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CTRI Number  CTRI/2025/09/095111 [Registered on: 19/09/2025] Trial Registered Prospectively
Last Modified On: 18/09/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Comparison of 2 drugs ( Ropivacaine and Bupivacaine) in spinal anaesthesia to evaluate effect on post operative urine retention in patients undergoing after surgery for Varicose veins 
Scientific Title of Study   Comparison of Equipotent Doses of Hyperbaric Ropivacaine and Bupivacaine in Spinal Anaesthesia to Evaluate Effect on Postoperative Urinary Retention in Patients Undergoing Endovenous Laser Ablation for Varicose Veins: A Randomised Double Blind 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 Udita Naithani  
Designation  Senior Professor  
Affiliation  Rabindranath Tagore Medical College  
Address  Dept of Anaesthesiology, Rabindranath Tagore Medical College, Udaipur, Rajasthan 313001 India

Udaipur
RAJASTHAN
313001
India 
Phone  9829414752  
Fax    
Email  uditanaithani@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Udita Naithani  
Designation  Senior Professor  
Affiliation  Rabindranath Tagore Medical College  
Address  Dept of Anaesthesiology, Rabindranath Tagore Medical College, Udaipur, Rajasthan 313001 India

Udaipur
RAJASTHAN
313001
India 
Phone  9829414752  
Fax    
Email  uditanaithani@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Mrinalini Yadav 
Designation  Pg Resident 
Affiliation  Rabindranath Tagore Medical College  
Address  Dept of Anaesthesiology, Rabindranath Tagore Medical College, Udaipur, Rajasthan 313001 India

Udaipur
RAJASTHAN
313001
India 
Phone  7726963735  
Fax    
Email  mrinaliniydv7139@gmail.com  
 
Source of Monetary or Material Support  
NIL 
 
Primary Sponsor  
Name  Rabindranath Tagore Medical College 
Address  Department of Anaesthesiology Rabindranath Tagore Medical College, Udaipur Rajasthan 313001 
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 Mrinalini Yadav  Rabindranath Tagore Medical College Udaipur   Cardio thoracic vascular surgery operation theatre at RNT Medical College Udaipur Rajasthan
Udaipur
RAJASTHAN 
7726963735

mrinaliniydv7139@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
IEC MEDICAL COLLEGE RESEARCHER AND CONTROLLER UDAIPUR   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: I832||Varicose veins of lower extremities with both ulcer and inflammation,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Hyperbaric Bupivacain  Hyperbaric Bupivacaine 0.5% (2.5ml) intrathecally in EVLA surgery  
Comparator Agent  Hyperbaric Ropivacaine   Hyperbaric Ropivacaine 0.75% (2.5ml) intrathecally in EVLA surgery  
Intervention  Ropivacaine vs Bupivacaine  Comparison of Equipotent doses of hyperbaric inj. Ropivacaine 0.75 percent 2.5 ml and inj. Bupivacaine 0.5 percent 2.5 ml in spinal anaesthesia to evaluate effect on post operative urinary retention in patients undergoing endovenous laser ablation for varicose veins: A Randomised double blind study  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Age 18-60 years of both sex American society of Anesthesiologists physical status I-II Height 150-175 centimetres Weight 40-90 kilograms  
 
ExclusionCriteria 
Details  Patient refusal
Patient with any contraindication to subarachnoid block like coagulopathies or anticoagulant medication, raised intracranial pressure, local injection site infection, severe stenotic valvular heart disease.
Patients having Pregnancy, neurological, psychiatric, renal calculus, prostatic disease, diabetes with autonomic neuropathy, urinary tract disease
Patients on beta blockers, alpha 2 agonists and diuretics therapy that may interfere with micturition
Any patients with hypertension, cardiac, renal, liver, endocrine, haematological or any coexisting systemic medical comorbidity
Obesity (body mass index more than 30kg per meter square ), opioid drug addiction
Patients who need to be catheterized preoperatively on table by surgeon in view of any coexisting illness, or risk of postoperative urinary retention
History of allergy to study drugs. 
 
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 
Time to void urine post spinal block measured in minutes  Time to void urine post spinal block measured in minutes 
 
Secondary Outcome  
Outcome  TimePoints 
Need for urinary catheterisation due to “inability to void urine 8 hours after the surgery despite having distended bladder or earlier if patient being uncomfortable due to POUR (
Complications due to POUR postoperatively such as abdominal pain, nausea. vomiting, hypotension /hypertension, bradycardia /tachycardia, arrhythmia and their treatment
Sensory and motor onset
Maximal level of sensory and motor block
Intraoperative haemodynamic profile
Intraoperative complications such as hypotension, bradycardia, nausea, vomiting, pruritus, shivering
Quality of anaesthesia by four grade scale regarding need of supplementation
Intraoperative and postoperative fluids given 
Upto 24 hours postoperatively 
 
Target Sample Size   Total Sample Size="66"
Sample Size from India="66" 
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)   25/10/2025 
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  

Our goal is to compare the clinical effectiveness and safety profile of equipotent doses of available commercial preparations of hyperbaric ropivacaine (0.75 percent) versus hyperbaric bupivacaine (0.5  percent ) using a fixed dose of 2.5ml in two groups for spinal anaesthesia in patients undergoing EVLA to compare effect on post operative urinary retention in terms of  time to void urine post spinal block 

 
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