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CTRI Number  CTRI/2025/07/091948 [Registered on: 29/07/2025] Trial Registered Prospectively
Last Modified On: 27/07/2025
Post Graduate Thesis  No 
Type of Trial  Interventional 
Type of Study   Drug
Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Evaluation of ketamine as an adjuvant to scalp anesthesia for patients undergoing head surgery 
Scientific Title of Study   Evaluation of ketamine as an adjuvant to scalp block for patients undergoing craniotomy  
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 Amrita Roy 
Designation  DrNB Neuroanesthesia resident  
Affiliation  Institute of Neurosciences 
Address  Institute of Neurosciences 6B A.J.C Bose Road, Kolkata
6B A.J.C Bose Road, Kolkata
Kolkata
WEST BENGAL
700017
India 
Phone  8348641137  
Fax  -  
Email  royamrta@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Amrita Roy 
Designation  DrNB Neuroanesthesia resident  
Affiliation  Institute of Neurosciences 
Address  Institute of Neurosciences 6B A.J.C Bose Road, Kolkata
6B A.J.C Bose Road, Kolkata
Kolkata
WEST BENGAL
700017
India 
Phone  8348641137  
Fax  -  
Email  royamrta@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Amrita Roy 
Designation  DrNB Neuroanesthesia resident  
Affiliation  Institute of Neurosciences 
Address  INSTITUTE OF NEUROSCIENCES 6B A.J.C Bose Road, Kolkata
6B A.J.C Bose Road, Kolkata
Kolkata
WEST BENGAL
700017
India 
Phone  8348641137  
Fax  -  
Email  royamrta@gmail.com  
 
Source of Monetary or Material Support  
Institute of Neurosciences 6B A.J.C Bose Road, Kolkata - 700017, West Bengal, India 
 
Primary Sponsor  
Name  Institute of Neurosciences Kolkata 
Address  Institute of Neurosciences 6B A.J.C Bose Road, Kolkata - 700017, West Bengal, India 
Type of Sponsor  Private hospital/clinic 
 
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 Amrita Roy  INSTITUTE OF NEUROSCIENCES  6B A.J.C Bose Road, Kolkata Department of Neuroanesthesia Operation Theater 1 and 2
Kolkata
WEST BENGAL 
8348641137

royamrta@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee of the Institute of Neurosciences Kolkata (IEC-I-NK)   Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: G893||Neoplasm related pain (acute) (chronic),  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Bupivacaine 0.25% and lignocaine adrenaline (1:1)   Solution prepared by mixing bupivacaine 0.25% and lignocaine adrenaline (1:1) is given in scalp block in patients undergoing craniotomy 
Intervention  Ketamine  Ketamine as an adjuvant to the solution prepared by mixing bupivacaine 0.25% and lignocaine adrenaline (1:1) at a maximum dose of 1mg/kg, in scalp block for patients posted for craniotomy 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients posted for elective craniotomoy for supratentorial space occupying lesion, duration of surgery less than 4 hours, body mass index less than 24, ASA grade 1 or 2  
 
ExclusionCriteria 
Details  1. Patient refusal
2. ASA grade 3 or 4
3. Surgery for cerebral aneurysm or av malformation
4. Emergency surgery
5. Morbid obesity 
 
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 
Reduction in pain assessed by visual analog scale   Baseline, 2 hours,4 hours,8 hours,12 hours,24 hours (post operative) 
 
Secondary Outcome  
Outcome  TimePoints 
Total intraoperative opioid consumption, intraoperative mean arterial pressure & heart rate  Every 30 minutes till closure & at extubation  
 
Target Sample Size   Total Sample Size="62"
Sample Size from India="62" 
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)   18/08/2025 
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="0"
Months="11"
Days="30" 
Recruitment Status of Trial (Global)   Not Yet Recruiting 
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  

there are limited studies that have attempted to investigate the effect of ketamine in scalp nerve block with local anaesthetic on attenuation of haemodynamic response and postoperative analgesia in patients undergoing craniotomy. Therefore, the present double-blinded randomized clinical trial will be conducted to evaluate the efficacy of ketamine as an adjuvant to scalp nerve block for postoperative analgesia in patients undergoing elective craniotomy for supratentorial space occupying lesion, in a tertiary care hospital of Eastern India.

 
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