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CTRI Number  CTRI/2025/06/089076 [Registered on: 18/06/2025] Trial Registered Prospectively
Last Modified On: 17/06/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   Comparison Of A Drug Dexmedetomidine by Two Different Route Intravenous or Intrathecal With Ropivacaine Heavy in Spinal Block for Lower Limb Orthopaedic Surgery 
Scientific Title of Study   Intravenous Versus Intrathecal Dexmedetomidine As an Adjuvant to 0.75% Hyperbaric Ropivacaine in Spinal Anaesthesia for Lower Limb Orthopaedic Surgery -A Randomized Double Blind 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 Sandeep Sharma 
Designation  Professor 
Affiliation  R.N.T Medical College 
Address  Department of Anaesthesia, R.N.T Medical College, Udaipur, Rajasthan 313001 India

Udaipur
RAJASTHAN
313001
India 
Phone  09214323557  
Fax    
Email  sharma0979@yahoo.co.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sandeep Sharma 
Designation  Professor 
Affiliation  R.N.T Medical College 
Address  Department of Anaesthesia, R.N.T Medical College, Udaipur, Rajasthan 313001 India

Udaipur
RAJASTHAN
313001
India 
Phone  09214323557  
Fax    
Email  sharma0979@yahoo.co.in  
 
Details of Contact Person
Public Query
 
Name  Dr Anuradha Vyas 
Designation  PG Resident 
Affiliation  R.N.T Medical College 
Address  Department of Anaesthesia, R.N.T Medical College, Udaipur, Rajasthan 313001 India

Udaipur
RAJASTHAN
313001
India 
Phone  09468608278  
Fax    
Email  anuradhavyas03@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesia R.N.T Medical College, Udaipur 313001 Rajasthan, India 
 
Primary Sponsor  
Name  Maharana Bhupal Government Hospital 
Address  Department of Anaesthesia, R.N.T Medical College, Udaipur Rajasthan 313001 India 
Type of Sponsor  Government 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 Anuradha Vyas  Maharana Bhupal Government Hospital  2nd Floor Main OT Orthopaedic Trauma Centre Building, Main Orthopaedic OT, R.N.T Medical College, Udaipur, Rajasthan 313001 India
Udaipur
RAJASTHAN 
9468608278

anuradhavyas03@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
R.N.T. MEDICAL COLLEGE AND CONTROLLER AND ATTACHED HOSPITALS, UDAIPUR  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: S724||Fracture of lower end of femur, (2) ICD-10 Condition: S821||Fracture of upper end of tibia, (3) ICD-10 Condition: S822||Fracture of shaft of tibia, (4) ICD-10 Condition: S823||Fracture of lower end of tibia, (5) ICD-10 Condition: S723||Fracture of shaft of femur,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Intrathecal Hyperbaric Ropivacaine and Intravenous Dexmedetomidine  Duration of analgesia is evaluate in Hyperbaric Ropivacaine 0.75 percentage (18.75mg) and Intravenous Dexmedetomidine 0.5 mcg per kg in 100ml NS over 15min 
Comparator Agent  Intrathecal Hyperbaric Ropivacaine with Dexmedetomidine  Duration of analgesia is evaluate in Hyperbaric Ropivacaine 0.75 percentage (18.75mg) with 5 mcg Dexmedetomidine 
Intervention  Spinal Anaesthesia  Duration of Analgesia is compared between Hyperbaric Ropivacaine 0.75 percentage(18.75mg)with intrathecal (5mcg) or intravenous (5mcg per kg) Dexmedetomidine in spinal anaesthesia 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Patient with ASA physical status Grade I and II
Patient undergoing elective surgery under spinal anaesthesia
Patient with Mallampati Class I and II 
 
ExclusionCriteria 
Details  Pregnant patients.
Patients having coagulation abnormalities, platelet count less than 75000, INR more than 1.5, or on
anticoagulants.
Patients having systemic illness (severe hypovolemia, raised intracranial pressure,
neuromuscular diseases, ischemic, valvular,congenital heart diseases, psychiatric,
hematological disorder).
Patients having any absolute contraindications for spinal anesthesia.
Patient refusal to participate in study.
Any allergy to study drugs or local anaesthetic drugs.
Short stature (height less then 150cms)
Patients with spinal deformity.
Patients with BMI more than 30. 
 
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 
Evaluate and Compare the Duration of Analgesia.
 
0 min,15min,30min,60min,2 hour,3 hour,4 hour,5 hour,6 hour,7 hour,8 hour,12 hour,16 hour,20 hour,24 hour
 
 
Secondary Outcome  
Outcome  TimePoints 
Onset and duration of sensory block
Onset and duration of motor block
Peak sensory level achieved
Time to reach peak sensory level
Maximum Bromage score achieved
Consumption of rescue analgesic drug in 24 hours post operatively
Sedation Score
Haemodynamic parameters
Adverse effects, if any 
0 min,15min,30min,60min,2 hour,3 hour,4 hour,5 hour,6 hour,7 hour,8 hour,12 hour,16 hour,20 hour,24 hour
 
 
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)   30/06/2025 
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="1"
Months="0"
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   The aim of the study will be to evaluate and compare the effect of intravenous versus intrathecal dexmedetomidine as an adjuvant to hyperbaric 0.75% ropivacaine in spinal anaesthesia for lower limb orthopaedic surgery with
Primary objective - to evaluate and compare the duration of analgesia 
Secondary objectives- to evaluate and compare onset and duration of sensory and motor block, peak sensory level achieved, time to reach peak sensory level, maximum bromage score achieved, consumption of rescue analgesic drug in 24 hours post operatively, sedation score, haemodynamic parameters, adverse effects,if any.

This study will be conducted in patient who will fulfill the inclusion criteria will be enrolled in the study. They will be randomly into two equal groups of 30 patients in each group.

Group IV - Subarachnoid block with 0.75% of hyperbaric ropivacaine 2.5ml (18.75 mg) + normal saline 0.1ml and IV infusion of 0.5mcg per kg dexmedetomidine in 100ml NS over 15 min
Group IT - Subarachnoid block with 0.75% of hyperbaric ropivacaine 2.5ml (18.75 mg) + 5mcg dexmedetomidine and IV infusion of 100ml NS over 15 min

 
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