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CTRI Number  CTRI/2026/04/108570 [Registered on: 16/04/2026] Trial Registered Prospectively
Last Modified On: 15/04/2026
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Multiple Arm Trial 
Public Title of Study   Comparative Evaluation of Dexmedetomidine, Ketamine and Magnesium Sulphate for treatment of Perioperative Shivering after Spinal Anaesthesia 
Scientific Title of Study   Comparison of Dexmedetomidine, Ketamine and Magnesium Sulphate for treatment of Perioperative Shivering after Spinal Anaesthesia 
Trial Acronym  NIL 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Devam Himanshu Trivedi 
Designation  Junior Resident 
Affiliation  JSS Academy Of Higher Education And Reasearch 
Address  Department Of Anesthesiology JSS Hospital, Mysore, Karnataka

Mysore
KARNATAKA
570004
India 
Phone  7069010268  
Fax    
Email  devamdev@yahoo.com  
 
Details of Contact Person
Scientific Query
 
Name  Devam Himanshu Trivedi 
Designation  Junior Resident 
Affiliation  JSS Academy Of Higher Education And Reasearch 
Address  Department Of Anesthesiology JSS Hospital, Mysore, Karnataka

Mysore
KARNATAKA
570004
India 
Phone  7069010268  
Fax    
Email  devamdev@yahoo.com  
 
Details of Contact Person
Public Query
 
Name  Dr Archana K N 
Designation  Professor  
Affiliation  JSS Academy Of Higher Education and Research 
Address  Department Of Anaesthesiology, JSS Hospital, Mysore, Karnataka

Mysore
KARNATAKA
570004
India 
Phone  9845140637  
Fax    
Email  knarchana@jssuni.edu.in  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  JSS Academy Of Higher Education And Research 
Address  JSS Medical College And Hospital, Mysore, Karnataka 570015 
Type of Sponsor  Private 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 Devam Himanshu Trivedi  JSS Medical College And Hospital   Patients Undergoing Spinal Anaesthesia in OT Complex JSS Hospital MG Road, Agrahara, Mysore, Karnataka
Mysore
KARNATAKA 
7069010268

devamdev@yahoo.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICS COMMITTEE   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  DEXMEDETOMIDINE IV  Inj DEXMEDETOMIDINE 0.5 MCG/KG IV over 10 minutes  
Intervention  KETAMINE IV  Inj KETAMINE 0.5 MG/KG IV bolus 
Intervention  MAGNESIUM SULPHATE IV  Inj MAGNESIUM SULPHATE 50 MG/KG IV over 10 minutes  
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Patients of age 18 to 60 years of ASA grade 1, 2 and 3 undergoing elective surgery under spinal anaesthesia with grade 2 and above shivering  
 
ExclusionCriteria 
Details  1. Patients with ASA physical status above 3.
2. Patients allergic or contraindicated to study medication.
3. Patients with severe cardio pulmonary disease, renal or liver impairment, peri operative fever or hypothermia, history of seizure, massive blood transfusion and history of psychiatric illness. 
 
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 
To compare the efficacy of Dexmedetomidine, Ketamine, Magnesium Sulphate in the treatment of peri operative shivering subsequent to spinal Anesthesia   After study drug administration shivering grade will be assessed at 1, 3, 5 minutes and thereafter every 5 minutes till shivering resolves or 30 minutes has elapsed. 
 
Secondary Outcome  
Outcome  TimePoints 
1. To assess the hemodynamic parameters after giving the study drugs.
2. To compare side effects of the drugs including nausea, vomiting, hypotension, hypertension, bradycardia, tachycardia, sedation, respiratory depression, delirium, hypothermia. 
After administration of the study drug all secondary outcomes will be assessed at 1, 3, 5 minutes & thereafter every 5 minutes till 30 minutes. 
 
Target Sample Size   Total Sample Size="120"
Sample Size from India="120" 
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)   30/04/2026 
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="6"
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  

This study is a prospective double blind randomized clinical trial to compare dexmedetomidine ketamine and magnesium sulphate for the treatment of perioperative shivering following spinal anesthesia. Adult patients aged 18 to 60 years who develop grade 2 or 3 shivering after spinal anesthesia will be randomly allocated into three groups. Each group will receive a single intravenous bolus of either dexmedetomidine 0.5 microgram per kg ketamine 0.5 mg per kg or magnesium sulphate 50 mg per kg at the onset of shivering.

The time taken for reduction of shivering to grade 0 or 1 will be recorded. Patients will be monitored for heart rate mean arterial pressure oxygen saturation temperature and sedation score at regular intervals. Recurrence of shivering and adverse effects such as nausea vomiting hypotension bradycardia respiratory depression delirium and hypothermia will also be recorded.


 
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