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CTRI Number  CTRI/2025/01/079738 [Registered on: 29/01/2025] Trial Registered Prospectively
Last Modified On: 28/01/2025
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cohort Study 
Study Design  Non-randomized, Active Controlled Trial 
Public Title of Study   Comparison Of Airway Predictor Parameter As A Predictor Of Difficult Laryngoscopy In Obese Vs NON-Obese 
Scientific Title of Study   Ratio Of Height To Thyromental Distance Vs Ratio Of Neck Circumference to Thyromental Distance as a Predictor of Difficult Laryngoscopy in Obese VS NON-OBESE -An Observational Comparative 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  SAURAV KUMAR 
Designation  JUNIOR RESIDENT 
Affiliation  AIIMS DEOGHAR 
Address  Department of Anaesthesiology and Critical Care,AIIMS DEOGHAR
AIIMS DEOGHAR
Deoghar
JHARKHAND
814152
India 
Phone  9241939504  
Fax    
Email  thesauravgupta@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr. Sanjay Kumar 
Designation  Additional professor 
Affiliation  AIIMS DEOGHAR 
Address  Department of Anaesthesiology and Critical Care, AIIMS DEOGHAR
AIIMS DEOGHAR
Deoghar
JHARKHAND
814152
India 
Phone  9241939504  
Fax    
Email  drsanjayaiims2012@gmail.com  
 
Details of Contact Person
Public Query
 
Name  SAURAV KUMAR 
Designation  JUNIOR RESIDENT 
Affiliation  AIIMS DEOGHAR 
Address  Department of Anaesthesiology and Critical Care,AIIMS DEOGHAR
AIIMS DEOGHAR

JHARKHAND
814152
India 
Phone  9241939504  
Fax    
Email  thesauravgupta@gmail.com  
 
Source of Monetary or Material Support  
Department of anaesthesiology and critical Care,AIIMS DEOGHAR, Deoghar, Jharkhand, India pincode-814152 
 
Primary Sponsor  
Name  AIIMS DEOGHAR 
Address  DEPARTMENT OF ANESTHESIOLOGY AND CRITICAL CARE, AIIMS Deoghar, Deoghar, jharkhand, INDIA pin-814152 
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 
SAURAV KUMAR  AIIMS DEOGHAR  PSE and OT Complex
Deoghar
JHARKHAND 
9241939504

thesauravgupta@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
IEC AIIMS DEOGHAR  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Healthy Human Volunteers  ASA 1 and 2 classified individuals 
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  nil  nil 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  BMI: 18.5- 40 kg/m2.
Elective surgeries.
ASA PS- I to II.
 
 
ExclusionCriteria 
Details  Patient’s refusal.
Patients with inadequate mouth. opening, edentulous.
Patient with external deformity in neck region.
Patient with cervical spine pathology.
Patient who will not require endotracheal intubation.
Pregnant patient.
• Patient with known case of airway disease.
• Patient requiring rapid sequence intubation.
• Patient with craniofacial deformity.
• ASA PS III 
 
Method of Generating Random Sequence   Stratified randomization 
Method of Concealment   Not Applicable 
Blinding/Masking   Not Applicable 
Primary Outcome  
Outcome  TimePoints 
To compare which one among RHTDM Vs NC/TMD is a better predictor of difficult laryngoscopy in obese vs non-obese  1.5 year 
 
Secondary Outcome  
Outcome  TimePoints 
To compare RHTDM with another parameter like BMI, NC, TMD & as a predictor of difficult laryngoscopy in obese & non-obese.  one & half year 
 
Target Sample Size   Total Sample Size="100"
Sample Size from India="100" 
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)   10/02/2025 
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 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  

Ratio of Height to Thyromental Distance vs Ratio of Neck Circumference to Thyromental Distance as a Predictor of Difficult Laryngoscopy in Obese vs Non-obese- A Prospective Observational Comparative Study with the primary objective To compare which one among RHTDM Vs NC/TMD is a better predictor of difficult laryngoscopy in obese vs non-obese and secondary objective to compare RHTDM with another parameter like BMI, NC, TMD and as a predictor of difficult laryngoscopy in obese and non-obese.

 
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