita Devi 
Designation  Professor 
Affiliation  Regional Institute Of Medical Sciences Imphal 
Address  Department of Anaesthesiology Regional Institute Of Medical Sciences

Imphal West
MANIPUR
795004
India 
Phone  8787458045  
Fax    
Email  dranitadevin@gmail.com  
 
Details of Contact Person
Public Query
 
Name  N Anita Devi 
Designation  Professor 
Affiliation  Regional Institute Of Medical Sciences Imphal 
Address  Department of Anaesthesiology Regional Institute Of Medical Sciences

Imphal West
MANIPUR
795004
India 
Phone  8787458045  
Fax    
Email  dranitadevin@gmail.com  
 
Source of Monetary or Material Support  
Department Of Anaesthesiology Regional Institute Of Medical Sciences Imphal West Manipur India PIN-795004 
 
Primary Sponsor  
Name  Pranesh Gurung  
Address  Department Of Anaesthesiology Regional Institute Of Medical Sciences Imphal Manipur 
Type of Sponsor  Other [Post Graduate Trainee] 
 
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 Pranesh Gurung   Regional Institute Of Medical Sciences   Operation Theatre complex. Department of Anaesthesiology Regional Institute Of Medical Sciences Imphal
Imphal West
MANIPUR 
8348580211

pranesh.grng@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
RESEARCH ETHICS BOARD RIMS  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  Inj Dexmedetomidine 1mcg/kg  Study participants will receive inj Dexmedetomidine 1mcg/kg in 10ml normal saline i.v over 10 mins, 5 minutes before induction of anaesthesia. 
Comparator Agent  Inj labetalol 0.5mg/kg  Study participants will receive Inj Labetalol 0.5mg/kg in 10 ml normal saline i.v over 10 mins before induction of anaesthesia. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Patient of either sex
Patient with ASA physical grade 1 and 2 
 
ExclusionCriteria 
Details  Patient refusal
Difficult airway
Uncontrolled Hypertension
Uncontrolled Diabetes Mellitus
Ischemic heart disease
Severe Renal disease
Cerebrovascular disease
Patient on beta blockers, alpha blockers
Bronchial Asthma
Allergy to study drugs 
 
Method of Generating Random Sequence   Permuted block randomization, fixed 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Haemodynamic changes ( hypertension, tachycardia, hypotension, bradycardia) during laryngoscopy and intubation.  Haemodynamic changes ( hypertension, tachycardia, hypotension, bradycardia) before starting infusion, 1 min after infusion, 1 min after induction, 1, 3 5, 15, 30 mins after intubation. 
 
Secondary Outcome  
Outcome  TimePoints 
Haemodynamic changes ( hypotension, bradycardia) during laryngoscopy and intubation.  Haemodynamic changes ( hypotension, bradycardia) before starting infusion, 1 min after infusion, 1 min after induction, 1, 3 5, 15, 30 mins after intubation. 
 
Target Sample Size   Total Sample Size="102"
Sample Size from India="102" 
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)   10/04/2025 
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 - YES
  1. What data in particular will be shared?
    Response - All of the individual participant data collected during the trial, after de-identification.

  2. What additional supporting information will be shared?
    Response - Informed Consent Form

  3. Who will be able to view these files?
    Response - Researchers whose proposed use of the data has been approved by an independent review committee identified for this purpose.

  4. For what types of analyses will this data be available?
    Response - For individual participant data meta-analysis.

  5. By what mechanism will data be made available?
    Response - Proposals should be directed to [Pranesh.grng@gmail.com].

  6. For how long will this data be available start date provided 06-02-2025 and end date provided 31-12-2025?
    Response - Immediately following publication. No end date.

  7. Any URL or additional information regarding plan/policy for sharing IPD? 
    Additional Information - Nil
Brief Summary  

Laryngoscopy during endotracheal intubation produce mechanical and chemical stimulus that increase somatovisecral reflex caused by stimulation of epipharynxand laryngopharynx producing tachycardia and hypertension which may produce deleterious effects on comorbid patients. Hence, it is important to find ways to attenuate those responses during laryngoscopy and intubation.

A comparative randomized clinical trial will be carried out to evaluate the efficacy of dexmedetomidine and labetalol in attenuating hemodynamic responses during laryngoscopy and intubation. This study will involve 102 American Society of Anaesthesiologist grade I and II patients aged 18to 60, of both sexes undergoing elective surgeries under general anaesthesia.

Patients will be randomly assigned to receive either dexmedetomidine (Group A) 1 mcg/kg in 10ml normal saline (n=51) or labetalol (Group B) 0.5 mg/kg in 10ml normal saline(n=51) intravenously 5 minutes before induction of anaesthesia. Haemodynamic parameters will be monitored 1 min after infusion of study drug followed by 1 min after induction and 1, 3, 5, 10 and 15 minutes after intubation.

The findings and observations made during the study will be tabulated, graphically represented.The inference drawn from this comparative study will provide insights into the effectiveness of dexmedetomidine compared to labetalol in attenuating haemodynamic responses during laryngoscopy and intubation.

 
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