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CTRI Number  CTRI/2025/08/092888 [Registered on: 12/08/2025] Trial Registered Prospectively
Last Modified On: 08/08/2025
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   Comparing Two Intravenous Drugs to Prevent Surges in Blood pressure and Heart Rate During Skull Pin Placement in Brain Tumor Surgery. 
Scientific Title of Study   Intravenous Dexmedetomidine (1mcg/kg) versus Intravenous Magnesium Sulphate (50mg/kg)for attenuation of the Hemodynamic Stress Response During Skull Pin Insertion in Patients with Intracranial Neoplasms Undergoing Elective Craniotomy: A Prospective Randomized Comparative Study.  
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 Arjun Raveendran 
Designation  DNB Resident  
Affiliation  Sri Sathya Sai Institute of Higher Medical Sciences 
Address  Department of Anesthesia Sri Sathya Sai Institute of Higher Medical Sciences EPIP Area, Whitefield Bengaluru

Bangalore
KARNATAKA
560066
India 
Phone  8921731765  
Fax    
Email  arjunravi0@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr.Vrushali Choudhary 
Designation  Additional Senior Consultant  
Affiliation  Sri Sathya Sai Institute of Higher Medical Sciences 
Address  Department of Anesthesia Sri Sathya Sai Institute of Higher Medical Sciences EPIP Area, Whitefield Bengaluru

Bangalore
KARNATAKA
560066
India 
Phone  8308836873  
Fax    
Email  choudhary.vrushali@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr.Anitha Diwakar 
Designation  Senior Consultant 
Affiliation  Sri Sathya Sai Institute of Higher Medical Sciences 
Address  Department of Anesthesia Sri Sathya Sai Institute of Higher Medical Sciences EPIP Area, Whitefield Bengaluru

Bangalore
KARNATAKA
560066
India 
Phone  8861681405  
Fax    
Email  anitha.d@sssihms.org.in  
 
Source of Monetary or Material Support  
Sri Sathya Sai Institute of Higher Medical Sciences, EPIP Area, Whitefield, Bengaluru, India 560066 
 
Primary Sponsor  
Name  Sri Sathya Sai Institute of Higher Medical Sciences 
Address  Sri Sathya Sai Institute of Higher Medical Sciences, EPIP Area, Whitefield, Bengaluru, India 560066 
Type of Sponsor  Other [Trust Hospital] 
 
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 Arjun Raveendran  Sri Sathya Sai Institute of Higher Medical Sciences  F1201, First floor Sri Sathya Sai Institute of Higher Medical Sciences EPIP Area, Whitefield Bengaluru 560066
Bangalore
KARNATAKA 
08921731765

arjunravi0@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee Sri Sathya Sai Institute of Higher Medical Sciences, Whitefield.  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: D496||Neoplasm of unspecified behavior of brain,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Intravenous Dexmedetomidine 1 mcg/kg  Intravenous Dexmedetomidine 1 mcg/kg will be administered before pin insertion and hemodynamic parameters will be monitored 
Intervention  Intravenous Magnesium Sulphate 50 mg/kg  Intravenous Magnesium Sulphate 50 mg/kg will be administered before pin insertion and hemodynamic parameters will be monitored. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Patients belonging to ASA II aged between 18 to 60 years with intracranial neoplasms undergoing elective craniotomy. 
 
ExclusionCriteria 
Details  Patients with known history of allergy to the study drugs.
Patients in hypovolemia, heart blocks etc.
Patients undergoing emergency surgeries.
Patients with more than 20% drop in hemodynamic parameters after study drug administration
•Patients with hypermagnesemia.
 
 
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 
1.Measure and compare heart rate between two groups.
2.Measure and compare systolic blood pressure, diastolic blood pressure and mean arterial pressure between two groups. 
Before induction, five minutes after intubation, before pin insertion, at the time of pin insertion, one minute, five minutes, 10 minutes, 20 minutes, 30 minutes after pin insertion.  
 
Secondary Outcome  
Outcome  TimePoints 
1.To compare the total fentanyl requirement up to 30 minutes post pin insertion between two groups.
2. Compare the incidence of adverse effects related to study drugs in both groups. 
Up to 30 minutes post pin insertion. 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
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   Phase 4 
Date of First Enrollment (India)   20/08/2025 
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="8"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
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  

This randomized controlled trial aims to compare efficacy of intravenous dexmedetomidine and intravenous magnesium sulphate in attenuating the hemodynamic response to scalp pin insertion in patients with intracranial neoplasms undergoing elective craniotomy procedures. The study will include patients aged 18 to 60 years with an ASA physical status ii. A total of 60 patients will be randomly allocated in to two groups

Group D: intravenous dexmedetomidine 1 mcg/kg 

Group M: intravenous magnesium sulphate 50 mg/kg

Each group consist of 30 patients. Study drugs will be administered according to the assigned group.

Heart rate, systolic, diastolic and mean arterial pressures will be recorded at the following time points,

Pre induction,5 minutes after intubation, before and during pin insertion, 1 minute, 5 minutes, 10 minutes, 20minutes, 30 minutes following pin placement. These measurements will be taken by an anaesthesiologist who is blinded to the patients group allocation and total fentanyl requirement up to 30 minutes will also will be recorded. Magnesium level monitored in all patients pre operatively and after study drug administration

Statistical analysis: data will be entered in to Microsoft excel data sheet and will be analysed using IBM SPSS version 22 software (Armonk, Ny: IBM Corp) software. Normal distribution of data will be assessed with the Kolmogorov Smirnov test. Categorical data will be represented in the form of frequencies and proportions. Chi square test will be the test of significance. Continuous data will be represented as mean and standard deviation. Independent t test will the test of significance to identify the mean proportion between two groups. The Mann Whitney U test will used for the non-normality distributed data. P value <0.05 will be considered as statistically significant.

 

 
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