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CTRI Number  CTRI/2025/10/096612 [Registered on: 29/10/2025] Trial Registered Prospectively
Last Modified On: 27/10/2025
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group, Active Controlled Trial 
Public Title of Study   Tongue width versus weight based method for size determination of laryngeal mask airway in children 
Scientific Title of Study   Tongue width versus weight based method for size determination of laryngeal mask airway in children Randomised Controlled Trial 
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 Sidharth D Nair 
Designation  Post graduate resident  
Affiliation  MOSC medical College 
Address  Department of Anaesthesiology and Critical Care MOSC medical college Kolenchery PO Ernakulam

Ernakulam
KERALA
682311
India 
Phone  7760736131  
Fax    
Email  dsidharthnair@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Sara Vergis 
Designation  HOD and Professor  
Affiliation  MOSC medical College 
Address  Department of Critical Care MOSC medical college Kolenchery PO Ernakulam

Ernakulam
KERALA
682311
India 
Phone  9446596066  
Fax    
Email  skorula@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Sara Vergis 
Designation  HOD and Professor  
Affiliation  MOSC medical College 
Address  Department of Critical Care MOSC medical college Kolenchery PO Ernakulam

Ernakulam
KERALA
682311
India 
Phone  9446596066  
Fax    
Email  skorula@gmail.com  
 
Source of Monetary or Material Support  
MOSC medical college Kolenchery PO Ernakulam 682311 
 
Primary Sponsor  
Name  Dr Sidharth D Nair 
Address  Department of anaesthesiology MOSC medical college Kolenchery PO Ernakulam 682311 
Type of Sponsor  Other [Self] 
 
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 Sidharth D Nair  MOSC medical college  Department of Anaesthesiology
Ernakulam
KERALA 
7760736131

dsidharthnair@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Commiittee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Size of LMA supreme based on weight of child  Patients requiring LMA supreme will be allotted the laryngeal mask airway based on the weight of the child for a duration till procedure is completed 
Intervention  Size of LMA supreme based on width of tongue   Patients requiring LMA supreme will be allotted the laryngeal mask airway based on the scale after measuring width of the tongue for a duration till procedure is completed 
 
Inclusion Criteria  
Age From  3.00 Year(s)
Age To  12.00 Year(s)
Gender  Both 
Details  Children between the ages 3 to 12 years of either gender for surgery under general anaesthesia with LMA
ASA category 1 and 2
Duration of surgery less than 2 hours
Adequate nil per oral duration  
 
ExclusionCriteria 
Details  High risk of regurgitation
Anticipated difficult airway
Weight more than 50 kilograms
Contraindication to insertion of LMA
Known allergies to drugs used in study  
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   An Open list of random numbers 
Blinding/Masking   Participant Blinded 
Primary Outcome  
Outcome  TimePoints 
1 To determine the size of LMA supreme by using tongue width vs weight based method in children
2 To determine the ease of insertion of LMA chosen by using tongue width vs weight based method in children  
Pre operatively and after induction till 15 minutes
After extubation till 30 minutes
 
 
Secondary Outcome  
Outcome  TimePoints 
1 To assess the hemodynamic response to insertion of LMA supreme
2 To assess post operative complication of insertion of LMA supreme  
Pre operatively till 15 minutes after intubation
After extubating for 30 minutes 
 
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 2/ Phase 3 
Date of First Enrollment (India)   30/11/2025 
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="6"
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  
The study aims to assess the difference in the size determined of a LMA and its ease of insertion by the weight based technique and tongue width based technique and see if the latter can be used as a tool of assessment of the same. Children within the age group of 3 to 12 years are included undergoing surgery under general anaesthesia lasting less than 2 hours and in whom there are no contraindications of LMA insertion or receiving GA
Patients will be evaluated prior to the procedure and the LMA provided is based depending on which group the patient is in. Children in group A shall receive LMA based on tongue width and those in group B on weight based. Once inside the operating room the patient is induced and LMA is inserted
We assess the time taken insert, number of attempts taken, change in size of LMA or ETT, adequacy of ventilation, adequacy of oxygenation and in the peri operative period look for hypoxemia, laryngospasm, bronchospasm, displacement of LMA and blood on cuff on removal. After extubation the child will be monitored for 30 minutes for any new complication. The above mentioned parameters will be noted all while maintaining safety of the patient.
 
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