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CTRI Number  CTRI/2020/09/027630 [Registered on: 07/09/2020] Trial Registered Prospectively
Last Modified On: 26/08/2020
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   A study to compare the effects of two different drugs(magnesium sulphate and dexmedetomidine) at reducing the blood pressure and heart rate during surgery for tumors of head and neck. 
Scientific Title of Study   Comparison of a single intravenous dose of magnesium sulphate or dexmedetomidine for attenuation of pressor response during selective neck dissection in head and neck malignancy:A double-blinded randomized interventional clinical trial 
Trial Acronym   
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr DIVYALAKSHMI S 
Designation  PG REGISTRAR 
Affiliation  Christian Medical College,Vellore 
Address  Department of Anaesthesia, Christian Medical College, IDA Scudder Road, Vellore-632004
No,133 liq Christian Medical College, IDA Scudder Road, Vellore-632004
Vellore
TAMIL NADU
632503
India 
Phone  7667756422  
Fax    
Email  divya231192@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr DIVYALAKSHMI S 
Designation  PG REGISTRAR 
Affiliation  Christian Medical College,Vellore 
Address  Department of Anaesthesia, Christian Medical College, IDA Scudder Road, Vellore-632004
No,133 liq Christian Medical College, IDA Scudder Road, Vellore-632004
Vellore
TAMIL NADU
632503
India 
Phone  7667756422  
Fax    
Email  divya231192@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Tony Thomson Chandy 
Designation  Professor and head of unit 1 
Affiliation  Christian Medical College,Vellore 
Address  Department of Anaesthesia, Christian Medical College, IDA Scudder Road, Vellore-632004

Vellore
TAMIL NADU
632503
India 
Phone  9500242412  
Fax    
Email  tonythomson@cmcvellore.ac.in  
 
Source of Monetary or Material Support  
Christian Medical College,IDAcScudder Road,Vellore-632004,Tamilnadu. 
 
Primary Sponsor  
Name  Christian Medical College 
Address  Christian Medical College, IDA Scudder Road,Vellore, Tamilnadu-632004 
Type of Sponsor  Research institution and hospital 
 
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 
Divyalakshmi S  Christian Medical College  Department of Anaesthesia, IDA Scudder Road,Vellore, Tamilnadu-632004
Vellore
TAMIL NADU 
7667756422

divya231192@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Ethics committee silver,Office of Research,carman block,christian medical college,vellore,tamilnadu  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: C148||Malignant neoplasm of overlappingsites of lip, oral cavity and pharynx,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  A bolus dose of Dexmedetomidine  A single dose of Dexmedetomidine 0.5mcg/kg,over 10 minutes,via infusion pump 
Intervention  Bolus dose of Magnesium sulphate  A single bolus dose of magnesium sulphate 30mg/kg,over 10 minutes  
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  All patients (ASA I and II) coming for selective neck dissection surgeries. 
 
ExclusionCriteria 
Details  1.Patient refusal
2.ASA III and IV ,
3.GFR <90ml/mt/1.73m2
4.Patients on beta blockers and calcium channel blockers.
5.Known allergy to study drug
6.BMI >30
7.Vascular free flap surgery 
 
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 effect of a bolus of either magnesium sulphate or
dexmedetomidine on the hemodynamic response to surgical incision. 
Every five minutes from the time of infusion bolus dose 
 
Secondary Outcome  
Outcome  TimePoints 
1) To compare the surgical field bleeding during neck dissection.
2) Comparison of duration of the attenuated pressor response..
3) Total intra-operative opioid requirements.
4) Additional medication required to attain normal pressures during neck dissection 
Calculated after the end of surgery. 
 
Target Sample Size   Total Sample Size="80"
Sample Size from India="80" 
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 3 
Date of First Enrollment (India)   25/09/2020 
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   nil 
Individual Participant Data (IPD) Sharing Statement

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

Response - NO
Brief Summary   Primary tumour excision and selective neck dissection is the mainstay of treatment of oral cancers. The head and neck region is highly innervated and vascular and surgical stimulus causes an acceleration of the heart rate and blood pressure, resulting in increased bleeding and decreased visibility of the surgical field. 
 Controlled hypotensive anaesthesia is an accepted method of providing a drier operative field, better visualization, more accurate dissection and reduced blood loss. Management of the intraoperative pressor response during surgical stimulus in head and neck surgeries continues to be a challenge. Inhalational anaesthetics combined with various intravenous agents are used to provide controlled hypotension during surgery. 
Various drugs have been used to reduce the pressor responses to noxious stimuli. Among these, the efficacy of dexmedetomidine, an α 2-adrenoreceptor agonist that reduces the heart rate and cardiac output, hence the blood pressure has been established. Magnesium Sulphate too reduces the blood pressure by inhibiting catecholamine release and arteriolar vasodilation. Studies comparing magnesium sulphate with dexmedetomidine shows conflicting conclusions of the advantage of one over the other. There are not many studies comparing the effect of these two drugs during selective neck dissection dissections. We would like to compare magnesium sulfate as a safe, effective and less expensive alternative to dexmedetomidine in our patient population undergoing head and neck surgery. Hence the need for this study.  
 
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