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CTRI Number  CTRI/2026/02/103812 [Registered on: 13/02/2026] Trial Registered Prospectively
Last Modified On: 23/02/2026
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Surgical/Anesthesia 
Study Design  Randomized, Parallel Group Trial 
Public Title of Study   This is a study to test the efficacy of using methods to select the size of pLMA 
Scientific Title of Study   Efficacy of USG guided hyomental distance measurement vs classical weight based method for pLMA size selection in adult patients undergoing elective surgery : A randomized prospective study 
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 Vineet kumar 
Designation  Associate Proffessor 
Affiliation  Pt BD Sharma PGIMS Rohtak 
Address  Room 22,Second Floor,Department of Anaesthesia Modular OT Complex PGIMS Rohtak

Rohtak
HARYANA
124001
India 
Phone  9416904050  
Fax    
Email  vineetkumar.pgims@uhsr.ac.in  
 
Details of Contact Person
Scientific Query
 
Name  Dr Ramneesh  
Designation  Junior Resident 
Affiliation  Pt BD Sharma PGIMS Rohtak 
Address  Room 22,Second Floor,Department of Anaesthesia Modular OT Complex PGIMS Rohtak

Rohtak
HARYANA
124001
India 
Phone  9518693534  
Fax    
Email  ramneeshgrover04@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Ramneesh  
Designation  Junior Resident 
Affiliation  Pt BD Sharma PGIMS Rohtak 
Address  Room 22,Second Floor,Department of Anaesthesia Modular OT Complex PGIMS Rohtak

Rohtak
HARYANA
124001
India 
Phone  9518693534  
Fax    
Email  ramneeshgrover04@gmail.com  
 
Source of Monetary or Material Support  
Department of Anaesthesia Modular OT complex PT BD Sharma PGIMS Rohtak Haryana 124001 
 
Primary Sponsor  
Name  Department Of Anaesthesia 
Address  2nd Floor Modular OT complex PT BD Sharma PGIMS  
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 Ramneesh  Pt B. D. Sharma, PGIMS, Rohtak  Department of Anaesthesia, Modular OT complex, 2nd floor, room no. 22
Rohtak
HARYANA 
9518693534

Ramneeshgrover04@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Biomedical Research Ethics Committee  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: PCS||, (2) ICD-10 Condition: O||Medical and Surgical,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Classical weight based selection of pLMA  In this group size of pLMA will be selected according to standard classical weight based method.The procedure takes approximately 5-10 minutes per patient. 
Intervention  USG guided hyomental distance based selection of pLMA  In this group,the size ofpLMA will be selected based on USG guided measurement of Hyomental distance. Based on measured hyomental distance, size of pLMA will be chosen.The procedure takes approximately 5- 10 minutes per patient 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  70.00 Year(s)
Gender  Both 
Details  Age between 18 to 70 years old.
Either sex
American Society of Anesthesiologists (ASA) physical status I – II
Patients undergoing elective surgery under general anesthesia. 
 
ExclusionCriteria 
Details  Patiens with
Refusal to participate.
Weight less than 30kg or more than 75kg, pregnant women..
High risk of regurgitation or aspiration (large hiatal hernia, history of gastroesophageal
reflux disease (GERD), or uncontrolled diabetes mellitus).
Abnormal pharynx or anatomy
Anticipated difficult airway
Limited neck mobility
Coagulation disorder 
 
Method of Generating Random Sequence   Computer generated randomization 
Method of Concealment   Case Record Numbers 
Blinding/Masking   Double Blind Double Dummy 
Primary Outcome  
Outcome  TimePoints 
To compare the first attempt success rate of optimal pLMA placement between both the methods  Intraoperatively at the time of first pLMA insertion attempt immediately after induction of anaesthesia 
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate oropharyngeal leak pressure
To asses the ease of pLMA insertion
To document the incidence of pharyngolaryngeal morbidity 
Oropharyngeal leak pressure will be measured Intraoperatively immediately after pLMA insertion
Ease of pLMA insertion will be assessed Intraoperatively at the time of insertion
Pharyngolaryngeal morbidity will be assessed postoperatively within 24 hours after surgery 
 
Target Sample Size   Total Sample Size="60"
Sample Size from India="60" 
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   N/A 
Date of First Enrollment (India)   23/02/2026 
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)
Modification(s)  
Open to Recruitment 
Recruitment Status of Trial (India)  Open to Recruitment 
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   This Randomised Clinical trial aims to compare USG guided hyomental distance measurement with the conventional weight based method for selecting size of pLMA.Eligible patients will be randomised in two groups.The primary outcome will be successful device placement, and airway seal, while secondary outcomes will include ease of insertion, number of attempts and airway related complications. The study seeks to assess whether USG guided measurement offers an advantage over the traditional weight  based approach. 
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