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CTRI Number  CTRI/2024/10/074551 [Registered on: 01/10/2024] Trial Registered Prospectively
Last Modified On: 07/11/2024
Post Graduate Thesis  Yes 
Type of Trial  Observational 
Type of Study   Cross Sectional Study 
Study Design  Single Arm Study 
Public Title of Study   A study to assess vertical height from thyroid to mentum for anticipating difficult laryngoscopy. 
Scientific Title of Study   Evaluation of reliability of thyromental height test as a predictor of difficult laryngoscopy:A prospective observational 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 Jatin Lal 
Designation  Professor 
Affiliation  Pt B D Sharma PGIMS, Rohtak 
Address  Dept. of Anaesthesiology, 2nd floor, Modular OT complex, Pt. B. D. Sharma PGIMS, Rohtak.

Rohtak
HARYANA
124001
India 
Phone  9728265511  
Fax    
Email  dr.jatinlal@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Jatin Lal 
Designation  Professor 
Affiliation  Pt B D Sharma PGIMS, Rohtak 
Address  Dept. of Anaesthesiology, 2nd floor, Modular OT complex, Pt. B. D. Sharma PGIMS, Rohtak.


HARYANA
124001
India 
Phone  9728265511  
Fax    
Email  dr.jatinlal@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Dharmender Ranga 
Designation  Junior Resident 
Affiliation  Pt B D Sharma PGIMS, Rohtak 
Address  Dept. of Anaesthesiology, 2nd floor, Modular OT complex, Pt. B. D. Sharma PGIMS, Rohtak.

Rohtak
HARYANA
124001
India 
Phone  9812129334  
Fax    
Email  dharmenderranga2@gmail.com  
 
Source of Monetary or Material Support  
Dept. of Anaesthesiology & Critical Care, Pt. B. D. Sharma PGIMS, Rohtak-124001, Haryana (India).  
 
Primary Sponsor  
Name  Department of Anaesthesiology and Critical Care  
Address  Pt. B. D. Sharma PGIMS, Rohtak 124001 Haryana 
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 Jatin Lal  Pt. B. D. Sharma PGIMS, Rohtak.  Dept. of Anaesthesiology & Critical Care, 2nd Floor, Modular OT Complex Rohtak
Rohtak
HARYANA 
9728265511

dr.jatinlal@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Biomedical Research Ethics Committee, PGIMS/UHS Rohtak  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 
Comparator Agent  NIL  NIL 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  65.00 Year(s)
Gender  Both 
Details  Patients having American Society Of Anesthesiologists physical classification I-II, scheduled for surgery under general anaesthesia requiring orotracheal intubation. 
 
ExclusionCriteria 
Details  Following patients will be excluded:
-Obvious abnormality of the airway requiring awake tracheal intubation.
-History of difficult intubation.
-Neck swelling or contractures.
-Restriction in mobility of mandible or neck.
-Unstable cervical spine.
-Interincisor distance less than 2.5 cm.
-BMI more than 35 kgm-2.
-Pregnant patients.
-History of radiotherapy for head and neck pathology.
-Need for rapid sequence intubation under cricoid pressure.
-Refusal to participate.
 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Not Applicable 
Blinding/Masking   Participant and Outcome Assessor Blinded 
Primary Outcome  
Outcome  TimePoints 
To evaluate predictive value of Thyromental Height Test in predicting difficult laryngoscopy as graded by Cormack Lehane grade.  At the time of Laryngoscopy. 
 
Secondary Outcome  
Outcome  TimePoints 
To evaluate predictive value of Thyromental Height Test in predicting difficult intubation as graded by Intubation Difficulty Scale.  At the time of endotracheal intubation 
 
Target Sample Size   Total Sample Size="175"
Sample Size from India="175" 
Final Enrollment numbers achieved (Total)= "175"
Final Enrollment numbers achieved (India)="175" 
Phase of Trial   N/A 
Date of First Enrollment (India)   04/10/2024 
Date of Study Completion (India) 01/04/2025 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="0"
Months="6"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Applicable 
Recruitment Status of Trial (India)  Completed 
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 present prospective, non-randomized double blind observational study will be conducted in the Department of Anaesthesiology and Critical care, Pt B. D. Sharma, PGIMS, Rohtak, in 175 adult patients (ASA I and II) of either sex aged 18-65 years, posted for surgery under general anaesthesia requiring endotracheal intubation. The aim of present study is to evaluate the reliability of Thyromental Height Test (TMHT) as a predictor of difficult laryngoscopy. The primary objective of the study is to evaluate predictive value of TMHT in predicting difficult laryngoscopy as graded by Cormack Lehane grade. The secondary objective is evaluate predictive value of TMHT in predicting difficult intubation as graded by Intubation Difficulty Scale.

 
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