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CTRI Number  CTRI/2025/06/089294 [Registered on: 23/06/2025] Trial Registered Prospectively
Last Modified On: 20/06/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparing Two Medications (Dexmedetomidine and Remifentanil) to Safely Lower Blood Pressure During Spine Surgery in People with managed High Blood Pressure 
Scientific Title of Study   Comparative Study between dexmedetomidine infusion and remifentanil infusion for hypotensive anesthesia in controlled hypertensive patients undergoing spine surgeries  
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.Kamma Manisha chowdary 
Designation  PG resident  
Affiliation  IMS&SUM hospital  
Address  Department of anesthesiology, IMS&SUM hospital, Siksha O Anusandhan University, Bhubaneswar, Khorda, Odisha

Khordha
ORISSA
751003
India 
Phone  9441813236  
Fax    
Email  manishachowdary6699@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Swarna banerjee  
Designation  Professor  
Affiliation  IMS&SUM hospital  
Address  Department of anesthesiology, IMS&SUM hospital, Siksha O Anusandhan University, Bhubaneswar, Khorda, Odisha

Khordha
ORISSA
751003
India 
Phone  9437341397  
Fax    
Email  dr.swarnabanerjee@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Kamma Manisha chowdary  
Designation  PG Resident  
Affiliation  IMS&SUM hospital  
Address  Department of anesthesiology, IMS&SUM hospital, Siksha O Anusandhan University, Bhubaneswar, Khorda, Odisha

Khordha
ORISSA
751003
India 
Phone  9441813236  
Fax    
Email  manishachowdary6699@gmail.comm  
 
Source of Monetary or Material Support  
IMS&SUM hospital, Siksha O Anusandhan University, Bhubaneswar, Khorda, Orissa ,India ,751003 
 
Primary Sponsor  
Name  IMS&SUM hospital  
Address  Kalinga Nagar, Bhubaneswar, Odisha, 751003 
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 
DrKamma Manisha chowdary   IMS&SUM hospital   Department of anesthesiology, neurosurgery OT,IMS&SUM hospital, Siksha O Anusandhan University, Kalinga Nagar, Bhubaneswar, Odisha, India
Khordha
ORISSA 
9441813236

manishachowdary6699@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
INSTITUTIONAL ETHICS COMMITTEE, IMS&SUM HOSPITAL   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  Patients in group Dex will be administered a loading dose of 0.3-1mcg/kg for 10min followed by continuous infusion of dexmedetomidine @ 0.3-0.7mcg/kg/hr till the end of surgery  
Comparator Agent  REMIFENTANIL   Patients in group Rem will be receiving remifentanil loading dose of 1mcg/kg for 2min followed by infusion @ 0.1-1mcg/kg/hr till the end of surgery  
 
Inclusion Criteria  
Age From  20.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  1.Patients posted for elective spine surgeries with controlled hypertension
2.Age group of 20 to 65 years
3.Patients belonging to ASA class-2
4.Patients who have given informed consent to participate in the study 
 
ExclusionCriteria 
Details  1.Patient not giving consent
2.known allergy to either drug
3.Opioid dependence
4.Any coagulation disorders
5.Patient taking anticoagulant drugs
6.Re-operative surgery
7.Uncontrolled hypertension & diabetes
8.Patients with significant cardiovascular or respiratory diseases
9.Patients with neurological or psychiatric disorders affecting pain perception reporting
 
 
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 versus remifentanil in achieving controlled hypotension during spine surgeries   Baseline, 10 minutes, 30 minutes, 60 minutes, at extubation, 30 minutes after extubation, 60 minutes after extubation, 90 minutes after extubation  
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate intraoperative blood loss, hemodynamic stability, Postoperative pain scores(VAS), duration of sedation and adverse effects associated with each agent  Baseline, 10 minutes, 30 minutes, 60 minutes, at extubation, 30 minutes after extubation, 60 minutes after extubation, 90 minutes after extubation  
 
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)   01/07/2025 
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 - NO
Brief Summary   Controlled hypotension is crucial in spine surgeries to minimize blood loss and improve the surgical field, yet managing it in controlled hypertensive patients presents unique challenges. 
Remifentanil, an ultra-short-acting opioid, allows for rapid blood pressure control.However, it can cause bradycardia, respiratory depression, and lacks postoperative analgesia. Rebound hypertension is also a concern.
Dexmedetomidine, a selective alpha-2 agonist, offers sedation, analgesia-sparing effects, and hemodynamic stability by reducing sympathetic outflow.Studies suggest it can achieve controlled hypotension with potentially fewer bradycardic episodes and smoother recovery.However, its slower onset is a consideration.
While both agents are used for controlled hypotension, direct comparisons in controlled hypertensive patients undergoing spine surgery are limited. Hypertensive individuals may exhibit different responses due to altered hemodynamics . Understanding the optimal agent regarding intraoperative stability, postoperative outcomes, and side effects in this specific population is vital. This thesis aims to compare dexmedetomidine and remifentanil infusions for hypotensive anesthesia in controlled hypertensive patients undergoing spine surgeries, contributing evidence for informed clinical decision-making in this challenging context
 
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