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CTRI Number  CTRI/2018/12/016742 [Registered on: 19/12/2018] Trial Registered Prospectively
Last Modified On: 12/09/2022
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   Nalbuphine versus clonidine with hyperbaric bupivacaine for spinal anaesthesia 
Scientific Title of Study   Comparison of nalbuphine versus clonidine as an intrathecal adjuvant to hyperbaric bupivacaine in orthopedic lower limb surgeries 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Sujata Chaudhary 
Designation  Director Professor 
Affiliation  University College of Medical Sciences 
Address  Department of Anaesthesia and Critical Care,UCMS and GTB HOSPITAL,Dilshad Garden

North East
DELHI
110095
India 
Phone  9999051546  
Fax    
Email  sujatac462@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sujata Chaudhary 
Designation  Director Professor 
Affiliation  University College of Medical Sciences 
Address  Department of Anaesthesia and Critical Care,UCMS and GTB HOSPITAL,Dilshad Garden

North East
DELHI
110095
India 
Phone  9999051546  
Fax    
Email  sujatac462@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Heena Agrawal 
Designation  Post Graduate 1st year 
Affiliation  University College of Medical Sciences 
Address  Department of Anaesthesia and Critical Care,UCMS and GTB HOSPITAL,Dilshad Garden

North East
DELHI
110095
India 
Phone  8826613093  
Fax    
Email  dr.heenaagrawal93@gmail.com  
 
Source of Monetary or Material Support  
University College of Medical Sciences and Guru Teg Bahadur Hospital, Dilshad Garden , Delhi 
 
Primary Sponsor  
Name  University College of Medical Sciences and Guru Teg Bahadur Hospital 
Address  Dilshad Garden New Delhi 
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 Heena Agrawal  Department of Ananesthesia and Critical Care, UCMS and GTB HOSPITAL  Dilshad Garden
North East
DELHI 
8826613093

dr.heenaagrawal93@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee- Human Research (IEC-HR)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: S899||Unspecified injury of lower leg,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Clonidine group  Patients in this group will receive single shot of 15 mg of 0.5% of hyperbaric bupivacaine(3.0ml)with 30mcg of clonidine(0.5ml) before the surgery through spinal anaesthesia  
Intervention  Control group  Patients in this group will receive single shot 15 mg of 0.5% of hyperbaric bupivacaine(3.0ml)with 0.9% of normal saline(0.5ml) before the surgery through spinal anaesthesia  
Comparator Agent  Nalbuphine group   Patients in this group will receive single shot of 15 mg of 0.5% of hyperbaric bupivacaine(3.0ml)with 1mg of nalbuphine(0.5ml) before the surgery through spinal anaesthesia  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Patients belonging to ASA grade I and II who are undergoing orthopedic lower limb surgery with height of >150cm and <180cm.  
 
ExclusionCriteria 
Details  1.Patients with known allergy to drugs involved in the study.
2.Patients with contraindications to central neuraxial block like patients with coagulations abnormalities, increased intracranial pressure, local sepsis in spinal lumbar region.
3.Patients with weight>120kg.
4.Patient with history of chronic pain or long term opioid use.
5.Patient refusal.
6.Multiple fractures precluding assessment of anaesthesia.
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Participant and Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
The duration of analgesia following intrathecal test drug solution administration  0,2,4,8,10,15,20 and 30 minutes following drug administration and then every 15 minutes during intra operative period and every 30 minutes dring 2 hours of post operative period  
 
Secondary Outcome  
Outcome  TimePoints 
1.Time of onset, maximum level, time to achieve maximum level and duration of sensory block
2.Time of onset, intensity and duration of motor block
3.Postoperative pain assessment (VAS) and total analgesic requirement in first 24 hours
 
0,2,4,8,10,15,20 and 30 minutes following drug administration and then every 15 minutes during intra operative period and every 30 minutes dring 2 hours of post operative period and then at 4th,8th,12th hour and 24 hours respectively 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
Final Enrollment numbers achieved (Total)= "63"
Final Enrollment numbers achieved (India)="63" 
Phase of Trial   N/A 
Date of First Enrollment (India)   30/12/2018 
Date of Study Completion (India) 30/04/2020 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   Not Published 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Brief Summary
Modification(s)  

Rationale: Lower limb fracture is the commonest orthopedic trauma requiring surgery. Spinal anesthesia is the preferred choice for orthopedic lower limb surgeries. Due to its limited duration of block, intrathecal adjuvants are often used to prolong the duration of anesthesia. Opioids are commonly used intrathecal adjuvant but, are also associated with side effects like hypotension, bradycardia, pruritis etc. Recently, nalbuphine has been safely used as intrathecal adjuvant and found to be promising without additional side effects. Intrathecal clonidine is known to prolong analgesia and quality of subarachanoid block. Few studies have compared nalbuphine with clonidine but the results reported are inconsistent.

Aim: Comparison of nalbuphine versus clonidine as intrathecal adjuvant to hyperbaric bupivacaine in orthopedic lower limb surgeries.

Objectives: To compare the effect of nalbuphine versus clonidine as intrathecal adjuvant to bupivacaine and study its effect on:

Primary objective:

 To know the duration of post operative analgesia

Secondary objectives:

1.      Sensory block: highest level and duration of block

2.      Motor block: Onset, intensity and duration of block

3.      Adverse effects

Setting: The study will be conducted in Department of Anesthesiology and Critical Care, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi.

Study Design: Randomized double blind controlled study.

Duration: November 2018 to April 2020

Population/participants: Patients belonging to ASA I and ASA II, between the age of 18-60 years and height of >150cm and <180cm will be included in the study.

Sample Size: Considering the variability of 6.04 minutes, 30.76 minutes and 5.85 minutes in duration of analgesia with nalbuphine 0.8mg, clonidine 15mcg and control respectively from previous studies.9, 12 Now to estimate a difference of 50 minutes among these drugs at α=5% and Power=90%, a  sample size of 10 patients is required in each group. Due to availability of resources and time, we propose to consider 21 patients in each group. 63 patients will be divided into three groups of 21 each using a computer generated random number table.

Methods: Under all aseptic precautions subarachanoid block will be performed and patients will receive 3.5 ml of test drug solution containing 15mg of bupivacaine along with either 1mg of nalbuphine or 30mcg of clonidine or 0.9% of normal saline according to the groups allocated. The test drug solution will be prepared by anesthesiologist not involved in the study. Patients will be assessed for characteristics of spinal anesthesia (sensory and motor block), sedation score, hemodynamic parameters, pain score and side effects.

Statistical Analysis: Between the 3 groups comparison will be done by one way ANOVA followed by TUKEY’s test. Hemodynamic parameters will be compared by repeated measure ANOVA and followed by DUNNETT’s test.

Qualitative parameters will be compared using Chi-square test/Fischer’s exact test.

A p-value of <0.05 will be considered significant.

 
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