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CTRI Number  CTRI/2025/10/095936 [Registered on: 13/10/2025] Trial Registered Prospectively
Last Modified On: 12/10/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Single Arm Study 
Public Title of Study   Impact of adult body weight on cricothyroid membrane depth measured by ultrasound  
Scientific Title of Study   Correlation of patient weight with depth of cricothyroid membrane using ultrasound in adults  
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 SWETA KUMARI  
Designation  PG Resident  
Affiliation  VMMC and Safdarjung Hospital  
Address  Department of anesthesia and intensive care, VMMC and Safdarjung hospital, Ansari nagar East, New Delhi

South
DELHI
110029
India 
Phone  8851902389  
Fax    
Email  swetagahlawat630@gmail.com  
 
Details of Contact Person
Scientific Query  
Name  Dr ANJALI KOCHHAR 
Designation  Associate Professor  
Affiliation  VMMC and Safdarjung Hospital  
Address  Department of anesthesia and intensive care, VMMC and Safdarjung hospital, Ansari nagar East, New Delhi

South
DELHI
110029
India 
Phone  9999197721  
Fax    
Email  dranjalikochhar@vmmc-sjh.nic.in  
 
Details of Contact Person
Public Query  
Name  Dr ANJALI KOCHHAR 
Designation  Associate Professor  
Affiliation  VMMC and Safdarjung Hospital  
Address  Department of anesthesia and intensive care, VMMC and Safdarjung hospital, Ansari nagar East, New Delhi

South
DELHI
110029
India 
Phone  9999197721  
Fax    
Email  dranjalikochhar@vmmc-sjh.nic.in  
 
Source of Monetary or Material Support  
VMMC and Safdarjung Hospital , Ansari nagar east New Delhi , India 110029 
 
Primary Sponsor  
Name  Vardhaman mahavir medical College and safdarjung hospital 
Address  Ansari nagar East, New Delhi, India 110029 
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 Sweta Kumari  Vardhaman mahavir medical College and safdarjung hospital  Department of anesthesia and intensive care Ansari nagar East New Delhi 110029 New Delhi
South
DELHI 		 8851902389

swetagahlawat630@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
VMMC AND SAFDARJUNG HOSPITAL INSTITUTIONAL ETHICS COMMITTEE  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 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients scheduled for elective surgeries  
 
ExclusionCriteria 
Details  1. Patients in whom front of neck and cricothroid membrane is not accessible.
2. Patients in whom accurate weight cannot be measured.
3. Patients with limited cervical spine mobility.
4. Pregnancy. 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To correlate patient weight with depth of cricothyroid membrane using ultrasound in adults   At baseline 
 
Secondary Outcome  
Outcome  TimePoints 
Correlation of the effect of other anthropometric parameters (age, gender, height & body mass index) of the patient with depth of cricothyroid membrane in adult patients as measured using ultrasound.


 		 At baseline  
Correlation of the effect of neck parameters (neck circumference, thyromental distance, ratio of neck circumference to thyromental distance) of the patient with depth of cricothyroid membrane in adult patients as measured using ultrasound.  At baseline  
 
Target Sample Size   Total Sample Size="75"
Sample Size from India="75" 
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)   23/10/2025 
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  

Airway management is critical in anaesthesia and emergencies, where accurate identification of the cricothyroid membrane (CTM) is vital for life-saving procedures. This study aims to evaluate the correlation between patient weight and CTM depth using ultrasound in adults, to improve the safety and accuracy of airway access, especially in obese or anatomically challenging patients.

 
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