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CTRI Number  CTRI/2020/07/026325 [Registered on: 02/07/2020] Trial Registered Prospectively
Last Modified On: 24/06/2020
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Placebo Controlled Trial 
Public Title of Study   A study to evaluate the effect of dexmedetomidine on blood pressure and heart rate of patients during a surgical procedure where pins are drilled inside the skull while removing a part of it. 
Scientific Title of Study   The effect of dexmedetomidine vs placebo on haemodynamic response to skull pin insertion in patients undergoing craniotomy:a randomised blinded comparative study. 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Nandini Phukan 
Designation  Postgraduate trainee 
Affiliation  Gauhati Medical College and Hospital 
Address  Department of Anaesthesiology and Critical Care,Gauhati Medical College and Hospital,Bhangagarh,Guwahati,Kamrup
Bhangagarh,Guwahati,Kamrup,PIN 781032.
Kamrup
ASSAM
781032
India 
Phone  8876948508  
Fax    
Email  nandiniphukan91@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Faiza Ahmed Talukdar 
Designation  Prof and Head of Department 
Affiliation  Gauhati Medical College and Hospital 
Address  Department of Anaesthesiology and Critical Care,Gauhati Medical College and Hospital,Bhangagarh,Guwahati,Kamrup
Bhangagarh,Guwahati,Kamrup,PIN 781032.
Kamrup
ASSAM
781032
India 
Phone  9864031429  
Fax    
Email  faizaahmedtalukdar@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Nandini Phukan 
Designation  Postgraduate trainee 
Affiliation  Gauhati Medical College and Hospital 
Address  Department of Anaesthesiology and Critical Care,Gauhati Medical College and Hospital,Bhangagarh,Guwahati,Kamrup
Bhangagarh,Guwahati,Kamrup,PIN 781032.
Kamrup
ASSAM
781032
India 
Phone  8876948508  
Fax    
Email  nandiniphukan91@gmail.com  
 
Source of Monetary or Material Support  
Dr Nandini Phukan,Dept of Anaesthesiology,Gauhati Medical College and Hospital,Bhangagarh,Guwahati,Kamrup,Assam 
 
Primary Sponsor  
Name  Dr Nandini Phukan 
Address  Department of Anaesthesiology and Critical Care ,Gauhati Medical College and Hospital,Bhangagarh,Guwahati,Kamrup,Assam 
Type of Sponsor  Other [Self] 
 
Details of Secondary Sponsor  
Name  Address 
Dr Faiza Ahmed Talukdar  Professor and Head,Department of Anaesthesiology and Critical Care,Gauhati Medical College and Hospital,Bhangagarh,Guwahati 781032,Kamrup,Assam  
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
Dr Nandini Phukan  Neurosurgery Operation Theatre,Third floor,Dept of Neurosurgery,GMCH  Gauhati Medical College and Hospital,Bhangagrh,Guwahati 781032
Kamrup
ASSAM 
8876948508

nandiniphukan91@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Instituional Ethics Committee,Gauhati Medical College and Hospital.  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: R098||Other specified symptoms and signsinvolving the circulatory and respiratory systems,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  Dexmedetomidine Hydrochloride  Inj dexmedetomidine hydrochloride at the dose of 1microgram per kg bodyweight given intravenous using a syringe pump over 10 mins before induction of anaesthesia  
Comparator Agent  Placebo(Sodium chloride 0.9%)  Placebo(Inj Sodium chloride 0.9%),volume matched with the intervention agent given intravenous using a syringe pump over 10 mins before induction of anaesthesia. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  1.ASA I and II
2.Elective surgery
3.Pre operative GCS 15
4.Patients giving valid consent  
 
ExclusionCriteria 
Details  1.Pre operative heart rate less than 45
2.Pregnancy
3.Known allergy to dexmedetomidine
4.Second or third degree haeart block
 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Sequentially numbered, sealed, opaque envelopes 
Blinding/Masking   Participant, Investigator and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To determine the effect of iv inj dexmedetomidine in attenuating the haemodynamic response(SBP,DBP,MAP,HR) to skull pin holder application during craniotomy  At the time of pin insertion,1,5,10,15 mins after pin insertion 
 
Secondary Outcome  
Outcome  TimePoints 
To determine the effect of iv inj dexmedetomidine in attenuating the haemodynamic response(SBP,DBP,MAP,HR) during laryngoscopy and intubation
 
After giving drug or placebo,after intubation
 
To compare the plasma glucose level before and after pin insertion  15 mins before the administration of inj dexmedetomidine or placebo(baseline) and 30 and 60 mins after pin insertion 
 
Target Sample Size   Total Sample Size="82"
Sample Size from India="82" 
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)   20/07/2020 
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   It will be sent for publication in peer reviewed journal after study is complete.  
Individual Participant Data (IPD) Sharing Statement

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

Brief Summary   The Mayfield skull pin head holder is used to stabilise the head during neurosurgical procedures.When applied properly,the pins cause considerable periosteal stimulation which results in abrupt increase in Mean Arterial Pressure and  cerebral blood flow under general anaesthesia.The haemodynamic responses may lead to brain oedema,increase in ICP or ICH.(1)
 The stress response to a nociceptive stimulus is characterised by increased secretion of pituitary hormones and activation of sympathetic system.(1,2)
A number of anaesthetic techniques have been used to obtund the deleterious effects,among which dexmedetomidine is found to be superior.(3,4).Dexmedetomidine is a highly specific,potent and selective alpha 2 agonist.It has analgesic,sedative and anaesthesia sparing effects and it decreases the MAP,HR and sympathetic nervous system in dose dependent fashion.(1).
Altough dexmedetomodine is widely used in our setup,but its use in obtunding the above mentioned deleterious effects is not studied in our population yet.In this randomised controlled study,the null hypothesis that dexmedetomidine doesn’t reduce MAP and HR will be investigated.We will primarily try to compare the effect between iv inj dexmedetomidine given iv at the dose of 1microgram per kg bodyweight over 10 mins before induction of anaesthesia and placebo(inj sodium chloride0.9%) given iv over 10 mins before the induction of anaesthesia on attenuating the SBP,DBP,MAP and HR at the time of pin insertion,1,5,10,15mins after pin insertion .Secondarily we will try to see (a) the effect of inj dexmedetomodine in attenuating haemodynamic response(SBP,DBP,MAP and HR) during laryngoscopy and intubation (b) compare the plasma glucose level before and after pin insertion 
REFERENCES:
(1)Renganathan T,Venkatesan G.Comparative study to evaluate the effect of dexmedetomidine in attenuating the haemodynamic and neuroendocrine responses to skull pin holder application during craniotomy.J.Evid.Based Med.Heathc.2017;4(31):1814-1819.
(2)Desborough JP.The stress response to trauma and surgery.Br J Anaesthesia.2000 Jul;85:109-117
(3)Paul A,Krishna HM.Comparison between intravenous dexmedetomidine and local lignocaine infiltration to attenuate the haemodynamic response to skull pin head holder application during craniotomy.Indian J Anaesthesia.2015;59(12):785-788
(4)Thongrong C,Sirikannarat P,Kasemsiri P,Duangthongphon P.Comparison of dexmedetomidine and fentanyl to prevent haemodynamic response to skull pin application in neurosurgery:double blind randomized controlled trial.Anaesthesiology Intensive Therapy.2017;49(4):268-73
 
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