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CTRI Number  CTRI/2025/05/087274 [Registered on: 21/05/2025] Trial Registered Prospectively
Last Modified On: 27/05/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   A Comparative Analysis of 2 mcg/kg versus 4 mcg/kg Fentanyl in Attenuating the Hemodynamic Stress Response to Laryngoscopy and Intubation During Intracranial Surgery 
Scientific Title of Study   A Randomized Comparative Study of Fentanyl 2 mcg/kg versus 4 mcg/kg in Attenuating the Hemodynamic Stress Response during Laryngoscopy and Endotracheal Intubation in Patients undergoing Intracranial Surgery 
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 Shobha purohit  
Designation  Senior professor  
Affiliation  SMS medical college and hospital 
Address  Department of Anesthesiology NSOT SMS MEDICAL COLLEGE AND HOSPITAL JAIPUR RAJASTHAN Jaipur INDIA

Jaipur
RAJASTHAN
302004
India 
Phone  7737050823  
Fax    
Email  purohit.shobha@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Shobha purohit  
Designation  Senior professor  
Affiliation  SMS medical college and hospital 
Address  Department of Anesthesiology NSOT SMS MEDICAL COLLEGE AND HOSPITAL JAIPUR RAJASTHAN Jaipur INDIA

Jaipur
RAJASTHAN
302004
India 
Phone  7737050823  
Fax    
Email  purohit.shobha@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Umrao singh  
Designation  resident doctor  
Affiliation  SMS medical college and hospital 
Address  Department of Anesthesiology NSOT SMS MEDICAL COLLEGE AND HOSPITAL JAIPUR RAJASTHAN Jaipur INDIA

Jaipur
RAJASTHAN
302004
India 
Phone  6375167782  
Fax    
Email  umraogurjar92@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesiology SMS MEDICAL COLLEGE AND HOSPITAL JAIPUR RAJASTHAN INDIA -302004 
 
Primary Sponsor  
Name  SMS MEDICAL COLLEGE AND HOSPITAL 
Address  Department of Anesthesiology SMS MEDICAL COLLEGE AND HOSPITAL JAIPUR RAJASTHAN INDIA -302004 
Type of Sponsor  Government medical college 
 
Details of Secondary Sponsor  
Name  Address 
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 Shobha Purohit   SMS medical college and hospital  Department of Anesthesiology NSOT SMS MEDICAL COLLEGE AND HOSPITAL JAIPUR RAJASTHAN Jaipur INDIA
Jaipur
RAJASTHAN 
7737050823

purohit.shobha@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
SMS medical college and attached hospital jaipur  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, (2) ICD-10 Condition: G998||Other specified disorders of nervous system in diseases classified elsewhere,  
 
Intervention / Comparator Agent
Modification(s)  
Type  Name  Details 
Intervention  Intravenous Fentanyl at 2 mcg per kg   Group A receives IV fentanyl at 2 mcg per kg Fentanyl 2 mcg per kg administered before induction of anaesthesia Hemodynamic parameters (HR SBP DBP MAP) are measured at baseline during laryngoscopy, immediately post-intubation and at set intervals post-intubation at 2 min 4 min 6min 15 minutes  
Comparator Agent  Intravenous Fentanyl at 4 mcg per kg   Group B receives IV fentanyl at 4 mcg per kg Intravenous Fentanyl 4 mcg per kg administered before induction of anaesthesia Hemodynamic parameters (HR SBP DBP MAP) are measured at baseline during laryngoscopy, immediately post-intubation and at set intervals post-intubation at 2 min 4 min 6min 15 minutes  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  ASA physical status class 1 and 2 posted for elective intracranial surgery
Patient who will give informed written consent
Body weight 40 to 70 kg range  
 
ExclusionCriteria 
Details  Patients having severe systemic illness and bleeding disorders,
Pregnant and lactating female
Patients allergic to study drugs
Anticipated difficult airways
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
Mean systolic BP
Mean diastolic BP
Mean of mean BP
Mean heart rate
Proportion of cases having adverse effects if any in both the groups 
0 MIKN 2 MIN 4 MIN 6 MIN 8 MIN 10 MIN 15 MIN  
 
Secondary Outcome  
Outcome  TimePoints 
To assess and compare the proportion of patients developing intraoperative complications (hypotension, bradycardia tachycardia chest rigidity)

To assess and compare total dose of Propofol in mg required for induction of anaesthesia in both the groups
 
0 MIN 2 MIN 4 MIN 6 MIN 8 MIN 10 MIN 15 MIN  
 
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)   04/06/2025 
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="0"
Months="2"
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  
Laryngoscopy and tracheal intubation are known to cause significant sympathetic stimulation, resulting in transient increases in heart rate and blood pressure. These hemodynamic responses can be particularly dangerous in patients undergoing intracranial surgery due to the risk of elevated intracranial pressure and compromised cerebral perfusion. Fentanyl, a potent opioid analgesic, is commonly used to blunt these responses.

This study aims to compare the efficacy of two different fentanyl dosing regimens—2 mcg/kg versus 4 mcg/kg—in attenuating the hemodynamic changes associated with direct laryngoscopy and intubation in patients undergoing intracranial surgery. The primary outcomes include changes in heart rate, systolic and diastolic blood pressure, and mean arterial pressure during and after laryngoscopy. The study also evaluates the safety profile of each dose in this sensitive patient population.
 
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